Datasets:

maxwellinked
/

time-lapse-artifacts

@@ -1,64 +1,13 @@
 # Changelog
-## Unreleased — semantic documentation clarification
-- Corrected fifteen creator-confirmed June 18–30, 2026 30 × 40 in records from
-  `Paper` to `IllustrationBoard` in their paths and metadata. The LFS pointers,
-  payload SHA-256 values, stable `record_id` values, Xet identities, byte sizes,
-  technical fields, and `Rec01`–`Rec15` order are unchanged.
-- Normalized five Pre-Standard `time = 00:00` values to unknown because their
-  incomplete dates do not establish documented midnight; the historical paths
-  retain literal `0000` and `notes` explain the distinction.
-- Restored `Brush;FountainPen`, `Ink`, and `WatercolorPaper` for one
-  Pre-Standard row from explicit filename tokens without inferring positional
-  tool/medium pairs. One separate row still lacks support evidence and now says
-  so explicitly in `notes`.
-- Aligned the Pre-Standard tool/medium rule with the canonical contract:
-  observed lists are independent and token position does not establish pairs.
-- Documented that `date` and `time` preserve finish labels whose recording,
-  session, sequence, or work scope is not normalized in the current schema.
-- Clarified that dated fragment sidecars cover reviewed ingestions rather than
-  every historical `RecNN` row, and that absence does not negate a relationship.
-- Relabeled the 404-row Viewer state as a pinned historical snapshot, explained
-  the CSV `file_name` to loaded `video` feature mapping, and replaced broad
-  raw/master/audio wording with the verified 485-of-616 stream-presence count.
-- No media payload, active metadata row, record identity, or relationship
-  assertion was added or removed; the fifteen path corrections preserve media
-  identity.
-## Unreleased — September 1 complete fragment-sequence ingestion
-- Added 13 creator-confirmed, unchanged canonical Framelapse source fragments
-  totaling 5,109,481,466 bytes and 983.556669 seconds of encoded playback.
-- Preserved two complete source-recording sequences as ordered `RecNN` sets
-  containing 4 and 9 canonical fragments.
-- Increased active membership to 488 Standard plus 128 Pre-Standard records,
-  or 616 total, without changing the 29-field schema or
-  `standard-2025-07-13` protocol ID.
-- Added a separate 13-row, 15-field dated relationship sidecar containing only
-  canonical fragments; no concatenated or transcoded derivative was added.
-- Left `original_filename` blank because, at ingest-audit time, the source
-  files bore canonical archive names and no pre-rename device-name mapping was
-  independently retained.
-- Verified 13/13 local SHA-256 values and complete packet-stream demuxes, plus
-  39/39 decoded start/middle/end frame samples. The literal container tag
-  `com.android.capture.fps=5.000000` is retained without inferring real drawing
-  time.
-- Bound the 13 media objects at immutable media-only PR revision
-  `e2094ae582c057df9d40e9bfe4dc00afed0bad2a`; the relationship sidecar pins
-  metadata-bearing revision `fe66d1dbb117486c2046376423316fd2cc25d488`.
-- Retained media-object-level `record_id` identity. This update does not add a
-  global `work_id`, backfill historical rows, create a v3 release, or otherwise
-  bump the dataset version.
-## Unreleased — August 31 complete fragment-sequence ingestion
 - Added 32 creator-confirmed, unchanged canonical Framelapse source fragments
-  totaling 9,071,159,472 bytes and 1,762.815248 seconds of encoded playback.
-- Preserved four complete source-recording sequences as ordered `RecNN` sets
-  containing 8, 6, 7, and 11 canonical fragments.
-- Increased active membership to 475 Standard plus 128 Pre-Standard records,
-  or 603 total, without changing the 29-field schema or
   `standard-2025-07-13` protocol ID.
 - Added a separate 32-row, 15-field dated relationship sidecar containing only
   canonical fragments; no concatenated or transcoded derivative was added.
@@ -70,373 +19,449 @@
   `com.android.capture.fps=5.000000` is retained without inferring real drawing
   time.
 - Bound the 32 media objects at immutable media-only PR revision
-  `a05e2fe9d485435f8c3d0adbfe4aa80d289e9867`; the relationship sidecar pins
-  metadata-bearing revision `480bc7e24261e6d3bbcacd261a00782b7e40211a`.
-- Retained media-object-level `record_id` identity. This update does not add a
-  global `work_id`, backfill historical rows, create a v3 release, or otherwise
-  bump the dataset version.
-## Unreleased — August 29–30 complete fragment-sequence ingestion
-- Added 39 creator-confirmed, unchanged canonical Framelapse source fragments
-  totaling 17,470,306,160 bytes and 3,403.665326 seconds of encoded playback.
-- Preserved five complete source-recording sequences as ordered `RecNN` sets
-  containing 9, 5, 4, 15, and 6 canonical fragments.
-- Increased active membership to 443 Standard plus 128 Pre-Standard records,
-  or 571 total, without changing the 29-field schema or
-  `standard-2025-07-13` protocol ID.
-- Added a separate 39-row, 15-field dated relationship sidecar containing only
-  canonical fragments; no concatenated or transcoded derivative was added.
-- Left `original_filename` blank because, at ingest-audit time, the source
-  files bore canonical archive names and no pre-rename device-name mapping was
-  independently retained.
-- Verified 39/39 local SHA-256 values and complete packet-stream demuxes, plus
-  117/117 decoded start/middle/end frame samples. The literal container tag
-  `com.android.capture.fps=5.000000` is retained without inferring real drawing
-  time.
-- Bound the 39 media objects at immutable media-only PR revision
-  `b7ac091a06917eb712a4493dbb763e751c2bf459`; the relationship sidecar pins
-  metadata-bearing revision `7293edccff883b4c604d710addbf26c85910cfcc`.
-- Retained media-object-level `record_id` identity. This update does not add a
-  global `work_id`, backfill historical rows, create a v3 release, or otherwise
-  bump the dataset version.
-## Unreleased — canonical tool-token and timing clarification
-- Corrected five active Standard paths whose tool tokens contradicted their
-  metadata: three `BallpoinPen` typos, one split `Ballpoint.Pen` token, and one
-  split `Fountain.Pen` token.
-- Retained every existing `record_id`, media payload, Xet identity, byte size,
-  and technical metadata. This is a server-side path normalization, not a
-  re-encoding or new recording.
-- Added validation requiring each declared Standard tool to appear as an
-  exact, case-sensitive filename token. Tool and medium lists remain
-  independent; no positional pairing is inferred.
-- Left revision-pinned historical relationship sidecars unchanged because
-  their earlier paths remain correct evidence at their declared revisions.
-- Clarified that 0.2 seconds is the Standard protocol's nominal capture
-  setting, not a confirmed per-record measurement or calibrated real-time
-  basis.
-## Unreleased — verification and documentation consolidation
-- Clarified that each active metadata row represents one published video
-  object, not necessarily one drawing, session, or complete process.
-- Kept documented fragment-sequence and physical-reference relationships in
-  separate sidecars without adding a global `work_id` or changing either
-  29-field active video index.
-- Replaced batch-by-batch README narration and stale Viewer migration counts
-  with current, revision-bound summaries; added a provenance navigation index
-  for the nine documented fragment sequences.
-- Corrected nine physical-reference `hash_state` values that claimed paired
-  hashes despite blank paired filename/hash fields. The correction reports
-  ledger availability only and does not reinterpret any photograph or owner
-  evidence.
-- Added a dedicated physical-reference validator and regression tests; fragment
-  validation now checks canonical byte sizes and states whether a pinned remote
-  inventory was supplied.
-- Removed the unsupported `video-classification` task facet while retaining
-  `feature-extraction` and `annotations_creators: expert-generated`.
-- This consolidation does not alter media, active video-index rows, record
-  identities, or acquisition-protocol identifiers.
-## Unreleased — August 7, 2025 date correction
-- Corrected creator-confirmed record `tla-c043b4f55b583c4e` from August 7,
-  2026 to August 7, 2025 in both its canonical path and metadata date.
-- Retained the unchanged 86,415,894-byte media payload, stable `record_id`,
-  Xet identity, technical metadata, collection membership, and 23:06 time.
-- This is a descriptive date correction, not a new recording, re-encoding, or
-  change to the `standard-2025-07-13` acquisition protocol boundary.
-## Unreleased — August 28–29 complete fragment-sequence ingestion
-- Added 19 creator-confirmed, unchanged canonical Framelapse source fragments
-  totaling 10,661,404,849 bytes and 2,089.745536 seconds of encoded playback.
-- Preserved four complete drawing sequences as ordered `RecNN` sets containing
-  10, 4, 2, and 3 canonical fragments.
-- Increased active membership to 404 Standard plus 128 Pre-Standard records,
-  or 532 total, without changing the 29-field schema or
-  `standard-2025-07-13` protocol ID.
-- Added a separate 19-row, 15-field dated relationship sidecar containing only
-  canonical fragments; no concatenated or transcoded derivative was added.
-- Left `original_filename` blank because, at ingest-audit time, the source
-  files bore canonical archive names and no pre-rename device-name mapping was
-  independently retained.
-- Verified 19/19 local SHA-256 values and complete packet-stream demuxes, plus
-  57/57 decoded start/middle/end frame samples. The literal container tag
-  `com.android.capture.fps=5.000000` is retained without inferring real drawing
-  time.
-- Bound the 19 media objects at immutable media-only PR revision
-  `0c421b555a2558887b65b0b25380b35c642fa7e1`; the final relationship sidecar
-  pins metadata-bearing revision `429541ae7f93c869056df956873f3441d580914c`.
 - Retained media-object-level `record_id` identity. This update does not add a
   global `work_id`, backfill historical rows, create a v3 release, or otherwise
   bump the dataset version.
-## Unreleased — August 24–27 complete fragment-sequence ingestion
-- Added 22 creator-confirmed, unchanged canonical Framelapse source fragments
-  totaling 17,389,875,055 bytes and 3,391.699091 seconds of encoded playback.
-- Preserved five complete drawing sequences as ordered `RecNN` sets containing
-  2, 2, 6, 2, and 10 canonical fragments.
-- Increased active membership to 385 Standard plus 128 Pre-Standard records,
-  or 513 total, without changing the 29-field schema or
-  `standard-2025-07-13` protocol ID.
-- Added a separate 27-row, 15-field dated relationship sidecar covering the 22
-  canonical fragments and five unchanged noncanonical InShot derivatives.
-- Stored the five derivatives under the nested provenance `InShot/` directory;
-  they remain outside both active metadata indexes, Viewer configurations, and
-  active byte and duration totals.
-- Retained media-object-level `record_id` identity. This update does not add a
-  global `work_id`, backfill historical rows, create a v3 release, or otherwise
-  bump the dataset version.
-- Verified the 27 planned media additions, with no deletion or changed existing
-  path, at immutable media-only PR revision
-  `bb4160045cae21a71bf360278549398dc9d2a028`.
-- Verified all 27 relationship paths, SHA-256 values, byte sizes, Xet
-  identities, canonical metadata joins, and exact root metadata bytes against
-  immutable metadata-bearing PR revision
-  `8a21015210c19936d3b18175ae3f4061ae1e5d8d`. This validation does not assert
-  Viewer settlement or merge status.
-## Unreleased — June 2026 recording-sequence filename correction
-- Corrected the canonical paths of 15 existing 30 × 40 in recordings dated
-  June 18–30, 2026, to preserve the creator-confirmed continuous filename
-  sequence `Rec01` through `Rec15`.
-- Retained every media payload, stable `record_id`, Xet identity, byte size,
-  technical field, and membership count; this is a filename correction, not a
-  media addition or re-encoding.
-- Clarified that documented `RecNN` order may continue across finish dates and
-  does not reset merely because the date changes.
-- The suffixes document recording order only; they do not by themselves assert
-  separate drawings, sessions, or completion states.
-## Unreleased — August 22–23 recording-sequence ingestion
-- Added three creator-verified Standard recordings dated August 22–23, 2026,
-  totaling 51,022,796,325 bytes and 3,895.390997 seconds of encoded playback.
-- Increased active membership to 363 Standard plus 128 Pre-Standard records
-  without changing the 29-field schema or `standard-2025-07-13` protocol ID.
-- Retained literal `Rec01` through `Rec03` filename suffixes for the continuing
-  14 × 17 in sequence; the suffixes do not independently claim an endpoint.
-- Verified direct visual continuity and drawing progression across all three
-  recordings; integrity validation covers every complete video and audio stream.
-- Documented the creator-confirmed Rec03 ink change at approximately `00:04:59`:
-  Pelikan black before the visible refill handling and unmarked, unknown-brand
-  black ink afterward. No replacement brand is inferred.
-- Rec03 produced one end-of-stream non-monotonic DTS warning from FFmpeg's null
-  output during combined-stream validation. Source packet and decoded-frame
-  timestamps at the tail remained strictly increasing, and both streams decoded.
-## Unreleased — August 2026 Standard ingestion
-- Added three creator-verified Standard recordings dated August 17–19, 2026,
-  totaling 50,478,909,746 bytes and 3,856.391997 seconds of encoded playback.
-- Increased active membership to 360 Standard plus 128 Pre-Standard records
-  without changing the 29-field schema or `standard-2025-07-13` protocol ID.
-- Fully decoded all 231,383 video frames and every audio stream; no source
-  corruption, dropped frames, duplicated frames, or broken endpoints were
-  found.
-- Added the first 14 × 17 in Standard record and documented its Strathmore 500
-  Series Premium Bristol plate surface from the creator-supplied packaging.
-- Retained `Rec01` on the 14 × 17 in filename because `Rec02` is expected; the
-  suffix distinguishes recording sequence only.
-- Applied media integrity, identity, rights, and traceable-metadata criteria
-  without filtering by perceived artistic quality.
-## Unreleased — July 13 tier promotion
-- Promoted `tla-3f49a8917fe22676` from Pre-Standard to Standard after the
-  creator confirmed that clean media integrity is the controlling membership
-  criterion.
-- Verified all 1,205 video frames and the audio stream decode successfully.
-  The shortened clip begins mid-process and reaches a completed, signed
-  endpoint without corruption or a broken ending.
-- Preserved the 141,221,810-byte media payload, Xet identity, stable record ID,
-  and the 485-record active total while relocating its repository path.
-- Moved the documented protocol boundary coherently to
-  `standard-2025-07-13` across the canonical index.
-- Updated active membership to 357 Standard plus 128 Pre-Standard records
-  without changing the 29-field schema.
-## Unreleased — Standard ingestion
-### Membership and evidence policy
-- Added 17 creator-verified Standard records totaling 9,289,459,921 bytes and
-  1,071.199 seconds of encoded playback.
-- Increased active membership to 356 Standard plus 129 Pre-Standard records.
-- Applied technical integrity, identity, rights, and traceable-metadata
-  criteria without filtering records by perceived artistic quality or degree
-  of completion.
-- Preserved the existing 29-field schema and separate
-  `canonical/archive` and `pre_standard/archive` configurations.
-### Qualified media conditions
-- Documented two shortened derivatives as active Standard representatives
-  without describing them as full-duration capture masters.
-- Recorded pronounced lighting variation for the 2026-01-11 record.
-- Retained one non-monotonic duplicate video-timestamp warning for each of the
-  2026-01-11 and 2026-02-08 records; both files decode completely.
-- Corrected the publication path `2025-09.27...` to canonical date syntax
-  `2025-09-27...` without altering the local source file.
-## Post-v0.3 — March/April provenance correction
-### Record identity and physical metadata
-- Promoted historical `2026.03.04(214.0).mp4` from the unresolved provenance
-  subtree as the true `2026-03-04 14:21` BallpointPen / Ink / Paper / 9x12
-  Standard record. Its 6,587,685,497-byte payload receives a new stable record
-  ID based on its former archival path.
-- Corrected the distinct 496,296,535-byte object formerly occupying that path
-  to `2026-04-04 16:49` after curator verification against the physical work.
-  Its existing stable record ID remains attached to the same media object.
-- Increased active membership to 339 Standard plus 129 Pre-Standard records;
-  no video bytes were added to repository storage.
-- Preserved the immutable `v0.3.0` tag at its original 467-record commit.
-### Media payload
-- Moved both existing Hub objects server-side without transcoding, replacing,
-  downloading in full, or uploading video bytes.
-- Removed the resolved `Unresolved_Series_9x12/2026.03.04(214.0).mp4` path only
-  after preserving that same object at its corrected canonical path.
-- No audio stream was modified.
-## v0.3.0 — Release candidate
-### Metadata contract
-- Corrected record `tla-a6bd9380e0256aff` from an unknown finish time to the
-  curator-confirmed `2025-09-06 13:46` while retaining the confirmed 12x9
-  physical dimensions.
-- Linked historical `2025.11.15(116.1).mp4` to that record after curator
-  confirmation that it depicts the same physical drawing and near-duplicate
-  video content. The files have distinct byte sizes, SHA-256 values, and Xet
-  identities, so the relationship is not described as blob identity.
-- Added persistent `record_id` values to all 129 active Pre-Standard records.
-- Added exact Hub Xet file IDs and byte sizes for every
-  Pre-Standard file.
-- Added playback duration, stored dimensions/orientation, reported frame rate,
-  codec, pixel format, container, and audio-stream presence for every
-  Pre-Standard file.
-- Normalized Pre-Standard dimension casing and removed duplicate values from
-  semicolon lists without inventing missing historical facts.
-- Retained the 338 Standard / 129 Pre-Standard media membership unchanged.
-### Viewer configuration
-- Replaced the combined `default/train` surface with separate
-  `canonical/archive` and `pre_standard/archive` configurations.
-- Made `canonical` the default configuration.
-- Declared the full feature contract inside each builder configuration so the
-  generated Parquet schemas remain identical even when a source CSV column
-  happens to contain only integer-looking values.
-- Declared stored dimensions and byte sizes as integers and `has_audio` as a
-  boolean; retained floating-point frame rate for historical encodings.
-- Continued to exclude the nested provenance subtree through direct-file
-  globs.
-### Validation and documentation
-- Extended validation across both active tiers, including real calendar-date
-  parsing, positive numeric checks, hash format, boolean values, filename/date
-  agreement for canonical files, cross-tier identity uniqueness, and complete
-  technical metadata.
-- Added direct comparison of all indexed content hashes and byte sizes against
-  a pinned Hub API repository inventory.
-- Corrected three recently added canonical rows whose `hub_xet_hash` values
-  contained the LFS-compatible SHA-256 instead of the Xet file ID. Their local
-  SHA-256 evidence remains documented in `notes`.
-- Documented 50.06 total playback hours and full active-index technical
-  coverage.
-- Preserved unresolved semantic issues as explicit warnings: the canonical
-  30×40 Paper/IllustrationBoard conflict, five unknown-date midnight values,
-  and two incomplete Pre-Standard material descriptions.
-- Added `tools/enrich_prestandard.py` so the technical enrichment can be
-  repeated against a pinned Hub inventory and revision without intentionally
-  transferring full video payloads.
-- Added `tools/capture_hub_inventory.py` to capture the Hub Xet file IDs used
-  by `hub_xet_hash`; these are distinct from the LFS-compatible SHA-256 values
-  exposed by the ordinary repository inventory.
-### Media payload
-- Renamed the canonical object server-side to
-  `2025-09-06.1346.BallpointPen.Ink.Paper.12x9.mp4` without changing its video
-  bytes.
-- Removed the now-resolved near-duplicate `2025.11.15(116.1).mp4` from the
-  unresolved provenance payload; its path, relationship, differing object
-  identities, and removal remain documented in metadata and repository
-  history.
-- No video was downloaded in full, transcoded, replaced, or newly uploaded.
-- No audio stream was modified.
-## v0.2.0 — Release candidate
-Base repository revision:
-`339e6149de130cbe2d001f7a0e5247872bc788ec`
-### Metadata contract
-- Added persistent `record_id` values for all 338 canonical records.
-- Added `collection_tier`, `is_canonical`, and
-  `acquisition_protocol_version`.
-- Normalized canonical multi-value `tool` and `medium` fields from pipes to
-  semicolons.
-- Defined tool and medium fields as independent ordered unique lists rather
-  than unsupported positional pairs.
-- Preserved every canonical file path, content hash, technical property, and
-  provenance value from the pinned source index.
-- Removed one pre-standard metadata row whose corresponding media is not
-  distributed because the required ownership and provenance threshold was not
-  met. No identifying local path or content hash is published for the excluded
-  holding.
-- Added complete canonical rows for three previously unindexed Standard files.
-  Their local inbox SHA-256 values exactly match the current Hub LFS identities;
-  stream metadata was extracted from those matching bytes.
-### Documentation
-- Distinguished archive scope from currently published video coverage.
-- Documented that the default Hub `train` split is not an official experiment
-  split.
-- Distinguished capture orientation from stored encoded orientation.
-- Added intended-use, unsupported-use, bias, privacy, incidental-rights, audio,
-  access, citation, and reproducibility guidance.
-- Documented missing temporal and physical calibration required for rigorous
-  motor-control measurement.
-### Validation
-- Added `tools/repair_metadata.py` for the reproducible v0.1-to-v0.2 transform.
-- Added `tools/validate_metadata.py` for identity, schema, technical-field,
-  orientation, duplicate, and Viewer-path checks.
-- Retained the 465-row pinned Dataset Viewer snapshot as a historical base
-  audit input. Final revised membership is validated against the PR repository
-  tree because the Viewer has not yet rebuilt from the amended indexes.
-- Reconciled the repository tree with both active indexes: 338 indexed
-  canonical records and 129 published pre-standard records, both with
-  one-to-one row/file coverage.
-- Added `tools/metadata_additions_v0.2.csv` so the 338-row index regenerates
-  deterministically from the pinned 335-row source plus 3 audited additions.
-### Media payload
-- No video was downloaded, moved, deleted, renamed, transcoded, or replaced.
-- No audio stream was modified.
-- No historical relationship was inferred or promoted.
-### Deferred
-- Formal Hub configurations separating `canonical` and `pre_standard` remain
-  pending a Viewer-build test because canonical media and provenance holdings
-  share a directory subtree.
-- Technical ingestion of 129 pre-standard records remains incomplete.
-- Public ingestion of the earlier 2012–2016 archive—primarily uploaded 1080p
-  drawing videos, with some livestream-derived material—remains pending.
-- No lightweight proxy-video release is included in this metadata-only change.

 # Changelog
+## Unreleased — September 1–2 complete fragment-sequence ingestion
 - Added 32 creator-confirmed, unchanged canonical Framelapse source fragments
+  totaling 10,374,907,938 bytes and 2,027.579415 seconds of encoded playback.
+- Preserved three complete source-recording sequences as ordered `RecNN` sets
+  containing 12, 9, and 11 canonical fragments.
+- Increased active membership to 520 Standard plus 128 Pre-Standard records,
+  or 648 total, without changing the 29-field schema or
   `standard-2025-07-13` protocol ID.
 - Added a separate 32-row, 15-field dated relationship sidecar containing only
   canonical fragments; no concatenated or transcoded derivative was added.
   `com.android.capture.fps=5.000000` is retained without inferring real drawing
   time.
 - Bound the 32 media objects at immutable media-only PR revision
+  `715d6ba31ae7dcd447d99467352bcf5ee240aa4a`; the relationship sidecar pins
+  metadata-bearing revision `e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878`.
 - Retained media-object-level `record_id` identity. This update does not add a
   global `work_id`, backfill historical rows, create a v3 release, or otherwise
   bump the dataset version.
+## Unreleased — semantic documentation clarification
+- Corrected fifteen creator-confirmed June 18–30, 2026 30 × 40 in records from
+  `Paper` to `IllustrationBoard` in their paths and metadata. The LFS pointers,
+  payload SHA-256 values, stable `record_id` values, Xet identities, byte sizes,
+  technical fields, and `Rec01`–`Rec15` order are unchanged.
+- Normalized five Pre-Standard `time = 00:00` values to unknown because their
+  incomplete dates do not establish documented midnight; the historical paths
+  retain literal `0000` and `notes` explain the distinction.
+- Restored `Brush;FountainPen`, `Ink`, and `WatercolorPaper` for one
+  Pre-Standard row from explicit filename tokens without inferring positional
+  tool/medium pairs. One separate row still lacks support evidence and now says
+  so explicitly in `notes`.
+- Aligned the Pre-Standard tool/medium rule with the canonical contract:
+  observed lists are independent and token position does not establish pairs.
+- Documented that `date` and `time` preserve finish labels whose recording,
+  session, sequence, or work scope is not normalized in the current schema.
+- Clarified that dated fragment sidecars cover reviewed ingestions rather than
+  every historical `RecNN` row, and that absence does not negate a relationship.
+- Relabeled the 404-row Viewer state as a pinned historical snapshot, explained
+  the CSV `file_name` to loaded `video` feature mapping, and replaced broad
+  raw/master/audio wording with the verified 485-of-616 stream-presence count.
+- No media payload, active metadata row, record identity, or relationship
+  assertion was added or removed; the fifteen path corrections preserve media
+  identity.
+## Unreleased — September 1 complete fragment-sequence ingestion
+- Added 13 creator-confirmed, unchanged canonical Framelapse source fragments
+  totaling 5,109,481,466 bytes and 983.556669 seconds of encoded playback.
+- Preserved two complete source-recording sequences as ordered `RecNN` sets
+  containing 4 and 9 canonical fragments.
+- Increased active membership to 488 Standard plus 128 Pre-Standard records,
+  or 616 total, without changing the 29-field schema or
+  `standard-2025-07-13` protocol ID.
+- Added a separate 13-row, 15-field dated relationship sidecar containing only
+  canonical fragments; no concatenated or transcoded derivative was added.
+- Left `original_filename` blank because, at ingest-audit time, the source
+  files bore canonical archive names and no pre-rename device-name mapping was
+  independently retained.
+- Verified 13/13 local SHA-256 values and complete packet-stream demuxes, plus
+  39/39 decoded start/middle/end frame samples. The literal container tag
+  `com.android.capture.fps=5.000000` is retained without inferring real drawing
+  time.
+- Bound the 13 media objects at immutable media-only PR revision
+  `e2094ae582c057df9d40e9bfe4dc00afed0bad2a`; the relationship sidecar pins
+  metadata-bearing revision `fe66d1dbb117486c2046376423316fd2cc25d488`.
+- Retained media-object-level `record_id` identity. This update does not add a
+  global `work_id`, backfill historical rows, create a v3 release, or otherwise
+  bump the dataset version.
+## Unreleased — August 31 complete fragment-sequence ingestion
+- Added 32 creator-confirmed, unchanged canonical Framelapse source fragments
+  totaling 9,071,159,472 bytes and 1,762.815248 seconds of encoded playback.
+- Preserved four complete source-recording sequences as ordered `RecNN` sets
+  containing 8, 6, 7, and 11 canonical fragments.
+- Increased active membership to 475 Standard plus 128 Pre-Standard records,
+  or 603 total, without changing the 29-field schema or
+  `standard-2025-07-13` protocol ID.
+- Added a separate 32-row, 15-field dated relationship sidecar containing only
+  canonical fragments; no concatenated or transcoded derivative was added.
+- Left `original_filename` blank because, at ingest-audit time, the source
+  files bore canonical archive names and no pre-rename device-name mapping was
+  independently retained.
+- Verified 32/32 local SHA-256 values and complete packet-stream demuxes, plus
+  96/96 decoded start/middle/end frame samples. The literal container tag
+  `com.android.capture.fps=5.000000` is retained without inferring real drawing
+  time.
+- Bound the 32 media objects at immutable media-only PR revision
+  `a05e2fe9d485435f8c3d0adbfe4aa80d289e9867`; the relationship sidecar pins
+  metadata-bearing revision `480bc7e24261e6d3bbcacd261a00782b7e40211a`.
+- Retained media-object-level `record_id` identity. This update does not add a
+  global `work_id`, backfill historical rows, create a v3 release, or otherwise
+  bump the dataset version.
+## Unreleased — August 29–30 complete fragment-sequence ingestion
+- Added 39 creator-confirmed, unchanged canonical Framelapse source fragments
+  totaling 17,470,306,160 bytes and 3,403.665326 seconds of encoded playback.
+- Preserved five complete source-recording sequences as ordered `RecNN` sets
+  containing 9, 5, 4, 15, and 6 canonical fragments.
+- Increased active membership to 443 Standard plus 128 Pre-Standard records,
+  or 571 total, without changing the 29-field schema or
+  `standard-2025-07-13` protocol ID.
+- Added a separate 39-row, 15-field dated relationship sidecar containing only
+  canonical fragments; no concatenated or transcoded derivative was added.
+- Left `original_filename` blank because, at ingest-audit time, the source
+  files bore canonical archive names and no pre-rename device-name mapping was
+  independently retained.
+- Verified 39/39 local SHA-256 values and complete packet-stream demuxes, plus
+  117/117 decoded start/middle/end frame samples. The literal container tag
+  `com.android.capture.fps=5.000000` is retained without inferring real drawing
+  time.
+- Bound the 39 media objects at immutable media-only PR revision
+  `b7ac091a06917eb712a4493dbb763e751c2bf459`; the relationship sidecar pins
+  metadata-bearing revision `7293edccff883b4c604d710addbf26c85910cfcc`.
+- Retained media-object-level `record_id` identity. This update does not add a
+  global `work_id`, backfill historical rows, create a v3 release, or otherwise
+  bump the dataset version.
+## Unreleased — canonical tool-token and timing clarification
+- Corrected five active Standard paths whose tool tokens contradicted their
+  metadata: three `BallpoinPen` typos, one split `Ballpoint.Pen` token, and one
+  split `Fountain.Pen` token.
+- Retained every existing `record_id`, media payload, Xet identity, byte size,
+  and technical metadata. This is a server-side path normalization, not a
+  re-encoding or new recording.
+- Added validation requiring each declared Standard tool to appear as an
+  exact, case-sensitive filename token. Tool and medium lists remain
+  independent; no positional pairing is inferred.
+- Left revision-pinned historical relationship sidecars unchanged because
+  their earlier paths remain correct evidence at their declared revisions.
+- Clarified that 0.2 seconds is the Standard protocol's nominal capture
+  setting, not a confirmed per-record measurement or calibrated real-time
+  basis.
+## Unreleased — verification and documentation consolidation
+- Clarified that each active metadata row represents one published video
+  object, not necessarily one drawing, session, or complete process.
+- Kept documented fragment-sequence and physical-reference relationships in
+  separate sidecars without adding a global `work_id` or changing either
+  29-field active video index.
+- Replaced batch-by-batch README narration and stale Viewer migration counts
+  with current, revision-bound summaries; added a provenance navigation index
+  for the nine documented fragment sequences.
+- Corrected nine physical-reference `hash_state` values that claimed paired
+  hashes despite blank paired filename/hash fields. The correction reports
+  ledger availability only and does not reinterpret any photograph or owner
+  evidence.
+- Added a dedicated physical-reference validator and regression tests; fragment
+  validation now checks canonical byte sizes and states whether a pinned remote
+  inventory was supplied.
+- Removed the unsupported `video-classification` task facet while retaining
+  `feature-extraction` and `annotations_creators: expert-generated`.
+- This consolidation does not alter media, active video-index rows, record
+  identities, or acquisition-protocol identifiers.
+## Unreleased — August 7, 2025 date correction
+- Corrected creator-confirmed record `tla-c043b4f55b583c4e` from August 7,
+  2026 to August 7, 2025 in both its canonical path and metadata date.
+- Retained the unchanged 86,415,894-byte media payload, stable `record_id`,
+  Xet identity, technical metadata, collection membership, and 23:06 time.
+- This is a descriptive date correction, not a new recording, re-encoding, or
+  change to the `standard-2025-07-13` acquisition protocol boundary.
+## Unreleased — August 28–29 complete fragment-sequence ingestion
+- Added 19 creator-confirmed, unchanged canonical Framelapse source fragments
+  totaling 10,661,404,849 bytes and 2,089.745536 seconds of encoded playback.
+- Preserved four complete drawing sequences as ordered `RecNN` sets containing
+  10, 4, 2, and 3 canonical fragments.
+- Increased active membership to 404 Standard plus 128 Pre-Standard records,
+  or 532 total, without changing the 29-field schema or
+  `standard-2025-07-13` protocol ID.
+- Added a separate 19-row, 15-field dated relationship sidecar containing only
+  canonical fragments; no concatenated or transcoded derivative was added.
+- Left `original_filename` blank because, at ingest-audit time, the source
+  files bore canonical archive names and no pre-rename device-name mapping was
+  independently retained.
+- Verified 19/19 local SHA-256 values and complete packet-stream demuxes, plus
+  57/57 decoded start/middle/end frame samples. The literal container tag
+  `com.android.capture.fps=5.000000` is retained without inferring real drawing
+  time.
+- Bound the 19 media objects at immutable media-only PR revision
+  `0c421b555a2558887b65b0b25380b35c642fa7e1`; the final relationship sidecar
+  pins metadata-bearing revision `429541ae7f93c869056df956873f3441d580914c`.
+- Retained media-object-level `record_id` identity. This update does not add a
+  global `work_id`, backfill historical rows, create a v3 release, or otherwise
+  bump the dataset version.
+## Unreleased — August 24–27 complete fragment-sequence ingestion
+- Added 22 creator-confirmed, unchanged canonical Framelapse source fragments
+  totaling 17,389,875,055 bytes and 3,391.699091 seconds of encoded playback.
+- Preserved five complete drawing sequences as ordered `RecNN` sets containing
+  2, 2, 6, 2, and 10 canonical fragments.
+- Increased active membership to 385 Standard plus 128 Pre-Standard records,
+  or 513 total, without changing the 29-field schema or
+  `standard-2025-07-13` protocol ID.
+- Added a separate 27-row, 15-field dated relationship sidecar covering the 22
+  canonical fragments and five unchanged noncanonical InShot derivatives.
+- Stored the five derivatives under the nested provenance `InShot/` directory;
+  they remain outside both active metadata indexes, Viewer configurations, and
+  active byte and duration totals.
+- Retained media-object-level `record_id` identity. This update does not add a
+  global `work_id`, backfill historical rows, create a v3 release, or otherwise
+  bump the dataset version.
+- Verified the 27 planned media additions, with no deletion or changed existing
+  path, at immutable media-only PR revision
+  `bb4160045cae21a71bf360278549398dc9d2a028`.
+- Verified all 27 relationship paths, SHA-256 values, byte sizes, Xet
+  identities, canonical metadata joins, and exact root metadata bytes against
+  immutable metadata-bearing PR revision
+  `8a21015210c19936d3b18175ae3f4061ae1e5d8d`. This validation does not assert
+  Viewer settlement or merge status.
+## Unreleased — June 2026 recording-sequence filename correction
+- Corrected the canonical paths of 15 existing 30 × 40 in recordings dated
+  June 18–30, 2026, to preserve the creator-confirmed continuous filename
+  sequence `Rec01` through `Rec15`.
+- Retained every media payload, stable `record_id`, Xet identity, byte size,
+  technical field, and membership count; this is a filename correction, not a
+  media addition or re-encoding.
+- Clarified that documented `RecNN` order may continue across finish dates and
+  does not reset merely because the date changes.
+- The suffixes document recording order only; they do not by themselves assert
+  separate drawings, sessions, or completion states.
+## Unreleased — August 22–23 recording-sequence ingestion
+- Added three creator-verified Standard recordings dated August 22–23, 2026,
+  totaling 51,022,796,325 bytes and 3,895.390997 seconds of encoded playback.
+- Increased active membership to 363 Standard plus 128 Pre-Standard records
+  without changing the 29-field schema or `standard-2025-07-13` protocol ID.
+- Retained literal `Rec01` through `Rec03` filename suffixes for the continuing
+  14 × 17 in sequence; the suffixes do not independently claim an endpoint.
+- Verified direct visual continuity and drawing progression across all three
+  recordings; integrity validation covers every complete video and audio stream.
+- Documented the creator-confirmed Rec03 ink change at approximately `00:04:59`:
+  Pelikan black before the visible refill handling and unmarked, unknown-brand
+  black ink afterward. No replacement brand is inferred.
+- Rec03 produced one end-of-stream non-monotonic DTS warning from FFmpeg's null
+  output during combined-stream validation. Source packet and decoded-frame
+  timestamps at the tail remained strictly increasing, and both streams decoded.
+## Unreleased — August 2026 Standard ingestion
+- Added three creator-verified Standard recordings dated August 17–19, 2026,
+  totaling 50,478,909,746 bytes and 3,856.391997 seconds of encoded playback.
+- Increased active membership to 360 Standard plus 128 Pre-Standard records
+  without changing the 29-field schema or `standard-2025-07-13` protocol ID.
+- Fully decoded all 231,383 video frames and every audio stream; no source
+  corruption, dropped frames, duplicated frames, or broken endpoints were
+  found.
+- Added the first 14 × 17 in Standard record and documented its Strathmore 500
+  Series Premium Bristol plate surface from the creator-supplied packaging.
+- Retained `Rec01` on the 14 × 17 in filename because `Rec02` is expected; the
+  suffix distinguishes recording sequence only.
+- Applied media integrity, identity, rights, and traceable-metadata criteria
+  without filtering by perceived artistic quality.
+## Unreleased — July 13 tier promotion
+- Promoted `tla-3f49a8917fe22676` from Pre-Standard to Standard after the
+  creator confirmed that clean media integrity is the controlling membership
+  criterion.
+- Verified all 1,205 video frames and the audio stream decode successfully.
+  The shortened clip begins mid-process and reaches a completed, signed
+  endpoint without corruption or a broken ending.
+- Preserved the 141,221,810-byte media payload, Xet identity, stable record ID,
+  and the 485-record active total while relocating its repository path.
+- Moved the documented protocol boundary coherently to
+  `standard-2025-07-13` across the canonical index.
+- Updated active membership to 357 Standard plus 128 Pre-Standard records
+  without changing the 29-field schema.
+## Unreleased — Standard ingestion
+### Membership and evidence policy
+- Added 17 creator-verified Standard records totaling 9,289,459,921 bytes and
+  1,071.199 seconds of encoded playback.
+- Increased active membership to 356 Standard plus 129 Pre-Standard records.
+- Applied technical integrity, identity, rights, and traceable-metadata
+  criteria without filtering records by perceived artistic quality or degree
+  of completion.
+- Preserved the existing 29-field schema and separate
+  `canonical/archive` and `pre_standard/archive` configurations.
+### Qualified media conditions
+- Documented two shortened derivatives as active Standard representatives
+  without describing them as full-duration capture masters.
+- Recorded pronounced lighting variation for the 2026-01-11 record.
+- Retained one non-monotonic duplicate video-timestamp warning for each of the
+  2026-01-11 and 2026-02-08 records; both files decode completely.
+- Corrected the publication path `2025-09.27...` to canonical date syntax
+  `2025-09-27...` without altering the local source file.
+## Post-v0.3 — March/April provenance correction
+### Record identity and physical metadata
+- Promoted historical `2026.03.04(214.0).mp4` from the unresolved provenance
+  subtree as the true `2026-03-04 14:21` BallpointPen / Ink / Paper / 9x12
+  Standard record. Its 6,587,685,497-byte payload receives a new stable record
+  ID based on its former archival path.
+- Corrected the distinct 496,296,535-byte object formerly occupying that path
+  to `2026-04-04 16:49` after curator verification against the physical work.
+  Its existing stable record ID remains attached to the same media object.
+- Increased active membership to 339 Standard plus 129 Pre-Standard records;
+  no video bytes were added to repository storage.
+- Preserved the immutable `v0.3.0` tag at its original 467-record commit.
+### Media payload
+- Moved both existing Hub objects server-side without transcoding, replacing,
+  downloading in full, or uploading video bytes.
+- Removed the resolved `Unresolved_Series_9x12/2026.03.04(214.0).mp4` path only
+  after preserving that same object at its corrected canonical path.
+- No audio stream was modified.
+## v0.3.0 — Release candidate
+### Metadata contract
+- Corrected record `tla-a6bd9380e0256aff` from an unknown finish time to the
+  curator-confirmed `2025-09-06 13:46` while retaining the confirmed 12x9
+  physical dimensions.
+- Linked historical `2025.11.15(116.1).mp4` to that record after curator
+  confirmation that it depicts the same physical drawing and near-duplicate
+  video content. The files have distinct byte sizes, SHA-256 values, and Xet
+  identities, so the relationship is not described as blob identity.
+- Added persistent `record_id` values to all 129 active Pre-Standard records.
+- Added exact Hub Xet file IDs and byte sizes for every
+  Pre-Standard file.
+- Added playback duration, stored dimensions/orientation, reported frame rate,
+  codec, pixel format, container, and audio-stream presence for every
+  Pre-Standard file.
+- Normalized Pre-Standard dimension casing and removed duplicate values from
+  semicolon lists without inventing missing historical facts.
+- Retained the 338 Standard / 129 Pre-Standard media membership unchanged.
+### Viewer configuration
+- Replaced the combined `default/train` surface with separate
+  `canonical/archive` and `pre_standard/archive` configurations.
+- Made `canonical` the default configuration.
+- Declared the full feature contract inside each builder configuration so the
+  generated Parquet schemas remain identical even when a source CSV column
+  happens to contain only integer-looking values.
+- Declared stored dimensions and byte sizes as integers and `has_audio` as a
+  boolean; retained floating-point frame rate for historical encodings.
+- Continued to exclude the nested provenance subtree through direct-file
+  globs.
+### Validation and documentation
+- Extended validation across both active tiers, including real calendar-date
+  parsing, positive numeric checks, hash format, boolean values, filename/date
+  agreement for canonical files, cross-tier identity uniqueness, and complete
+  technical metadata.
+- Added direct comparison of all indexed content hashes and byte sizes against
+  a pinned Hub API repository inventory.
+- Corrected three recently added canonical rows whose `hub_xet_hash` values
+  contained the LFS-compatible SHA-256 instead of the Xet file ID. Their local
+  SHA-256 evidence remains documented in `notes`.
+- Documented 50.06 total playback hours and full active-index technical
+  coverage.
+- Preserved unresolved semantic issues as explicit warnings: the canonical
+  30×40 Paper/IllustrationBoard conflict, five unknown-date midnight values,
+  and two incomplete Pre-Standard material descriptions.
+- Added `tools/enrich_prestandard.py` so the technical enrichment can be
+  repeated against a pinned Hub inventory and revision without intentionally
+  transferring full video payloads.
+- Added `tools/capture_hub_inventory.py` to capture the Hub Xet file IDs used
+  by `hub_xet_hash`; these are distinct from the LFS-compatible SHA-256 values
+  exposed by the ordinary repository inventory.
+### Media payload
+- Renamed the canonical object server-side to
+  `2025-09-06.1346.BallpointPen.Ink.Paper.12x9.mp4` without changing its video
+  bytes.
+- Removed the now-resolved near-duplicate `2025.11.15(116.1).mp4` from the
+  unresolved provenance payload; its path, relationship, differing object
+  identities, and removal remain documented in metadata and repository
+  history.
+- No video was downloaded in full, transcoded, replaced, or newly uploaded.
+- No audio stream was modified.
+## v0.2.0 — Release candidate
+Base repository revision:
+`339e6149de130cbe2d001f7a0e5247872bc788ec`
+### Metadata contract
+- Added persistent `record_id` values for all 338 canonical records.
+- Added `collection_tier`, `is_canonical`, and
+  `acquisition_protocol_version`.
+- Normalized canonical multi-value `tool` and `medium` fields from pipes to
+  semicolons.
+- Defined tool and medium fields as independent ordered unique lists rather
+  than unsupported positional pairs.
+- Preserved every canonical file path, content hash, technical property, and
+  provenance value from the pinned source index.
+- Removed one pre-standard metadata row whose corresponding media is not
+  distributed because the required ownership and provenance threshold was not
+  met. No identifying local path or content hash is published for the excluded
+  holding.
+- Added complete canonical rows for three previously unindexed Standard files.
+  Their local inbox SHA-256 values exactly match the current Hub LFS identities;
+  stream metadata was extracted from those matching bytes.
+### Documentation
+- Distinguished archive scope from currently published video coverage.
+- Documented that the default Hub `train` split is not an official experiment
+  split.
+- Distinguished capture orientation from stored encoded orientation.
+- Added intended-use, unsupported-use, bias, privacy, incidental-rights, audio,
+  access, citation, and reproducibility guidance.
+- Documented missing temporal and physical calibration required for rigorous
+  motor-control measurement.
+### Validation
+- Added `tools/repair_metadata.py` for the reproducible v0.1-to-v0.2 transform.
+- Added `tools/validate_metadata.py` for identity, schema, technical-field,
+  orientation, duplicate, and Viewer-path checks.
+- Retained the 465-row pinned Dataset Viewer snapshot as a historical base
+  audit input. Final revised membership is validated against the PR repository
+  tree because the Viewer has not yet rebuilt from the amended indexes.
+- Reconciled the repository tree with both active indexes: 338 indexed
+  canonical records and 129 published pre-standard records, both with
+  one-to-one row/file coverage.
+- Added `tools/metadata_additions_v0.2.csv` so the 338-row index regenerates
+  deterministically from the pinned 335-row source plus 3 audited additions.
+### Media payload
+- No video was downloaded, moved, deleted, renamed, transcoded, or replaced.
+- No audio stream was modified.
+- No historical relationship was inferred or promoted.
+### Deferred
+- Formal Hub configurations separating `canonical` and `pre_standard` remain
+  pending a Viewer-build test because canonical media and provenance holdings
+  share a directory subtree.
+- Technical ingestion of 129 pre-standard records remains incomplete.
+- Public ingestion of the earlier 2012–2016 archive—primarily uploaded 1080p
+  drawing videos, with some livestream-derived material—remains pending.
+- No lightweight proxy-video release is included in this metadata-only change.

README.md CHANGED Viewed

@@ -1,786 +1,789 @@
----
-license: cc-by-nc-4.0
-pretty_name: Time-Lapse Artifacts
-annotations_creators:
-- expert-generated
-source_datasets:
-- original
-size_categories:
-- n<1K
-task_categories:
-- feature-extraction
-tags:
-- drawing
-- longitudinal-study
-- traditional-art
-- provenance
-- single-subject
-- video
-- computer-vision
-- time-lapse
-- human-motion
-dataset_info:
-- config_name: canonical
-  features:
-  - name: video
-    dtype: video
-  - name: record_id
-    dtype: large_string
-  - name: collection_tier
-    dtype: large_string
-  - name: is_canonical
-    dtype: bool
-  - name: acquisition_protocol_version
-    dtype: large_string
-  - name: date
-    dtype: large_string
-  - name: time
-    dtype: large_string
-  - name: tool
-    dtype: large_string
-  - name: medium
-    dtype: large_string
-  - name: support
-    dtype: large_string
-  - name: dimensions
-    dtype: large_string
-  - name: duration_seconds
-    dtype: float64
-  - name: width_px
-    dtype: int64
-  - name: height_px
-    dtype: int64
-  - name: orientation
-    dtype: large_string
-  - name: encoded_frame_rate
-    dtype: float64
-  - name: video_codec
-    dtype: large_string
-  - name: pixel_format
-    dtype: large_string
-  - name: container
-    dtype: large_string
-  - name: has_audio
-    dtype: bool
-  - name: hub_xet_hash
-    dtype: large_string
-  - name: original_filename
-    dtype: large_string
-  - name: provenance_status
-    dtype: large_string
-  - name: legacy_provenance_path
-    dtype: large_string
-  - name: legacy_related_references
-    dtype: large_string
-  - name: evidence_method
-    dtype: large_string
-  - name: provenance_reference_duration_delta_seconds
-    dtype: float64
-  - name: size_bytes
-    dtype: int64
-  - name: notes
-    dtype: large_string
-  splits:
-  - name: archive
-    num_examples: 488
-- config_name: pre_standard
-  features:
-  - name: video
-    dtype: video
-  - name: record_id
-    dtype: large_string
-  - name: collection_tier
-    dtype: large_string
-  - name: is_canonical
-    dtype: bool
-  - name: acquisition_protocol_version
-    dtype: large_string
-  - name: date
-    dtype: large_string
-  - name: time
-    dtype: large_string
-  - name: tool
-    dtype: large_string
-  - name: medium
-    dtype: large_string
-  - name: support
-    dtype: large_string
-  - name: dimensions
-    dtype: large_string
-  - name: duration_seconds
-    dtype: float64
-  - name: width_px
-    dtype: int64
-  - name: height_px
-    dtype: int64
-  - name: orientation
-    dtype: large_string
-  - name: encoded_frame_rate
-    dtype: float64
-  - name: video_codec
-    dtype: large_string
-  - name: pixel_format
-    dtype: large_string
-  - name: container
-    dtype: large_string
-  - name: has_audio
-    dtype: bool
-  - name: hub_xet_hash
-    dtype: large_string
-  - name: original_filename
-    dtype: large_string
-  - name: provenance_status
-    dtype: large_string
-  - name: legacy_provenance_path
-    dtype: large_string
-  - name: legacy_related_references
-    dtype: large_string
-  - name: evidence_method
-    dtype: large_string
-  - name: provenance_reference_duration_delta_seconds
-    dtype: float64
-  - name: size_bytes
-    dtype: int64
-  - name: notes
-    dtype: large_string
-  splits:
-  - name: archive
-    num_examples: 128
-configs:
-- config_name: canonical
-  default: true
-  features:
-  - name: video
-    dtype: video
-  - name: record_id
-    dtype: large_string
-  - name: collection_tier
-    dtype: large_string
-  - name: is_canonical
-    dtype: bool
-  - name: acquisition_protocol_version
-    dtype: large_string
-  - name: date
-    dtype: large_string
-  - name: time
-    dtype: large_string
-  - name: tool
-    dtype: large_string
-  - name: medium
-    dtype: large_string
-  - name: support
-    dtype: large_string
-  - name: dimensions
-    dtype: large_string
-  - name: duration_seconds
-    dtype: float64
-  - name: width_px
-    dtype: int64
-  - name: height_px
-    dtype: int64
-  - name: orientation
-    dtype: large_string
-  - name: encoded_frame_rate
-    dtype: float64
-  - name: video_codec
-    dtype: large_string
-  - name: pixel_format
-    dtype: large_string
-  - name: container
-    dtype: large_string
-  - name: has_audio
-    dtype: bool
-  - name: hub_xet_hash
-    dtype: large_string
-  - name: original_filename
-    dtype: large_string
-  - name: provenance_status
-    dtype: large_string
-  - name: legacy_provenance_path
-    dtype: large_string
-  - name: legacy_related_references
-    dtype: large_string
-  - name: evidence_method
-    dtype: large_string
-  - name: provenance_reference_duration_delta_seconds
-    dtype: float64
-  - name: size_bytes
-    dtype: int64
-  - name: notes
-    dtype: large_string
-  data_files:
-  - split: archive
-    path:
-    - metadata.csv
-    - Standard_Time_Lapses/*.mp4
-- config_name: pre_standard
-  features:
-  - name: video
-    dtype: video
-  - name: record_id
-    dtype: large_string
-  - name: collection_tier
-    dtype: large_string
-  - name: is_canonical
-    dtype: bool
-  - name: acquisition_protocol_version
-    dtype: large_string
-  - name: date
-    dtype: large_string
-  - name: time
-    dtype: large_string
-  - name: tool
-    dtype: large_string
-  - name: medium
-    dtype: large_string
-  - name: support
-    dtype: large_string
-  - name: dimensions
-    dtype: large_string
-  - name: duration_seconds
-    dtype: float64
-  - name: width_px
-    dtype: int64
-  - name: height_px
-    dtype: int64
-  - name: orientation
-    dtype: large_string
-  - name: encoded_frame_rate
-    dtype: float64
-  - name: video_codec
-    dtype: large_string
-  - name: pixel_format
-    dtype: large_string
-  - name: container
-    dtype: large_string
-  - name: has_audio
-    dtype: bool
-  - name: hub_xet_hash
-    dtype: large_string
-  - name: original_filename
-    dtype: large_string
-  - name: provenance_status
-    dtype: large_string
-  - name: legacy_provenance_path
-    dtype: large_string
-  - name: legacy_related_references
-    dtype: large_string
-  - name: evidence_method
-    dtype: large_string
-  - name: provenance_reference_duration_delta_seconds
-    dtype: float64
-  - name: size_bytes
-    dtype: int64
-  - name: notes
-    dtype: large_string
-  data_files:
-  - split: archive
-    path:
-    - Pre_Standard_Time_Lapses/metadata.csv
-    - Pre_Standard_Time_Lapses/*.mp4
----
-# time-lapse-artifacts
-616 time-lapse recordings of one artist's traditional drawing practice across
-nearly two years (September 2024–September 1, 2026), with standardized acquisition
-since July 13, 2025. Across 2,062,483,711,146 bytes (approximately 2.06 TB) of
-video, the archive follows the same artist working in physical media—including
-pencil, ballpoint pen, fountain pen, brush, graphite, and ink—on fixed-format
-paper and illustration board.
-The release combines 488 canonical Standard videos and 128 earlier
-Pre-Standard recordings. Every active indexed video has a persistent record
-ID, content hash, byte size, and encoded-stream metadata; historical session
-and provenance fields remain less complete in the Pre-Standard tier.
-**Unit of record:** each active metadata row identifies one published MP4
-video object. A row does not necessarily represent one drawing, one
-uninterrupted session, or a complete start-to-finish process. When documented,
-fragment-sequence and physical-reference relationships remain in separate
-revision-pinned sidecars joined by `record_id`; absent relationships remain
-unknown.
-**[Browse the Standard recordings](https://maxwellinked.github.io/time-lapse-artifacts/)**
-through a searchable public browser with muted motion previews. The browser is
-a dynamic presentation layer and may lag the current Hugging Face dataset.
-Hugging Face remains authoritative for media, record identities, and
-machine-readable metadata.
-In this dataset, provenance refers to the documented relationship between a
-physical drawing and its time-lapse record, rather than to histories of
-ownership or sale.
-An earlier holding associated with the 2012–2016 archival scope comprises
-2,381 locally held real-time recordings totaling 9,060,310,121,597 bytes
-(approximately 9.06 TB). It consists primarily of uploaded 1080p drawing
-videos, with some livestream-derived material. Its [file-level holdings and SHA-256 manifest](Earlier_Archive_2012_2016/HOLDINGS_MANIFEST.json)
-is published in this repository; the media itself is not hosted and remains
-excluded from the current 616-record release totals.
-## Snapshot and Coverage
-The table below describes this revision. Batch-level history is maintained in
-[`CHANGELOG.md`](CHANGELOG.md). The immutable `v0.3.0` tag remains a 467-row
-historical release and does not describe current `main`.
-| Collection tier | Published MP4s | Indexed rows | Date coverage | Metadata state |
-| --- | ---: | ---: | --- | --- |
-| `standard` | 488 direct files | 488 | 2025-07-13–2026-09-01 | Complete core technical metadata for every direct Standard file |
-| `pre_standard` | 128 | 128 | 2024-09-17–2025-07-09, plus 9 unknown dates | Complete core technical metadata; historical descriptive and provenance gaps remain |
-| [Earlier archive](Earlier_Archive_2012_2016/README.md) (metadata-only holding) | 0 hosted videos | 0 dataset rows; 2,381 fixity entries | Historical scope label 2012–2016 | 9,060,310,121,597 bytes held offline; file-level SHA-256 manifest published |
-The Hub configurations use the split name `archive`. No official
-train/validation/test partition has been defined.
-## Viewer and Metadata Discovery
-The release exposes two explicit configurations so metadata-complete canonical
-records are not silently mixed with historically less complete records:
-- `canonical/archive` is the default and loads root `metadata.csv` with the 488
-  direct files in `Standard_Time_Lapses/`
-- `pre_standard/archive` loads `Pre_Standard_Time_Lapses/metadata.csv` with the
-  128 direct files in that folder
-Each configuration has the same declared 29-column schema. Stored dimensions
-and byte sizes are nullable integers, `has_audio` is a nullable boolean, and
-encoded frame rate remains a float because historical encodings include
-fractional reported rates. Undocumented values load as null rather than as
-zero or false. Both indexes declare tier membership directly: the root index sets
-`collection_tier = standard` and `is_canonical = true`; the Pre-Standard CSV
-sets `collection_tier = pre_standard` and `is_canonical = false`.
-Published-index completeness is defined by the 488 rows in `canonical/archive`
-plus the 128 rows in `pre_standard/archive` and their generated Parquet
-exports. Hugging Face's separate column Statistics job is an auxiliary,
-asynchronous surface; its availability is not used to claim or reject
-row-level completeness.
-The configuration lists the two active `metadata.csv` files and only direct
-MP4 paths in `Standard_Time_Lapses/` and `Pre_Standard_Time_Lapses/`. It does
-not use a recursive canonical glob, so the nested
-`Standard_Time_Lapses/Provenance/` subtree is excluded.
-## Overview
-`time-lapse-artifacts` documents analog drawing processes across different
-recording periods and acquisition conditions. Video is the primary published
-evidence. Metadata identifies, organizes, compares, and documents recordings
-without imposing aesthetic scores or stylistic labels.
-The collection is a single-creator longitudinal archive. This makes it useful
-for studying within-practice change, but it does not represent artists,
-materials, studios, or drawing practices broadly.
-## Repository Structure
-### `Standard_Time_Lapses/`
-The directory contains 488 direct MP4 files. `metadata.csv` is their complete
-machine-readable canonical index: every direct file has one validated row with
-core technical metadata. Direct placement alone is not sufficient for future
-additions; metadata and release validation are required.
-Each canonical metadata row now includes:
-- a persistent `record_id`
-- `collection_tier = standard`
-- `is_canonical = true`
-- `acquisition_protocol_version = standard-2025-07-13`
-- descriptive session fields
-- encoded video properties
-- repository content hash and size
-- provenance fields where documented
-Files use a structured filename convention described in `SCHEMA.md`. A
-filename is descriptive, but it is not the stable identity of a record;
-external references should use `record_id`.
-### `Standard_Time_Lapses/Provenance/`
-This subtree contains supporting historical records and retained exceptions.
-It is not part of the canonical record set.
-`2026-07-31/` preserves the completed provenance release, including mappings
-between historical `Series_9x12` filenames and canonical records. The former
-full duplicate video snapshot is not retained. Relationships are preserved
-through mappings, hashes, metadata, and repository history. See the
-[provenance navigation index](Standard_Time_Lapses/Provenance/README.md).
-### `Pre_Standard_Time_Lapses/`
-These 128 recordings predate the standard acquisition protocol. They are
-published for archival continuity but are not interchangeable with canonical
-standard records. Each now has a stable `record_id`, exact Hub content hash and
-size, playback duration, stored dimensions and orientation, frame rate, codec,
-pixel format, container, and audio-stream presence. Historical dates, times,
-materials, and provenance remain incomplete where evidence is unavailable.
-Missing values must not be interpreted as zero, false, or evidence that a
-property was absent.
-The folder-local `metadata.csv` is the active index for these 128 videos and is
-loaded by the `pre_standard/archive` configuration. It follows the same
-declared 29-field schema as the canonical index while leaving undocumented
-historical fields empty.
-Material that does not meet the archive's ownership and provenance threshold
-is excluded from both the published media and the active metadata index.
-### `Earlier_Archive_2012_2016/`
-An earlier holding of 2,381 files totaling 9,060,310,121,597 bytes is held
-outside the hosted-media release. It consists primarily of uploaded 1080p
-drawing videos, with some livestream-derived material. The repository
-publishes a [file-level holdings and SHA-256 manifest](Earlier_Archive_2012_2016/HOLDINGS_MANIFEST.json),
-not the media itself. These files remain excluded from active dataset rows and
-published media totals. References to 2012–2016 describe the historical scope
-label and do not assert a capture year for every listed file.
-## Metadata and Provenance
-The metadata distinguishes documented facts, established historical
-relationships, and unresolved information. Evidence may include:
-- exact file/blob identity
-- original filenames and repository paths
-- file sizes and hashes
-- duration comparison
-- visual continuity across recordings
-- documented physical references
-- repository commit history
-Uncertain relationships are not promoted to verified relationships solely
-because dates or filenames look similar.
-The active CSV files and live Viewer use semicolons for multiple `tool` and
-`medium` values, for example `Pencil;FountainPen` and `Graphite;Ink`. A pipe
-(`|`) is **not** a valid separator in v0.2. The two fields are independent
-observed-value lists; equal list lengths and positional pairing are not
-guaranteed. See `SCHEMA.md`.
-The Standard protocol documents a nominal 0.2-second capture interval. This is
-a protocol-level default, not a confirmed per-record measurement, and it does
-not establish a calibrated real-time basis. `encoded_frame_rate` remains
-encoded playback rate, not original drawing-time sampling, and must not be used
-to infer real drawing time unless separately documented.
-### Physical-reference relationship layer
-[`Physical_References/endpoint_references.csv`](Physical_References/endpoint_references.csv)
-links 309 Standard video records to owner-confirmed photographs of their
-physical drawings through persistent `record_id` values and the pinned source
-revision. It is a separate derived relationship table and does not alter the
-29-field canonical video index.
-Version 0.1 records 52 confirmed endpoint photographs, one longitudinal
-continuation, 232 owner-confirmed record references whose exact endpoint state
-is not separately asserted, and 24 two-sided references. The photographs are
-not bundled in this release. Their reviewed filenames and available hashes
-preserve relationship evidence without implying that the media are publicly
-downloadable. See the [sidecar schema](Physical_References/SCHEMA.md) and
-[manifest](Physical_References/MANIFEST.json).
-## Acquisition and Stored-Video Orientation
-The acquisition protocol effective July 13, 2025 is documented in
-`Archive_Specifications.md`. Framelapse source fragments remain unchanged
-acquisition evidence. For reviewed fragment ingestions, a drawing may be
-represented canonically either by one selected chronological assembly or by a
-complete, verified `RecNN` sequence of unchanged source fragments. Grouping,
-order, completeness, and noncanonical derivative coverage for those ingestions
-remain in separate dated relationship manifests; the active 29-field metadata
-schema is unchanged. The manifests do not backfill every historical `RecNN`
-record. Outside them, `RecNN` establishes recording order only, and any
-grouping or completeness claim is limited to evidence explicitly recorded in
-`notes` or other documentation. A documented 4K/30-fps InShot processing
-profile remains a candidate and does not retroactively redefine existing
-records. See the
-[capture and ingest protocol](Physical_References/CAPTURE_AND_INGEST_PROTOCOL.md).
-The dated relationship sidecars preserve each ingestion as a separate pinned
-observation layer. The
-[`2026-08-27 sidecar`](Standard_Time_Lapses/Provenance/2026-08-27/fragment_sequence_relationships.csv)
-has 27 rows: 22 canonical fragments across five complete sequences and five
-noncanonical InShot derivatives. The
-[`2026-08-29 sidecar`](Standard_Time_Lapses/Provenance/2026-08-29/fragment_sequence_relationships.csv)
-has 19 canonical fragments across four complete sequences and no derivative
-rows. The
-[`2026-08-30 sidecar`](Standard_Time_Lapses/Provenance/2026-08-30/fragment_sequence_relationships.csv)
-has 39 canonical fragments across five complete sequences and no derivative
-rows. The
-[`2026-08-31 sidecar`](Standard_Time_Lapses/Provenance/2026-08-31/fragment_sequence_relationships.csv)
-has 32 canonical fragments across four complete sequences and no derivative
-rows. The
 [`2026-09-01 sidecar`](Standard_Time_Lapses/Provenance/2026-09-01/fragment_sequence_relationships.csv)
 has 13 canonical fragments across two complete sequences and no derivative
-rows. In all five, `fragment_set_label` is a descriptive grouping label, not a
-global `work_id`. The nested derivative payloads are not included in the 616
-active rows or the active byte and duration totals.
-The protocol's capture orientation and a file's stored pixel orientation are
-different concepts. The `orientation`, `width_px`, and `height_px` metadata
-describe the published encoded file. Historical canonicalization may include a
-rotation, crop, or transcode; those transformations are documented only where
-evidence currently exists and must not be inferred from dimensions alone.
-The July 13, 2025 protocol boundary is explicitly encoded in canonical
-metadata. It supports era-aware comparison of repeated physical-media practice,
-but it is an acquisition change, not a skill-change label. Differences across
-that boundary may reflect capture conditions as well as practice development.
-## Annotation State
-Session-level descriptive and provenance metadata are curated by the creator
-from the physical practice, filenames, file properties, and retained historical
-evidence. This is the scope of `annotations_creators: expert-generated`; it does
-not mean that frame-level task labels exist.
-The videos themselves are unannotated. Processing history varies and is not
-uniformly documented. The release does not provide:
-- frame-level bounding boxes or segmentation masks
-- hand, pen-tip, pose, or stroke labels
-- aesthetic or quality scores
-- imposed stylistic classifications
-- calibrated physical trajectories
-- original capture timestamps for individual time-lapse frames
-Researchers may derive annotations, but derived labels should identify the
-source `record_id` and pinned repository revision.
-## Intended and Unsupported Uses
-### Reasonable uses in the current release
-- archival and drawing-process research
-- qualitative within-creator analysis of practice and skill development across
-  repeated physical-media sessions
-- self-supervised video representation experiments
-- frame-change, scene, and workspace analysis
-- development of annotation and tracking methods
-### Uses requiring additional validation or calibration
-- hand or pen-tip tracking
-- optical-flow comparison across acquisition eras
-- temporal behavior analysis
-- real-world trajectory, velocity, acceleration, or motor-control measurement
-The release does not provide confirmed per-record capture intervals,
-acceleration factors, source-frame timestamps, camera calibration, or
-pixel-to-physical coordinate mapping. The nominal Standard interval alone is
-not calibrated real-time evidence.
-### Not validated
-- population-level claims about artists or drawing behavior
-- clinical, biometric, authorship, or identity inference
-- a leakage-safe training or evaluation benchmark
-- commercial use outside the CC BY-NC 4.0 terms
-## Limitations and Sources of Bias
-- The archive documents one creator and one evolving practice.
-- Current public video coverage begins in 2024, not 2012.
-- The standard and pre-standard tiers have substantially different historical
-  descriptive/provenance completeness and acquisition conditions.
-- The workspace can contain hands, tools, phones, tablets, reference material,
-  and other objects that may create visual shortcuts or occlusion.
-- Stored resolution and frame rate do not establish physical or temporal
-  calibration.
-- Large files make exhaustive inspection and replication expensive.
-- No official leakage-safe split exists.
-## Rights, Privacy, and Audio
-The creator confirms ownership of the published video files and depicted
-creator-owned drawings. Material that cannot pass the ownership and provenance
-review is not part of the active public index and is not distributed by this
-release. This statement does not independently grant rights in incidental
-third-party material that may appear on screens, in references, or in captured
-audio.
 Most active indexed videos at this revision contain an audio stream (485 of
-616, or 78.7%). `has_audio` records stream presence only; it does not establish
-that the stream contains meaningful signal. Users are responsible for reviewing
-audio, visible screens, references, reflections, tattoos, and other potentially
-identifying or third-party content before redistribution or model release. A
-future proxy release should remove audio by default while preserving the
-archival video objects.
-## Access and Reproducibility
-The active 616-video release contains 2,062,483,711,146 bytes of video
-(approximately 2.06 TB, or 1.87 TiB). Canonical files are often several
-gigabytes each, so users should select records through `metadata.csv` before
-downloading video.
-### Bandwidth-safe Quick Start
-Install Hugging Face Datasets, stream the archive, and disable decoding while
-selecting records:
-```python
-from datasets import Video, load_dataset
-dataset = load_dataset(
-    "maxwellinked/time-lapse-artifacts",
-    "canonical",
-    split="archive",
-    streaming=True,
-)
-metadata = dataset.cast_column("video", Video(decode=False))
-first = next(iter(metadata))
-print(first["video"]["path"], first["tool"], first["medium"])
-```
-The CSV contract names the repository path column `file_name`. When a declared
-configuration is loaded, Hugging Face resolves that reserved metadata-file
-column against the included MP4 paths and exposes the typed feature as `video`.
-That is why the example uses `first["video"]` rather than
-`first["file_name"]`.
-This exposes the complete metadata schema without transferring video bytes.
-Default decoded row access additionally requires `torchcodec` and a compatible
-video-decoding stack. Use `streaming=True` unless a full archive download is
-intentional.
-Use `"pre_standard"` as the configuration name to stream the earlier tier.
-### Verify the Published Payloads
-`SHA256SUMS` contains the ordinary byte-level SHA-256 of every published MP4
-and ZIP payload. It is a portable fixity manifest, independent of Hugging Face
-Xet storage, and is not encryption. The manifest intentionally excludes
-documentation, scripts, CSV indexes, and itself.
-After downloading the complete archive, hash all payload bytes and compare
-them with the manifest:
-```bash
-python tools/validate_sha256sums.py SHA256SUMS --verify-root .
-```
-To validate complete manifest coverage against a pinned Hub inventory without
-downloading roughly 2 TB of media:
-```bash
-python tools/validate_sha256sums.py SHA256SUMS \
-  --repo-json repo_api_blobs.json \
-  --revision "<40-hex-commit>"
-```
-The inventory must come from that exact immutable revision with blob metadata
-enabled. This check compares every manifest digest with the LFS-compatible
-content SHA-256 and requires an exact path match for every `.mp4` and `.zip`.
-### Download and Verify One Record
-Install `huggingface_hub`, then use the included helper with a stable
-`record_id`:
-```bash
-python -m pip install huggingface_hub
-```
-The helper resolves the requested revision to an immutable commit, checks the
-indexed byte size and Xet identity against the pinned Hub headers, and reports
-the ordinary LFS-compatible SHA-256 separately.
-Check a record without downloading its video:
-```bash
-python tools/download_verified.py tla-a66bdad6c903b89f --check-only
-```
-Download that record and verify its local byte size and SHA-256:
-```bash
-python tools/download_verified.py tla-a66bdad6c903b89f \
-  --revision "<commit-or-tag>" \
-  --output-dir downloads
-```
-`hub_xet_hash` is an Xet file ID, not the SHA-256 of the downloaded bytes. The
-helper verifies both identities without conflating them. Video downloads may
-be many gigabytes; use `--check-only` first.
-For reproducible work:
-1. Pin a repository commit or release tag.
-2. Record the selected `record_id` values.
-3. Preserve the selected entries from `SHA256SUMS` and the published
-   `hub_xet_hash` values; they are distinct identities.
-4. State whether audio was retained.
-5. Document all rotation, crop, sampling, decoding, and proxy-generation steps.
-Run the included validator before publishing a metadata change:
-```bash
-python tools/validate_metadata.py metadata.csv \
-  --pre-standard-metadata Pre_Standard_Time_Lapses/metadata.csv
-```
-`tools/enrich_prestandard.py` reproduces the Pre-Standard technical fields
-from a pinned Hub inventory and MP4 container headers. It uses HTTP range
-requests through FFmpeg; it does not intentionally download complete videos.
-`tools/capture_hub_inventory.py` records the corresponding Xet file IDs from
-resolve headers without following redirects or transferring video payloads.
-The v0.2 index can be regenerated from the pinned 335-row source index plus the
-three audited additions:
-```bash
-python tools/repair_metadata.py source_metadata.csv metadata.csv \
-  --additions tools/metadata_additions_v0.2.csv
-```
-## Versioning
-The repository is under active construction. Record identity is carried by
-`record_id`; a filename may be corrected without creating a new conceptual
-record. Content replacement must retain provenance and should receive a new
-content hash.
-See `CHANGELOG.md` for release-level changes.
-## Documentation
-- `metadata.csv` — canonical machine-readable index
-- `Pre_Standard_Time_Lapses/metadata.csv` — active pre-standard public index
-- `SHA256SUMS` — ordinary SHA-256 for every published MP4 and ZIP payload
-- `LICENSE` — CC BY-NC 4.0 notice and rights-scope qualification
-- `SCHEMA.md` — filename and metadata contracts
-- `Archive_Specifications.md` — acquisition specifications and known gaps
-- `VALIDATION.md` — validation scope and current results
-- `VIEWER_MIGRATION.md` — current Viewer configuration and verification
-  invariants
-- `RELEASE_MANIFEST.json` — historical v0.2.0 release-candidate manifest; it
-  does not describe current `main` or provide checksums for the video payloads
-- `tools/` — inventory capture, verified download, checksum, enrichment, and
-  validation helpers
-- `Standard_Time_Lapses/Provenance/` — historical evidence and dated
-  fragment-sequence relationships
-- `Physical_References/` — physical-reference relationship schema, manifest,
-  and sidecar
-## Citation
-Until a DOI-backed release is available, cite the dataset and pinned revision:
-```bibtex
-@dataset{maxwellinked_time_lapse_artifacts_2026,
-  author    = {maxwellinked},
-  title     = {time-lapse-artifacts},
-  year      = {2026},
-  publisher = {Hugging Face},
-  url       = {https://huggingface.co/datasets/maxwellinked/time-lapse-artifacts},
-  note      = {Active construction release; include the repository revision used}
-}
-```
-## License
-The dataset is released under **CC BY-NC 4.0**. The license applies only to
-material for which the licensor holds the necessary rights. Users must conduct
-their own review of incidental third-party content and downstream use.

+---
+license: cc-by-nc-4.0
+pretty_name: Time-Lapse Artifacts
+annotations_creators:
+- expert-generated
+source_datasets:
+- original
+size_categories:
+- n<1K
+task_categories:
+- feature-extraction
+tags:
+- drawing
+- longitudinal-study
+- traditional-art
+- provenance
+- single-subject
+- video
+- computer-vision
+- time-lapse
+- human-motion
+dataset_info:
+- config_name: canonical
+  features:
+  - name: video
+    dtype: video
+  - name: record_id
+    dtype: large_string
+  - name: collection_tier
+    dtype: large_string
+  - name: is_canonical
+    dtype: bool
+  - name: acquisition_protocol_version
+    dtype: large_string
+  - name: date
+    dtype: large_string
+  - name: time
+    dtype: large_string
+  - name: tool
+    dtype: large_string
+  - name: medium
+    dtype: large_string
+  - name: support
+    dtype: large_string
+  - name: dimensions
+    dtype: large_string
+  - name: duration_seconds
+    dtype: float64
+  - name: width_px
+    dtype: int64
+  - name: height_px
+    dtype: int64
+  - name: orientation
+    dtype: large_string
+  - name: encoded_frame_rate
+    dtype: float64
+  - name: video_codec
+    dtype: large_string
+  - name: pixel_format
+    dtype: large_string
+  - name: container
+    dtype: large_string
+  - name: has_audio
+    dtype: bool
+  - name: hub_xet_hash
+    dtype: large_string
+  - name: original_filename
+    dtype: large_string
+  - name: provenance_status
+    dtype: large_string
+  - name: legacy_provenance_path
+    dtype: large_string
+  - name: legacy_related_references
+    dtype: large_string
+  - name: evidence_method
+    dtype: large_string
+  - name: provenance_reference_duration_delta_seconds
+    dtype: float64
+  - name: size_bytes
+    dtype: int64
+  - name: notes
+    dtype: large_string
+  splits:
+  - name: archive
+    num_examples: 520
+- config_name: pre_standard
+  features:
+  - name: video
+    dtype: video
+  - name: record_id
+    dtype: large_string
+  - name: collection_tier
+    dtype: large_string
+  - name: is_canonical
+    dtype: bool
+  - name: acquisition_protocol_version
+    dtype: large_string
+  - name: date
+    dtype: large_string
+  - name: time
+    dtype: large_string
+  - name: tool
+    dtype: large_string
+  - name: medium
+    dtype: large_string
+  - name: support
+    dtype: large_string
+  - name: dimensions
+    dtype: large_string
+  - name: duration_seconds
+    dtype: float64
+  - name: width_px
+    dtype: int64
+  - name: height_px
+    dtype: int64
+  - name: orientation
+    dtype: large_string
+  - name: encoded_frame_rate
+    dtype: float64
+  - name: video_codec
+    dtype: large_string
+  - name: pixel_format
+    dtype: large_string
+  - name: container
+    dtype: large_string
+  - name: has_audio
+    dtype: bool
+  - name: hub_xet_hash
+    dtype: large_string
+  - name: original_filename
+    dtype: large_string
+  - name: provenance_status
+    dtype: large_string
+  - name: legacy_provenance_path
+    dtype: large_string
+  - name: legacy_related_references
+    dtype: large_string
+  - name: evidence_method
+    dtype: large_string
+  - name: provenance_reference_duration_delta_seconds
+    dtype: float64
+  - name: size_bytes
+    dtype: int64
+  - name: notes
+    dtype: large_string
+  splits:
+  - name: archive
+    num_examples: 128
+configs:
+- config_name: canonical
+  default: true
+  features:
+  - name: video
+    dtype: video
+  - name: record_id
+    dtype: large_string
+  - name: collection_tier
+    dtype: large_string
+  - name: is_canonical
+    dtype: bool
+  - name: acquisition_protocol_version
+    dtype: large_string
+  - name: date
+    dtype: large_string
+  - name: time
+    dtype: large_string
+  - name: tool
+    dtype: large_string
+  - name: medium
+    dtype: large_string
+  - name: support
+    dtype: large_string
+  - name: dimensions
+    dtype: large_string
+  - name: duration_seconds
+    dtype: float64
+  - name: width_px
+    dtype: int64
+  - name: height_px
+    dtype: int64
+  - name: orientation
+    dtype: large_string
+  - name: encoded_frame_rate
+    dtype: float64
+  - name: video_codec
+    dtype: large_string
+  - name: pixel_format
+    dtype: large_string
+  - name: container
+    dtype: large_string
+  - name: has_audio
+    dtype: bool
+  - name: hub_xet_hash
+    dtype: large_string
+  - name: original_filename
+    dtype: large_string
+  - name: provenance_status
+    dtype: large_string
+  - name: legacy_provenance_path
+    dtype: large_string
+  - name: legacy_related_references
+    dtype: large_string
+  - name: evidence_method
+    dtype: large_string
+  - name: provenance_reference_duration_delta_seconds
+    dtype: float64
+  - name: size_bytes
+    dtype: int64
+  - name: notes
+    dtype: large_string
+  data_files:
+  - split: archive
+    path:
+    - metadata.csv
+    - Standard_Time_Lapses/*.mp4
+- config_name: pre_standard
+  features:
+  - name: video
+    dtype: video
+  - name: record_id
+    dtype: large_string
+  - name: collection_tier
+    dtype: large_string
+  - name: is_canonical
+    dtype: bool
+  - name: acquisition_protocol_version
+    dtype: large_string
+  - name: date
+    dtype: large_string
+  - name: time
+    dtype: large_string
+  - name: tool
+    dtype: large_string
+  - name: medium
+    dtype: large_string
+  - name: support
+    dtype: large_string
+  - name: dimensions
+    dtype: large_string
+  - name: duration_seconds
+    dtype: float64
+  - name: width_px
+    dtype: int64
+  - name: height_px
+    dtype: int64
+  - name: orientation
+    dtype: large_string
+  - name: encoded_frame_rate
+    dtype: float64
+  - name: video_codec
+    dtype: large_string
+  - name: pixel_format
+    dtype: large_string
+  - name: container
+    dtype: large_string
+  - name: has_audio
+    dtype: bool
+  - name: hub_xet_hash
+    dtype: large_string
+  - name: original_filename
+    dtype: large_string
+  - name: provenance_status
+    dtype: large_string
+  - name: legacy_provenance_path
+    dtype: large_string
+  - name: legacy_related_references
+    dtype: large_string
+  - name: evidence_method
+    dtype: large_string
+  - name: provenance_reference_duration_delta_seconds
+    dtype: float64
+  - name: size_bytes
+    dtype: int64
+  - name: notes
+    dtype: large_string
+  data_files:
+  - split: archive
+    path:
+    - Pre_Standard_Time_Lapses/metadata.csv
+    - Pre_Standard_Time_Lapses/*.mp4
+---
+# time-lapse-artifacts
+648 time-lapse recordings of one artist's traditional drawing practice across
+nearly two years (September 2024–September 2, 2026), with standardized acquisition
+since July 13, 2025. Across 2,072,858,619,084 bytes (approximately 2.07 TB) of
+video, the archive follows the same artist working in physical media—including
+pencil, ballpoint pen, fountain pen, brush, graphite, and ink—on fixed-format
+paper and illustration board.
+The release combines 520 canonical Standard videos and 128 earlier
+Pre-Standard recordings. Every active indexed video has a persistent record
+ID, content hash, byte size, and encoded-stream metadata; historical session
+and provenance fields remain less complete in the Pre-Standard tier.
+**Unit of record:** each active metadata row identifies one published MP4
+video object. A row does not necessarily represent one drawing, one
+uninterrupted session, or a complete start-to-finish process. When documented,
+fragment-sequence and physical-reference relationships remain in separate
+revision-pinned sidecars joined by `record_id`; absent relationships remain
+unknown.
+**[Browse the Standard recordings](https://maxwellinked.github.io/time-lapse-artifacts/)**
+through a searchable public browser with muted motion previews. The browser is
+a dynamic presentation layer and may lag the current Hugging Face dataset.
+Hugging Face remains authoritative for media, record identities, and
+machine-readable metadata.
+In this dataset, provenance refers to the documented relationship between a
+physical drawing and its time-lapse record, rather than to histories of
+ownership or sale.
+An earlier holding associated with the 2012–2016 archival scope comprises
+2,381 locally held real-time recordings totaling 9,060,310,121,597 bytes
+(approximately 9.06 TB). It consists primarily of uploaded 1080p drawing
+videos, with some livestream-derived material. Its [file-level holdings and SHA-256 manifest](Earlier_Archive_2012_2016/HOLDINGS_MANIFEST.json)
+is published in this repository; the media itself is not hosted and remains
+excluded from the current 648-record release totals.
+## Snapshot and Coverage
+The table below describes this revision. Batch-level history is maintained in
+[`CHANGELOG.md`](CHANGELOG.md). The immutable `v0.3.0` tag remains a 467-row
+historical release and does not describe current `main`.
+| Collection tier | Published MP4s | Indexed rows | Date coverage | Metadata state |
+| --- | ---: | ---: | --- | --- |
+| `standard` | 520 direct files | 520 | 2025-07-13–2026-09-02 | Complete core technical metadata for every direct Standard file |
+| `pre_standard` | 128 | 128 | 2024-09-17–2025-07-09, plus 9 unknown dates | Complete core technical metadata; historical descriptive and provenance gaps remain |
+| [Earlier archive](Earlier_Archive_2012_2016/README.md) (metadata-only holding) | 0 hosted videos | 0 dataset rows; 2,381 fixity entries | Historical scope label 2012–2016 | 9,060,310,121,597 bytes held offline; file-level SHA-256 manifest published |
+The Hub configurations use the split name `archive`. No official
+train/validation/test partition has been defined.
+## Viewer and Metadata Discovery
+The release exposes two explicit configurations so metadata-complete canonical
+records are not silently mixed with historically less complete records:
+- `canonical/archive` is the default and loads root `metadata.csv` with the 520
+  direct files in `Standard_Time_Lapses/`
+- `pre_standard/archive` loads `Pre_Standard_Time_Lapses/metadata.csv` with the
+  128 direct files in that folder
+Each configuration has the same declared 29-column schema. Stored dimensions
+and byte sizes are nullable integers, `has_audio` is a nullable boolean, and
+encoded frame rate remains a float because historical encodings include
+fractional reported rates. Undocumented values load as null rather than as
+zero or false. Both indexes declare tier membership directly: the root index sets
+`collection_tier = standard` and `is_canonical = true`; the Pre-Standard CSV
+sets `collection_tier = pre_standard` and `is_canonical = false`.
+Published-index completeness is defined by the 520 rows in `canonical/archive`
+plus the 128 rows in `pre_standard/archive` and their generated Parquet
+exports. Hugging Face's separate column Statistics job is an auxiliary,
+asynchronous surface; its availability is not used to claim or reject
+row-level completeness.
+The configuration lists the two active `metadata.csv` files and only direct
+MP4 paths in `Standard_Time_Lapses/` and `Pre_Standard_Time_Lapses/`. It does
+not use a recursive canonical glob, so the nested
+`Standard_Time_Lapses/Provenance/` subtree is excluded.
+## Overview
+`time-lapse-artifacts` documents analog drawing processes across different
+recording periods and acquisition conditions. Video is the primary published
+evidence. Metadata identifies, organizes, compares, and documents recordings
+without imposing aesthetic scores or stylistic labels.
+The collection is a single-creator longitudinal archive. This makes it useful
+for studying within-practice change, but it does not represent artists,
+materials, studios, or drawing practices broadly.
+## Repository Structure
+### `Standard_Time_Lapses/`
+The directory contains 520 direct MP4 files. `metadata.csv` is their complete
+machine-readable canonical index: every direct file has one validated row with
+core technical metadata. Direct placement alone is not sufficient for future
+additions; metadata and release validation are required.
+Each canonical metadata row now includes:
+- a persistent `record_id`
+- `collection_tier = standard`
+- `is_canonical = true`
+- `acquisition_protocol_version = standard-2025-07-13`
+- descriptive session fields
+- encoded video properties
+- repository content hash and size
+- provenance fields where documented
+Files use a structured filename convention described in `SCHEMA.md`. A
+filename is descriptive, but it is not the stable identity of a record;
+external references should use `record_id`.
+### `Standard_Time_Lapses/Provenance/`
+This subtree contains supporting historical records and retained exceptions.
+It is not part of the canonical record set.
+`2026-07-31/` preserves the completed provenance release, including mappings
+between historical `Series_9x12` filenames and canonical records. The former
+full duplicate video snapshot is not retained. Relationships are preserved
+through mappings, hashes, metadata, and repository history. See the
+[provenance navigation index](Standard_Time_Lapses/Provenance/README.md).
+### `Pre_Standard_Time_Lapses/`
+These 128 recordings predate the standard acquisition protocol. They are
+published for archival continuity but are not interchangeable with canonical
+standard records. Each now has a stable `record_id`, exact Hub content hash and
+size, playback duration, stored dimensions and orientation, frame rate, codec,
+pixel format, container, and audio-stream presence. Historical dates, times,
+materials, and provenance remain incomplete where evidence is unavailable.
+Missing values must not be interpreted as zero, false, or evidence that a
+property was absent.
+The folder-local `metadata.csv` is the active index for these 128 videos and is
+loaded by the `pre_standard/archive` configuration. It follows the same
+declared 29-field schema as the canonical index while leaving undocumented
+historical fields empty.
+Material that does not meet the archive's ownership and provenance threshold
+is excluded from both the published media and the active metadata index.
+### `Earlier_Archive_2012_2016/`
+An earlier holding of 2,381 files totaling 9,060,310,121,597 bytes is held
+outside the hosted-media release. It consists primarily of uploaded 1080p
+drawing videos, with some livestream-derived material. The repository
+publishes a [file-level holdings and SHA-256 manifest](Earlier_Archive_2012_2016/HOLDINGS_MANIFEST.json),
+not the media itself. These files remain excluded from active dataset rows and
+published media totals. References to 2012–2016 describe the historical scope
+label and do not assert a capture year for every listed file.
+## Metadata and Provenance
+The metadata distinguishes documented facts, established historical
+relationships, and unresolved information. Evidence may include:
+- exact file/blob identity
+- original filenames and repository paths
+- file sizes and hashes
+- duration comparison
+- visual continuity across recordings
+- documented physical references
+- repository commit history
+Uncertain relationships are not promoted to verified relationships solely
+because dates or filenames look similar.
+The active CSV files and live Viewer use semicolons for multiple `tool` and
+`medium` values, for example `Pencil;FountainPen` and `Graphite;Ink`. A pipe
+(`|`) is **not** a valid separator in v0.2. The two fields are independent
+observed-value lists; equal list lengths and positional pairing are not
+guaranteed. See `SCHEMA.md`.
+The Standard protocol documents a nominal 0.2-second capture interval. This is
+a protocol-level default, not a confirmed per-record measurement, and it does
+not establish a calibrated real-time basis. `encoded_frame_rate` remains
+encoded playback rate, not original drawing-time sampling, and must not be used
+to infer real drawing time unless separately documented.
+### Physical-reference relationship layer
+[`Physical_References/endpoint_references.csv`](Physical_References/endpoint_references.csv)
+links 309 Standard video records to owner-confirmed photographs of their
+physical drawings through persistent `record_id` values and the pinned source
+revision. It is a separate derived relationship table and does not alter the
+29-field canonical video index.
+Version 0.1 records 52 confirmed endpoint photographs, one longitudinal
+continuation, 232 owner-confirmed record references whose exact endpoint state
+is not separately asserted, and 24 two-sided references. The photographs are
+not bundled in this release. Their reviewed filenames and available hashes
+preserve relationship evidence without implying that the media are publicly
+downloadable. See the [sidecar schema](Physical_References/SCHEMA.md) and
+[manifest](Physical_References/MANIFEST.json).
+## Acquisition and Stored-Video Orientation
+The acquisition protocol effective July 13, 2025 is documented in
+`Archive_Specifications.md`. Framelapse source fragments remain unchanged
+acquisition evidence. For reviewed fragment ingestions, a drawing may be
+represented canonically either by one selected chronological assembly or by a
+complete, verified `RecNN` sequence of unchanged source fragments. Grouping,
+order, completeness, and noncanonical derivative coverage for those ingestions
+remain in separate dated relationship manifests; the active 29-field metadata
+schema is unchanged. The manifests do not backfill every historical `RecNN`
+record. Outside them, `RecNN` establishes recording order only, and any
+grouping or completeness claim is limited to evidence explicitly recorded in
+`notes` or other documentation. A documented 4K/30-fps InShot processing
+profile remains a candidate and does not retroactively redefine existing
+records. See the
+[capture and ingest protocol](Physical_References/CAPTURE_AND_INGEST_PROTOCOL.md).
+The dated relationship sidecars preserve each ingestion as a separate pinned
+observation layer. The
+[`2026-08-27 sidecar`](Standard_Time_Lapses/Provenance/2026-08-27/fragment_sequence_relationships.csv)
+has 27 rows: 22 canonical fragments across five complete sequences and five
+noncanonical InShot derivatives. The
+[`2026-08-29 sidecar`](Standard_Time_Lapses/Provenance/2026-08-29/fragment_sequence_relationships.csv)
+has 19 canonical fragments across four complete sequences and no derivative
+rows. The
+[`2026-08-30 sidecar`](Standard_Time_Lapses/Provenance/2026-08-30/fragment_sequence_relationships.csv)
+has 39 canonical fragments across five complete sequences and no derivative
+rows. The
+[`2026-08-31 sidecar`](Standard_Time_Lapses/Provenance/2026-08-31/fragment_sequence_relationships.csv)
+has 32 canonical fragments across four complete sequences and no derivative
+rows. The
 [`2026-09-01 sidecar`](Standard_Time_Lapses/Provenance/2026-09-01/fragment_sequence_relationships.csv)
 has 13 canonical fragments across two complete sequences and no derivative
+rows. The
+[`2026-09-02 sidecar`](Standard_Time_Lapses/Provenance/2026-09-02/fragment_sequence_relationships.csv)
+has 32 canonical fragments across three complete sequences and no derivative
+rows. In all six, `fragment_set_label` is a descriptive grouping label, not a
+global `work_id`. The nested derivative payloads are not included in the 648
+active rows or the active byte and duration totals.
+The protocol's capture orientation and a file's stored pixel orientation are
+different concepts. The `orientation`, `width_px`, and `height_px` metadata
+describe the published encoded file. Historical canonicalization may include a
+rotation, crop, or transcode; those transformations are documented only where
+evidence currently exists and must not be inferred from dimensions alone.
+The July 13, 2025 protocol boundary is explicitly encoded in canonical
+metadata. It supports era-aware comparison of repeated physical-media practice,
+but it is an acquisition change, not a skill-change label. Differences across
+that boundary may reflect capture conditions as well as practice development.
+## Annotation State
+Session-level descriptive and provenance metadata are curated by the creator
+from the physical practice, filenames, file properties, and retained historical
+evidence. This is the scope of `annotations_creators: expert-generated`; it does
+not mean that frame-level task labels exist.
+The videos themselves are unannotated. Processing history varies and is not
+uniformly documented. The release does not provide:
+- frame-level bounding boxes or segmentation masks
+- hand, pen-tip, pose, or stroke labels
+- aesthetic or quality scores
+- imposed stylistic classifications
+- calibrated physical trajectories
+- original capture timestamps for individual time-lapse frames
+Researchers may derive annotations, but derived labels should identify the
+source `record_id` and pinned repository revision.
+## Intended and Unsupported Uses
+### Reasonable uses in the current release
+- archival and drawing-process research
+- qualitative within-creator analysis of practice and skill development across
+  repeated physical-media sessions
+- self-supervised video representation experiments
+- frame-change, scene, and workspace analysis
+- development of annotation and tracking methods
+### Uses requiring additional validation or calibration
+- hand or pen-tip tracking
+- optical-flow comparison across acquisition eras
+- temporal behavior analysis
+- real-world trajectory, velocity, acceleration, or motor-control measurement
+The release does not provide confirmed per-record capture intervals,
+acceleration factors, source-frame timestamps, camera calibration, or
+pixel-to-physical coordinate mapping. The nominal Standard interval alone is
+not calibrated real-time evidence.
+### Not validated
+- population-level claims about artists or drawing behavior
+- clinical, biometric, authorship, or identity inference
+- a leakage-safe training or evaluation benchmark
+- commercial use outside the CC BY-NC 4.0 terms
+## Limitations and Sources of Bias
+- The archive documents one creator and one evolving practice.
+- Current public video coverage begins in 2024, not 2012.
+- The standard and pre-standard tiers have substantially different historical
+  descriptive/provenance completeness and acquisition conditions.
+- The workspace can contain hands, tools, phones, tablets, reference material,
+  and other objects that may create visual shortcuts or occlusion.
+- Stored resolution and frame rate do not establish physical or temporal
+  calibration.
+- Large files make exhaustive inspection and replication expensive.
+- No official leakage-safe split exists.
+## Rights, Privacy, and Audio
+The creator confirms ownership of the published video files and depicted
+creator-owned drawings. Material that cannot pass the ownership and provenance
+review is not part of the active public index and is not distributed by this
+release. This statement does not independently grant rights in incidental
+third-party material that may appear on screens, in references, or in captured
+audio.
 Most active indexed videos at this revision contain an audio stream (485 of
+648, or 74.8%). `has_audio` records stream presence only; it does not establish
+that the stream contains meaningful signal. Users are responsible for reviewing
+audio, visible screens, references, reflections, tattoos, and other potentially
+identifying or third-party content before redistribution or model release. A
+future proxy release should remove audio by default while preserving the
+archival video objects.
+## Access and Reproducibility
+The active 648-video release contains 2,072,858,619,084 bytes of video
+(approximately 2.07 TB, or 1.89 TiB). Canonical files are often several
+gigabytes each, so users should select records through `metadata.csv` before
+downloading video.
+### Bandwidth-safe Quick Start
+Install Hugging Face Datasets, stream the archive, and disable decoding while
+selecting records:
+```python
+from datasets import Video, load_dataset
+dataset = load_dataset(
+    "maxwellinked/time-lapse-artifacts",
+    "canonical",
+    split="archive",
+    streaming=True,
+)
+metadata = dataset.cast_column("video", Video(decode=False))
+first = next(iter(metadata))
+print(first["video"]["path"], first["tool"], first["medium"])
+```
+The CSV contract names the repository path column `file_name`. When a declared
+configuration is loaded, Hugging Face resolves that reserved metadata-file
+column against the included MP4 paths and exposes the typed feature as `video`.
+That is why the example uses `first["video"]` rather than
+`first["file_name"]`.
+This exposes the complete metadata schema without transferring video bytes.
+Default decoded row access additionally requires `torchcodec` and a compatible
+video-decoding stack. Use `streaming=True` unless a full archive download is
+intentional.
+Use `"pre_standard"` as the configuration name to stream the earlier tier.
+### Verify the Published Payloads
+`SHA256SUMS` contains the ordinary byte-level SHA-256 of every published MP4
+and ZIP payload. It is a portable fixity manifest, independent of Hugging Face
+Xet storage, and is not encryption. The manifest intentionally excludes
+documentation, scripts, CSV indexes, and itself.
+After downloading the complete archive, hash all payload bytes and compare
+them with the manifest:
+```bash
+python tools/validate_sha256sums.py SHA256SUMS --verify-root .
+```
+To validate complete manifest coverage against a pinned Hub inventory without
+downloading roughly 2 TB of media:
+```bash
+python tools/validate_sha256sums.py SHA256SUMS \
+  --repo-json repo_api_blobs.json \
+  --revision "<40-hex-commit>"
+```
+The inventory must come from that exact immutable revision with blob metadata
+enabled. This check compares every manifest digest with the LFS-compatible
+content SHA-256 and requires an exact path match for every `.mp4` and `.zip`.
+### Download and Verify One Record
+Install `huggingface_hub`, then use the included helper with a stable
+`record_id`:
+```bash
+python -m pip install huggingface_hub
+```
+The helper resolves the requested revision to an immutable commit, checks the
+indexed byte size and Xet identity against the pinned Hub headers, and reports
+the ordinary LFS-compatible SHA-256 separately.
+Check a record without downloading its video:
+```bash
+python tools/download_verified.py tla-a66bdad6c903b89f --check-only
+```
+Download that record and verify its local byte size and SHA-256:
+```bash
+python tools/download_verified.py tla-a66bdad6c903b89f \
+  --revision "<commit-or-tag>" \
+  --output-dir downloads
+```
+`hub_xet_hash` is an Xet file ID, not the SHA-256 of the downloaded bytes. The
+helper verifies both identities without conflating them. Video downloads may
+be many gigabytes; use `--check-only` first.
+For reproducible work:
+1. Pin a repository commit or release tag.
+2. Record the selected `record_id` values.
+3. Preserve the selected entries from `SHA256SUMS` and the published
+   `hub_xet_hash` values; they are distinct identities.
+4. State whether audio was retained.
+5. Document all rotation, crop, sampling, decoding, and proxy-generation steps.
+Run the included validator before publishing a metadata change:
+```bash
+python tools/validate_metadata.py metadata.csv \
+  --pre-standard-metadata Pre_Standard_Time_Lapses/metadata.csv
+```
+`tools/enrich_prestandard.py` reproduces the Pre-Standard technical fields
+from a pinned Hub inventory and MP4 container headers. It uses HTTP range
+requests through FFmpeg; it does not intentionally download complete videos.
+`tools/capture_hub_inventory.py` records the corresponding Xet file IDs from
+resolve headers without following redirects or transferring video payloads.
+The v0.2 index can be regenerated from the pinned 335-row source index plus the
+three audited additions:
+```bash
+python tools/repair_metadata.py source_metadata.csv metadata.csv \
+  --additions tools/metadata_additions_v0.2.csv
+```
+## Versioning
+The repository is under active construction. Record identity is carried by
+`record_id`; a filename may be corrected without creating a new conceptual
+record. Content replacement must retain provenance and should receive a new
+content hash.
+See `CHANGELOG.md` for release-level changes.
+## Documentation
+- `metadata.csv` — canonical machine-readable index
+- `Pre_Standard_Time_Lapses/metadata.csv` — active pre-standard public index
+- `SHA256SUMS` — ordinary SHA-256 for every published MP4 and ZIP payload
+- `LICENSE` — CC BY-NC 4.0 notice and rights-scope qualification
+- `SCHEMA.md` — filename and metadata contracts
+- `Archive_Specifications.md` — acquisition specifications and known gaps
+- `VALIDATION.md` — validation scope and current results
+- `VIEWER_MIGRATION.md` — current Viewer configuration and verification
+  invariants
+- `RELEASE_MANIFEST.json` — historical v0.2.0 release-candidate manifest; it
+  does not describe current `main` or provide checksums for the video payloads
+- `tools/` — inventory capture, verified download, checksum, enrichment, and
+  validation helpers
+- `Standard_Time_Lapses/Provenance/` — historical evidence and dated
+  fragment-sequence relationships
+- `Physical_References/` — physical-reference relationship schema, manifest,
+  and sidecar
+## Citation
+Until a DOI-backed release is available, cite the dataset and pinned revision:
+```bibtex
+@dataset{maxwellinked_time_lapse_artifacts_2026,
+  author    = {maxwellinked},
+  title     = {time-lapse-artifacts},
+  year      = {2026},
+  publisher = {Hugging Face},
+  url       = {https://huggingface.co/datasets/maxwellinked/time-lapse-artifacts},
+  note      = {Active construction release; include the repository revision used}
+}
+```
+## License
+The dataset is released under **CC BY-NC 4.0**. The license applies only to
+material for which the licensor holds the necessary rights. Users must conduct
+their own review of incidental third-party content and downstream use.

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+# Recording relationship provenance — 2026-09-02
+This dated provenance layer documents three creator-confirmed complete source
+sequences represented by 32 unchanged canonical Framelapse source recordings
+made across September 1–2, 2026.
+No concatenated or transcoded derivative is included in this ingestion.
+`fragment_sequence_relationships.csv` contains one canonical-fragment row per
+recording. Its three sets contain 12, 9, and 11 contiguous recordings. The
+`fragment_set_label` is the shared descriptive canonical filename stem; it is
+not a global `work_id`. Each row carries its persistent `record_id`, sequence
+position and count, ordinary source-file SHA-256, Hub Xet identity, byte size,
+and evidence state.
+The `sha256` column is an ordinary byte-level SHA-256. `hub_xet_hash` is the
+separate Hugging Face Xet identity; the values are not interchangeable. Every
+`source_hub_revision` value pins the immutable metadata-bearing pull-request
+commit against which the sidecar, canonical media, and exact root
+`metadata.csv` bytes were validated. The sidecar is committed afterward and
+deliberately points back to that commit, avoiding a circular self-reference.
+At ingest-audit time, the source files bore canonical archive names. No
+pre-rename device-name mapping was independently retained, so
+`original_filename` remains blank rather than being inferred. The
+creator-confirmed filename labels, grouping, and `RecNN` order are not inferred
+from filesystem dates or MP4 `creation_time` tags. The literal container tag
+`com.android.capture.fps=5.000000` is retained in the row notes without using it
+to infer real drawing time.
+This relationship layer does not change the 29-field active video schema,
+introduce a global `work_id`, backfill historical rows, change
+`standard-2025-07-13`, or create a new dataset version.

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+fragment_set_label,object_role,record_id,file_path,sha256,hub_xet_hash,size_bytes,sequence_position,sequence_count,sequence_completeness,source_record_ids,derivative_coverage,evidence_state,source_hub_revision,notes
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+2026-09-01.0213.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-f92022de10e0e792,Standard_Time_Lapses/2026-09-01.0213.BallpointPen.Ink.Paper.9x12.Rec07.mp4,d560e979a380d3985edb6d175c43ce7d4b6f5e5704b599228cd8f4eb719adb3b,89300c73a2f0a47e8eaaa62e4abc381f5bc79bb4b20933576fb5fb9195861a5e,435578751,7,12,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
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+2026-09-01.0213.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-0b32e0e8155453e2,Standard_Time_Lapses/2026-09-01.0213.BallpointPen.Ink.Paper.9x12.Rec09.mp4,9a04bea9be1f8d156f69a186214b48946b6639ad6351cff07bc9ac719c3268aa,072a7281c32ba34e421fe402c2ce5ce599452cf81a09c8a3e214042e9f3d1191,452341373,9,12,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-01.0213.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-ea32a9a1da6befb7,Standard_Time_Lapses/2026-09-01.0213.BallpointPen.Ink.Paper.9x12.Rec10.mp4,8c773a8ed8a3a4e195d6bc4593d14b654750dc11ef62e2df675e84fc007b7608,07db0f084be4fc784457f4f34e04ad1191fa77dd21ae7b8219c264727f4465a4,476848316,10,12,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
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+2026-09-01.2356.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-a55d1f4ccc0f702f,Standard_Time_Lapses/2026-09-01.2356.BallpointPen.Ink.Paper.9x12.Rec05.mp4,9bb3c5620940756006584ae936c6d1c9962bc620e9e9e74e8637d555ea9bd8b2,011906a33499ab56c17c8c8b170a383525c07ef6468f6d43881700f7256d18e3,437556176,5,9,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-01.2356.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-401f1726ba9f2aed,Standard_Time_Lapses/2026-09-01.2356.BallpointPen.Ink.Paper.9x12.Rec06.mp4,9dbfd466931be4ba54b7d336e3be1fe789493277d21e759bdd2074a5789abddc,fff5379546e4a318cc357f348f0663e00d310e6c6f325fbc0108430d5d2eebdf,459220478,6,9,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-01.2356.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-811a04bd1233342b,Standard_Time_Lapses/2026-09-01.2356.BallpointPen.Ink.Paper.9x12.Rec07.mp4,e802ac5c0c70dd4661d35b842cbbb78b2d3a017c747afd7613958c0d7bff8a81,14750c1468bd3ac1ebbebde8aa115479483d9f55e9fdf706733bcc8f5e570b24,470514785,7,9,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-01.2356.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-c0ebf26e94082e43,Standard_Time_Lapses/2026-09-01.2356.BallpointPen.Ink.Paper.9x12.Rec08.mp4,964acafcf92e5c6b670efe499c324c3d158d0c56b4c07f77d64ae0fa33467249,c9bbc3a58ea2d47b211073cf96687db289b53a5e42a080a6407f6442a7076770,369772206,8,9,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-01.2356.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-211dcffd975c7737,Standard_Time_Lapses/2026-09-01.2356.BallpointPen.Ink.Paper.9x12.Rec09.mp4,a8a7d4337e2d018065b4c8e108f42d78103ee43e0e9eadade9e8877f3679094f,8f46a9839ef71ac739f07c3b15ee54b86d9f15f93fe7567a0b10057866ccc270,343278073,9,9,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-f766bfcd569963c5,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec01.mp4,3670dabdb27a019b9f0153a84c97bca759de90f77d8db9b4dd400c7bcd5015ec,c49749f7036e8840453fb9c8946bbc95f2445edfd16ea37390487270b6851820,238821207,1,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-50eb0821356da91b,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec02.mp4,59c45139750946a15fe9c9f38e4be96a832e5a192365f15abc8170ee07befb04,1d9a2f8be48847f9c35bf70eaafc16d97df9728b07c3310133a4eea7bbe57de3,285246388,2,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-d7e47c3d42a56403,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec03.mp4,825ee7952b56242f5a17dd3cf26b9466fadd338637051633b093ed53112efe4e,0efab1351db898b474c57e9f170e1d4e87b8c2085407b5157e4c4b54cc2ea325,239832948,3,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-8617f3db8d71a151,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec04.mp4,005de8e47f31d7d7059f40f66e8618cda76e5d6502b4257b609c6f593652679d,c8d26ef87583163b63348b00eb0eec8a4acab03e1913fac4778827e527b306e6,271377471,4,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-7eeb039fbdd4ee00,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec05.mp4,bf99cfb79e0a75ae4ca8781c3e7d9aaad2229486ab240083878ff5af37c39561,50a8dcfcfff64c4345028fcc0ef1dd5330473ff2f143a255a4441752571a669f,261744134,5,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-81c1a9727ffea3c3,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec06.mp4,922c6d01dbed66202bf6d723ee038e58f88258c2b7f4f5618318c20caba4f6a9,738c27540f6e43b9c905fd532c1513ab22be31e5b128b08fa49e0590f062132d,282710164,6,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-e26143a32358d010,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec07.mp4,208d7af87ef7db18bbb208ed755ff467514a37e6931b80ef57b9abc122641c35,3d40f2bb672805db6944ae4ce313a39c8a50d323006c3afa37ac9aa3f5a864e8,288701337,7,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-3ebe44bb17ce007a,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec08.mp4,d3a2c72731bd110016df860983bfcb3c370834554cbd5a6ffefa77b3a8bd0c03,5fd0b9dd5113401c14715d0b5b54e185faea49dcb7b9f5dbdeb339218c03dc8f,277526617,8,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-25fddf50105021ed,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec09.mp4,4672670f84801dff25c85ad509a0403a1580b85adbe9e630c49c43a7a45690af,90df19a863ea5ad989817171f391c514336eb84e67c669788d2e1dd39d4ab336,243621287,9,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-d66db2070080cfe3,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec10.mp4,b376685c6958ba1358dd78d54fb56bf5f14be82acd87f1c98d566af58c6fa626,9d2cb9a3c887ce6e2b37f87a018404efd87386fd9b7df08934bbff182cad2920,299950313,10,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."
+2026-09-02.0301.BallpointPen.Ink.Paper.9x12,canonical_fragment,tla-1876f9a959f3fd45,Standard_Time_Lapses/2026-09-02.0301.BallpointPen.Ink.Paper.9x12.Rec11.mp4,3dab68badc06ddd6a828dc1b11dd77fd744892afbcf3ebb7e2e2d997fec11a8a,62ea72919fe7d7cb70ed681d0b10a9196f7c4635d3626330c556c11cfc988737,68680293,11,11,owner_confirmed_complete,,,owner-confirmed; checksum-computed; media-probed; demux-verified; sampled-decode-verified,e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878,"At ingest audit, the source bore its canonical archive filename; an earlier device filename is not documented. Literal container tag com.android.capture.fps=5.000000; no real-time duration inferred."

Standard_Time_Lapses/Provenance/README.md CHANGED Viewed

@@ -1,59 +1,64 @@
-# Standard provenance
-This subtree stores supporting historical evidence and relationship tables. It
-is outside both active video indexes and Dataset Viewer configurations; nested
-placement does not make a media object canonical.
-Each active metadata row continues to identify one published video object.
-Relationship sidecars can group those objects without merging their persistent
-`record_id` values or asserting undocumented drawing- or session-level facts.
-## Dated layers
-- [`2026-07-31/`](2026-07-31/) preserves historical filename-to-record mappings
-  and the pre-rebuild metadata snapshot without retaining the former duplicate
-  video snapshot.
-- [`2026-08-27/`](2026-08-27/README.md) documents 22 canonical fragments across
-  five complete source sequences and five noncanonical InShot derivatives.
-- [`2026-08-29/`](2026-08-29/README.md) documents 19 canonical fragments across
-  four complete source sequences and no derivative payloads.
-- [`2026-08-30/`](2026-08-30/README.md) documents 39 canonical fragments across
-  five complete source sequences and no derivative payloads.
-- [`2026-08-31/`](2026-08-31/README.md) documents 32 canonical fragments across
-  four complete source sequences and no derivative payloads.
 - [`2026-09-01/`](2026-09-01/README.md) documents 13 canonical fragments across
   two complete source sequences and no derivative payloads.
-## Documented fragment sequences
-These are the twenty sets recorded in the five dated relationship sidecars.
-`fragment_set_label` is a descriptive grouping label, not a global `work_id`.
-`owner_confirmed_complete` applies to the canonical source sequence represented
-in that sidecar; it does not establish real drawing time or claim that activity
-outside the retained recordings was captured.
-| Sidecar | `fragment_set_label` | Canonical fragments | Positions | `sequence_completeness` |
-| --- | --- | ---: | --- | --- |
-| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-24.0157.BallpointPen.Ink.Paper.9x12` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
-| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-24.0638.BallpointPen.Ink.Paper.12x9` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
-| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-25.1941.BallpointPen.Ink.Paper.9x12` | 6 | `Rec01`–`Rec06` | `owner_confirmed_complete` |
-| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-26.1229.BallpointPen.Ink.Paper.9x12` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
-| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-27.0856.BallpointPen.Ink.Paper.9x12` | 10 | `Rec01`–`Rec10` | `owner_confirmed_complete` |
-| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-28.0108.BallpointPen.Ink.Paper.9x12` | 10 | `Rec01`–`Rec10` | `owner_confirmed_complete` |
-| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-29.0254.BallpointPen.Ink.Paper.9x12` | 4 | `Rec01`–`Rec04` | `owner_confirmed_complete` |
-| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-29.0602.BallpointPen.Ink.Paper.9x12` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
-| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-29.0716.BallpointPen.Ink.Paper.9x12` | 3 | `Rec01`–`Rec03` | `owner_confirmed_complete` |
-| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-29.1450.BallpointPen.Ink.Paper.9x12` | 9 | `Rec01`–`Rec09` | `owner_confirmed_complete` |
-| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-29.1849.BallpointPen.Ink.Paper.9x12` | 5 | `Rec01`–`Rec05` | `owner_confirmed_complete` |
-| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-30.0022.BallpointPen.Ink.Paper.9x12` | 4 | `Rec01`–`Rec04` | `owner_confirmed_complete` |
-| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-30.1126.FountainPen.Ink.Paper.9x12` | 15 | `Rec01`–`Rec15` | `owner_confirmed_complete` |
-| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-30.1712.BallpointPen.Ink.Paper.9x12` | 6 | `Rec01`–`Rec06` | `owner_confirmed_complete` |
-| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.0009.BallpointPen.Ink.Paper.9x12` | 8 | `Rec01`–`Rec08` | `owner_confirmed_complete` |
-| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.0732.BallpointPen.Ink.Paper.9x12` | 6 | `Rec01`–`Rec06` | `owner_confirmed_complete` |
-| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.1039.BallpointPen.Ink.Paper.9x12` | 7 | `Rec01`–`Rec07` | `owner_confirmed_complete` |
-| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.1212.BallpointPen.Ink.Paper.9x12` | 11 | `Rec01`–`Rec11` | `owner_confirmed_complete` |
-| [2026-09-01](2026-09-01/fragment_sequence_relationships.csv) | `2026-09-01.0237.BallpointPen.Ink.Paper.9x12` | 4 | `Rec01`–`Rec04` | `owner_confirmed_complete` |
 | [2026-09-01](2026-09-01/fragment_sequence_relationships.csv) | `2026-09-01.0619.BallpointPen.Ink.Paper.9x12` | 9 | `Rec01`–`Rec09` | `owner_confirmed_complete` |
-The dated CSV files remain authoritative for row-level identities, ordering,
-derivative coverage, evidence states, hashes, and pinned source revisions.

+# Standard provenance
+This subtree stores supporting historical evidence and relationship tables. It
+is outside both active video indexes and Dataset Viewer configurations; nested
+placement does not make a media object canonical.
+Each active metadata row continues to identify one published video object.
+Relationship sidecars can group those objects without merging their persistent
+`record_id` values or asserting undocumented drawing- or session-level facts.
+## Dated layers
+- [`2026-07-31/`](2026-07-31/) preserves historical filename-to-record mappings
+  and the pre-rebuild metadata snapshot without retaining the former duplicate
+  video snapshot.
+- [`2026-08-27/`](2026-08-27/README.md) documents 22 canonical fragments across
+  five complete source sequences and five noncanonical InShot derivatives.
+- [`2026-08-29/`](2026-08-29/README.md) documents 19 canonical fragments across
+  four complete source sequences and no derivative payloads.
+- [`2026-08-30/`](2026-08-30/README.md) documents 39 canonical fragments across
+  five complete source sequences and no derivative payloads.
+- [`2026-08-31/`](2026-08-31/README.md) documents 32 canonical fragments across
+  four complete source sequences and no derivative payloads.
 - [`2026-09-01/`](2026-09-01/README.md) documents 13 canonical fragments across
   two complete source sequences and no derivative payloads.
+- [`2026-09-02/`](2026-09-02/README.md) documents 32 canonical fragments across
+  three complete source sequences and no derivative payloads.
+## Documented fragment sequences
+These are the twenty-three sets recorded in the six dated relationship sidecars.
+`fragment_set_label` is a descriptive grouping label, not a global `work_id`.
+`owner_confirmed_complete` applies to the canonical source sequence represented
+in that sidecar; it does not establish real drawing time or claim that activity
+outside the retained recordings was captured.
+| Sidecar | `fragment_set_label` | Canonical fragments | Positions | `sequence_completeness` |
+| --- | --- | ---: | --- | --- |
+| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-24.0157.BallpointPen.Ink.Paper.9x12` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
+| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-24.0638.BallpointPen.Ink.Paper.12x9` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
+| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-25.1941.BallpointPen.Ink.Paper.9x12` | 6 | `Rec01`–`Rec06` | `owner_confirmed_complete` |
+| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-26.1229.BallpointPen.Ink.Paper.9x12` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
+| [2026-08-27](2026-08-27/fragment_sequence_relationships.csv) | `2026-08-27.0856.BallpointPen.Ink.Paper.9x12` | 10 | `Rec01`–`Rec10` | `owner_confirmed_complete` |
+| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-28.0108.BallpointPen.Ink.Paper.9x12` | 10 | `Rec01`–`Rec10` | `owner_confirmed_complete` |
+| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-29.0254.BallpointPen.Ink.Paper.9x12` | 4 | `Rec01`–`Rec04` | `owner_confirmed_complete` |
+| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-29.0602.BallpointPen.Ink.Paper.9x12` | 2 | `Rec01`–`Rec02` | `owner_confirmed_complete` |
+| [2026-08-29](2026-08-29/fragment_sequence_relationships.csv) | `2026-08-29.0716.BallpointPen.Ink.Paper.9x12` | 3 | `Rec01`–`Rec03` | `owner_confirmed_complete` |
+| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-29.1450.BallpointPen.Ink.Paper.9x12` | 9 | `Rec01`–`Rec09` | `owner_confirmed_complete` |
+| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-29.1849.BallpointPen.Ink.Paper.9x12` | 5 | `Rec01`–`Rec05` | `owner_confirmed_complete` |
+| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-30.0022.BallpointPen.Ink.Paper.9x12` | 4 | `Rec01`–`Rec04` | `owner_confirmed_complete` |
+| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-30.1126.FountainPen.Ink.Paper.9x12` | 15 | `Rec01`–`Rec15` | `owner_confirmed_complete` |
+| [2026-08-30](2026-08-30/fragment_sequence_relationships.csv) | `2026-08-30.1712.BallpointPen.Ink.Paper.9x12` | 6 | `Rec01`–`Rec06` | `owner_confirmed_complete` |
+| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.0009.BallpointPen.Ink.Paper.9x12` | 8 | `Rec01`–`Rec08` | `owner_confirmed_complete` |
+| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.0732.BallpointPen.Ink.Paper.9x12` | 6 | `Rec01`–`Rec06` | `owner_confirmed_complete` |
+| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.1039.BallpointPen.Ink.Paper.9x12` | 7 | `Rec01`–`Rec07` | `owner_confirmed_complete` |
+| [2026-08-31](2026-08-31/fragment_sequence_relationships.csv) | `2026-08-31.1212.BallpointPen.Ink.Paper.9x12` | 11 | `Rec01`–`Rec11` | `owner_confirmed_complete` |
+| [2026-09-01](2026-09-01/fragment_sequence_relationships.csv) | `2026-09-01.0237.BallpointPen.Ink.Paper.9x12` | 4 | `Rec01`–`Rec04` | `owner_confirmed_complete` |
 | [2026-09-01](2026-09-01/fragment_sequence_relationships.csv) | `2026-09-01.0619.BallpointPen.Ink.Paper.9x12` | 9 | `Rec01`–`Rec09` | `owner_confirmed_complete` |
+| [2026-09-02](2026-09-02/fragment_sequence_relationships.csv) | `2026-09-01.0213.BallpointPen.Ink.Paper.9x12` | 12 | `Rec01`–`Rec12` | `owner_confirmed_complete` |
+| [2026-09-02](2026-09-02/fragment_sequence_relationships.csv) | `2026-09-01.2356.BallpointPen.Ink.Paper.9x12` | 9 | `Rec01`–`Rec09` | `owner_confirmed_complete` |
+| [2026-09-02](2026-09-02/fragment_sequence_relationships.csv) | `2026-09-02.0301.BallpointPen.Ink.Paper.9x12` | 11 | `Rec01`–`Rec11` | `owner_confirmed_complete` |
+The dated CSV files remain authoritative for row-level identities, ordering,
+derivative coverage, evidence states, hashes, and pinned source revisions.

VALIDATION.md CHANGED Viewed

@@ -1,286 +1,325 @@
-# Validation Report
-## Scope and publication boundary
-Hugging Face PR #42 begins at exact Hub `main` revision
-`53b02712af07d278c9456ecb319e970e2954d2c4`. It adds 13 unchanged canonical
-Framelapse source fragments grouped into two creator-confirmed complete
 `RecNN` sequences. It does not change the 29-field active schema,
 `standard-2025-07-13`, any existing media payload, or any existing
 `record_id`.
 The media-only PR revision is
-`e2094ae582c057df9d40e9bfe4dc00afed0bad2a`. The metadata-bearing revision is
-`fe66d1dbb117486c2046376423316fd2cc25d488`; it contains the exact 488-row root index validated
-below. The 13-row relationship sidecar is committed afterward
 and pins that metadata-bearing revision, avoiding a circular self-reference.
 This report validates the pull-request state; merge status and Viewer
 settlement are separate deployment checks.
-## PR #43 semantic-correction receipt
-The content-bearing PR revision
-`4d6c6098c7428d77e7c04771a2aabcb46918345f` is based directly on Hub `main`
-revision `9ba68359e4886d12ad865bd0a5cd00515a78ede6`. Remote validation at that
-immutable revision produced zero errors.
-| Check | Result |
-| --- | ---: |
-| Root `metadata.csv` | 311,869 bytes; SHA-256 `00bc268f0267b09f2cd18e8b1ac8751f45e7d2b2232d240b438857f82558a161` |
-| Pre-Standard `metadata.csv` | 38,169 bytes; SHA-256 `7ef4b21645760b2aa2047ad1b548cb341c97c288378498f135cbbecd82c4f4b9` |
-| Active indexed rows | 616 |
-| Canonical Standard / Pre-Standard | 488 / 128 |
-| Unique `record_id` / nonblank Xet identities | 616 / 616 |
-| Missing indexed targets | 0 |
-| Unindexed direct active-tier MP4 files | 0 |
-| Metadata-to-Hub size / Xet mismatches | 0 / 0 |
-| `SHA256SUMS` | 90,319 bytes; SHA-256 `5e86108f0323c4a5c0c6e01636529ecc185252d5cc1eb23e5b46ab7a0ccd8e3f` |
-| Manifest payload coverage | 622 / 622; 2,079,242,936,421 bytes |
-| Manifest-to-Hub identity errors | 0 |
-| Regression tests | 30 / 30 passed |
-All fifteen renamed June 30 × 40 in paths have the same Hub LFS SHA-256 and
-byte-size receipts as their `Paper`-named source paths at the base revision.
-The PR head contains all fifteen `IllustrationBoard` paths and none of the old
-`Paper` paths. This verifies a path-and-metadata correction without a media
-payload rewrite. Viewer settlement remains a post-merge check and has not been
-claimed here.
-## Historical pinned active-index receipt
-This receipt records the exact PR #42 validation event described above; it is
-not a digest of current `main`.
 **PINNED REMOTE-INVENTORY PASS — zero validation errors**
 The repository inventory was captured from the Hub API and immutable resolve
-headers at the metadata-bearing revision. `tools/validate_metadata.py` then
-checked both active indexes and every indexed media identity and byte size
-against that inventory.
 | Check | Result |
 | --- | ---: |
-| Hub source revision | `fe66d1dbb117486c2046376423316fd2cc25d488` |
-| Root `metadata.csv` | 309,400 bytes; SHA-256 `1a20df86d44dde90ed89bda230666772f24b04ca0dbd2db8fba5749fe1da1308` |
-| Pre-Standard `metadata.csv` | 37,361 bytes; SHA-256 `15de8b2c97a8c463dd279054ab0ce3894caa6602f3b72f8025d32511746c3630` |
-| Active indexed rows | 616 |
-| Canonical Standard / Pre-Standard | 488 / 128 |
 | Metadata columns per index | 29 |
-| Unique `record_id` / nonblank Xet identities | 616 / 616 |
-| Direct Standard / Pre-Standard MP4 files | 488 / 128 |
 | Nested noncanonical provenance MP4 files | 5 |
 | Missing indexed targets | 0 |
 | Unindexed direct active-tier MP4 files | 0 |
 | Metadata-to-Hub size mismatches | 0 |
 | Metadata-to-Hub Xet mismatches | 0 |
-Indexed video totals are 2,062,483,711,146 bytes (2.062 TB decimal) and
-55.878 encoded playback hours. Encoded playback time is not real drawing time.
-Viewer settlement is checked after merge but is not used as a substitute for
-the revision-pinned row, media, size, and identity checks above.
-## Historical repository-wide payload checksum receipt
-This receipt likewise records the exact PR #42 validation event rather than
-the current `SHA256SUMS` file.
-`SHA256SUMS` was generated from the LFS-compatible content identities at exact
-Hub revision `e2094ae582c057df9d40e9bfe4dc00afed0bad2a`. Every identity was also
-matched to the immutable resolve response's `X-Linked-ETag` and byte size. The
-Xet file ID was retained separately and was not treated as a SHA-256.
-| Check | Result |
-| --- | ---: |
-| Manifest entries | 622 |
-| Published MP4 payloads | 621 / 621 |
-| Published ZIP payloads | 1 / 1 |
-| Payload bytes covered | 2,079,242,936,421 |
-| Missing / extra manifest paths | 0 / 0 |
-| Invalid / duplicate SHA-256 values | 0 / 0 |
-| LFS SHA-256 / resolve-header mismatches | 0 / 0 |
-| Manifest byte size | 89,532 |
-| Manifest SHA-256 | `968e885399584ff6532af7fcb0c23602e6eb27d1f9ff7525b3083ca6f584ac93` |
-These are ordinary byte-level SHA-256 values for the payload contents. The
-cross-check did not transfer and rehash all 2.079 TB of payload bytes; a full
-download can independently reproduce every digest with
-`tools/validate_sha256sums.py --verify-root`.
-## New-source media verification
-Before upload, all 13 sources were SHA-256 hashed, probed, fully demuxed, and
-sample-decoded as raw pixels at start, middle, and near-end checkpoints. A final
-rehash confirmed that all 13 sources remained byte-identical. Results were
-13/13 hashes, 13/13 complete packet demuxes, 39/39 decoded frame samples,
-29,507 container frames matching 29,507 counted video packets, and zero final
-errors. The local source directory was not modified.
-## Relationship validation
-### Fragment sequences
-All five dated sidecars pass current structural and metadata-join validation:
-| Sidecar | Canonical fragments | Derivatives | Sets | Result |
-| --- | ---: | ---: | ---: | --- |
-| `2026-08-27` | 22 | 5 | 5 | zero errors |
-| `2026-08-29` | 19 | 0 | 4 | zero errors |
-| `2026-08-30` | 39 | 0 | 5 | zero errors |
-| `2026-08-31` | 32 | 0 | 4 | zero errors |
 | `2026-09-01` | 13 | 0 | 2 | zero errors |
-The validator compares canonical byte sizes with joined metadata and emits an
-explicit verification level. The new sidecar was checked against the exact
-metadata-bearing remote inventory and reports
-`pinned_repository_inventory` and `inventory_binding_checked: true`.
-Historical sidecars pass current structural and metadata joins; their own
-pinned-inventory receipts remain in the dated READMEs.
-`owner_confirmed_complete` describes the retained canonical source sequence's
-membership and order. It does not independently establish gapless real-world
-capture, real drawing time, or permanent physical-work completion.
-### Physical references
-The physical-reference sidecar passes its dedicated validator against the
-exact 363-row source metadata at revision
-`ba7e7903901767f2d5a4367d7ae22c2546366d6d`:
-| Check | Result |
-| --- | ---: |
-| Source metadata receipt | 190,250 bytes; SHA-256 `2062d1ed0ae83a54cac501e1dfcc23bc6cff087d43fd1242fdd19f3028f3d30d` |
-| Sidecar receipt | 346,794 bytes; SHA-256 `5f3e1ed6c484853cd6df8722e3916b111fc280a1e02a4f9272c0566172821c3a` |
-| Relationship rows / columns | 309 / 32 |
-| Unique `reference_id` / `record_id` | 309 / 309 |
-| Endpoint photographs | 52 |
-| Owner-confirmed record references | 232 |
-| Two-sided work references | 24 |
-| Longitudinal continuations | 1 |
-| Structural, join, hash-state, and manifest errors | 0 |
-Nine rows previously said `front_and_paired_hashes_verified` while their paired
-filename and paired hash were blank. They now use the mechanically accurate
-front-only ledger state. No photograph pairing, endpoint, date, material, or
-owner evidence was reinterpreted.
-The photographs remain local evidence and are not bundled. This validation
-checks internal consistency and exact historical metadata joins; it is not
-visual authentication of absent media.
-## Regression tests
-The dependency-free suites currently run 30 tests covering repository receipt
-binding, fragment-size joins and verification levels, semantic documentation
-and metadata invariants, and physical-reference identity, hash-state, pairing,
-manifest, and metadata-join failures.
-```bash
-python -m unittest discover -s tools -p "test_*.py"
-```
-Result: **30/30 passed**.
-## Outstanding curator questions and limitations
-These remain explicit; validation must not guess their answers:
-1. One Pre-Standard record has no support token or independent support evidence;
-   its `support` remains blank and its `notes` state the limitation.
-2. The current schema does not normalize whether a documented finish label
-   applies to a recording, session, reviewed fragment sequence, or physical work.
-3. Nineteen active Standard `RecNN` rows are outside the five dated fragment
-   sidecars. Their existing notes and changelog evidence remain authoritative;
-   sidecar absence does not establish no relationship or sequence completeness.
-4. Twenty-seven physical-reference rows retain explicit conflict evidence.
-   Conflict language is an adjudication queue, not proof that 27 canonical
-   timestamps are wrong.
-5. Three Standard records are explicitly documented shortened derivatives,
-   not full-duration masters.
 6. Most active indexed videos at this revision contain an audio stream (485 of
-   616). Stream presence does not establish meaningful signal; rights and
-   privacy review remain necessary.
-7. Encoded frame rate and playback duration cannot recover real drawing time.
-8. The 2012–2016 archive has no public video payload in this release.
-9. No official train/validation/test partition or global `work_id` exists.
-## Reproduction
-Validate both active indexes locally:
-```bash
-python tools/validate_metadata.py metadata.csv \
-  --pre-standard-metadata Pre_Standard_Time_Lapses/metadata.csv
-```
-Validate the payload checksum manifest against a blob-enabled repository
-inventory captured from one immutable revision:
-```bash
-python tools/validate_sha256sums.py SHA256SUMS \
-  --repo-json repo_api_blobs.json \
-  --revision "<40-hex-commit>"
-```
-For the strongest active-index check, capture an inventory at one immutable
-revision, including exact receipts for both metadata files:
-```bash
-python tools/capture_hub_inventory.py \
-  --repo-json repo_api_blobs.json \
-  --repo-id maxwellinked/time-lapse-artifacts \
-  --revision "<40-hex-commit>" \
-  --output repo_inventory_xet.json \
-  --validation-file metadata.csv \
-  --validation-file Pre_Standard_Time_Lapses/metadata.csv
-python tools/validate_metadata.py metadata.csv \
-  --pre-standard-metadata Pre_Standard_Time_Lapses/metadata.csv \
-  --repo-inventory-json repo_inventory_xet.json
-```
-Validate the dated fragment sidecars separately because each preserves its own
-source revision:
-```bash
-python tools/validate_fragment_relationships.py \
-  --relationships Standard_Time_Lapses/Provenance/2026-08-27/fragment_sequence_relationships.csv \
-  --metadata metadata.csv
-python tools/validate_fragment_relationships.py \
-  --relationships Standard_Time_Lapses/Provenance/2026-08-29/fragment_sequence_relationships.csv \
-  --metadata metadata.csv
-python tools/validate_fragment_relationships.py \
-  --relationships Standard_Time_Lapses/Provenance/2026-08-30/fragment_sequence_relationships.csv \
-  --metadata metadata.csv \
-  --repo-inventory-json repo_inventory_7293edcc.json
-python tools/validate_fragment_relationships.py \
-  --relationships Standard_Time_Lapses/Provenance/2026-08-31/fragment_sequence_relationships.csv \
-  --metadata metadata.csv \
-  --repo-inventory-json repo_inventory_480bc7e2.json
 python tools/validate_fragment_relationships.py \
   --relationships Standard_Time_Lapses/Provenance/2026-09-01/fragment_sequence_relationships.csv \
   --metadata metadata.csv \
   --repo-inventory-json repo_inventory_fe66d1db.json
-```
-Retrieve the exact historical metadata bound by the physical-reference
-manifest, then validate the sidecar:
-```bash
-hf download maxwellinked/time-lapse-artifacts metadata.csv \
-  --type dataset \
-  --revision ba7e7903901767f2d5a4367d7ae22c2546366d6d \
-  --local-dir physical-reference-source
-python tools/validate_physical_references.py \
-  --references Physical_References/endpoint_references.csv \
-  --metadata physical-reference-source/metadata.csv \
-  --manifest Physical_References/MANIFEST.json
 ```
-Always record the exact repository revision. A moving branch is not a
-reproducible identity receipt.

+# Validation Report
+## Scope and publication boundary
+Hugging Face PR #44 begins at exact Hub `main` revision
+`99371163392d9f4b6685da116fb92398a610457e`. It adds 32 unchanged canonical
+Framelapse source fragments grouped into three creator-confirmed complete
 `RecNN` sequences. It does not change the 29-field active schema,
 `standard-2025-07-13`, any existing media payload, or any existing
 `record_id`.
 The media-only PR revision is
+`715d6ba31ae7dcd447d99467352bcf5ee240aa4a`. The metadata-bearing revision is
+`e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878`; it contains the exact 520-row root index
+validated below. The 32-row relationship sidecar is committed afterward
 and pins that metadata-bearing revision, avoiding a circular self-reference.
 This report validates the pull-request state; merge status and Viewer
 settlement are separate deployment checks.
+## PR #44 immutable active-index receipt
 **PINNED REMOTE-INVENTORY PASS — zero validation errors**
 The repository inventory was captured from the Hub API and immutable resolve
+headers at the metadata-bearing revision. The validators checked both active
+indexes, every indexed media identity and byte size, the repository-wide
+payload checksum manifest, and the new relationship sidecar against that
+inventory.
 | Check | Result |
 | --- | ---: |
+| Hub source revision | `e9f8cb1cb909232b1e0c2c95e5db70c7f18b3878` |
+| Root `metadata.csv` | 342,559 bytes; SHA-256 `8adb8de294b3b6c7ef250ce55f9b8492e5e28657bd2c2ffc387ba5d7a593f209` |
+| Pre-Standard `metadata.csv` | 38,169 bytes; SHA-256 `7ef4b21645760b2aa2047ad1b548cb341c97c288378498f135cbbecd82c4f4b9` |
+| Active indexed rows | 648 |
+| Canonical Standard / Pre-Standard | 520 / 128 |
 | Metadata columns per index | 29 |
+| Unique `record_id` / nonblank Xet identities | 648 / 648 |
+| Direct Standard / Pre-Standard MP4 files | 520 / 128 |
 | Nested noncanonical provenance MP4 files | 5 |
 | Missing indexed targets | 0 |
 | Unindexed direct active-tier MP4 files | 0 |
 | Metadata-to-Hub size mismatches | 0 |
 | Metadata-to-Hub Xet mismatches | 0 |
+| `SHA256SUMS` | 94,224 bytes; SHA-256 `9e7f598e36202e02f7d11b53618d12079b9129c2bd212865296ba953fffd6f3f` |
+| Manifest payload coverage | 654 / 654; 2,089,617,844,359 bytes |
+| Manifest-to-Hub identity errors | 0 |
+| Regression tests | 30 / 30 passed |
+Indexed video totals are 2,072,858,619,084 bytes (2.073 TB decimal) and
+56.442 encoded playback hours. Encoded playback time is not real drawing time.
+## PR #43 semantic-correction receipt
+The content-bearing PR revision
+`4d6c6098c7428d77e7c04771a2aabcb46918345f` is based directly on Hub `main`
+revision `9ba68359e4886d12ad865bd0a5cd00515a78ede6`. Remote validation at that
+immutable revision produced zero errors.
+| Check | Result |
+| --- | ---: |
+| Root `metadata.csv` | 311,869 bytes; SHA-256 `00bc268f0267b09f2cd18e8b1ac8751f45e7d2b2232d240b438857f82558a161` |
+| Pre-Standard `metadata.csv` | 38,169 bytes; SHA-256 `7ef4b21645760b2aa2047ad1b548cb341c97c288378498f135cbbecd82c4f4b9` |
+| Active indexed rows | 616 |
+| Canonical Standard / Pre-Standard | 488 / 128 |
+| Unique `record_id` / nonblank Xet identities | 616 / 616 |
+| Missing indexed targets | 0 |
+| Unindexed direct active-tier MP4 files | 0 |
+| Metadata-to-Hub size / Xet mismatches | 0 / 0 |
+| `SHA256SUMS` | 90,319 bytes; SHA-256 `5e86108f0323c4a5c0c6e01636529ecc185252d5cc1eb23e5b46ab7a0ccd8e3f` |
+| Manifest payload coverage | 622 / 622; 2,079,242,936,421 bytes |
+| Manifest-to-Hub identity errors | 0 |
+| Regression tests | 30 / 30 passed |
+All fifteen renamed June 30 × 40 in paths have the same Hub LFS SHA-256 and
+byte-size receipts as their `Paper`-named source paths at the base revision.
+The PR head contains all fifteen `IllustrationBoard` paths and none of the old
+`Paper` paths. This verifies a path-and-metadata correction without a media
+payload rewrite. Viewer settlement remains a post-merge check and has not been
+claimed here.
+## Historical pinned active-index receipt
+This receipt records the exact PR #42 validation event described above; it is
+not a digest of current `main`.
+**PINNED REMOTE-INVENTORY PASS — zero validation errors**
+The repository inventory was captured from the Hub API and immutable resolve
+headers at the metadata-bearing revision. `tools/validate_metadata.py` then
+checked both active indexes and every indexed media identity and byte size
+against that inventory.
+| Check | Result |
+| --- | ---: |
+| Hub source revision | `fe66d1dbb117486c2046376423316fd2cc25d488` |
+| Root `metadata.csv` | 309,400 bytes; SHA-256 `1a20df86d44dde90ed89bda230666772f24b04ca0dbd2db8fba5749fe1da1308` |
+| Pre-Standard `metadata.csv` | 37,361 bytes; SHA-256 `15de8b2c97a8c463dd279054ab0ce3894caa6602f3b72f8025d32511746c3630` |
+| Active indexed rows | 616 |
+| Canonical Standard / Pre-Standard | 488 / 128 |
+| Metadata columns per index | 29 |
+| Unique `record_id` / nonblank Xet identities | 616 / 616 |
+| Direct Standard / Pre-Standard MP4 files | 488 / 128 |
+| Nested noncanonical provenance MP4 files | 5 |
+| Missing indexed targets | 0 |
+| Unindexed direct active-tier MP4 files | 0 |
+| Metadata-to-Hub size mismatches | 0 |
+| Metadata-to-Hub Xet mismatches | 0 |
+Indexed video totals are 2,062,483,711,146 bytes (2.062 TB decimal) and
+55.878 encoded playback hours. Encoded playback time is not real drawing time.
+Viewer settlement is checked after merge but is not used as a substitute for
+the revision-pinned row, media, size, and identity checks above.
+## Historical repository-wide payload checksum receipt
+This receipt likewise records the exact PR #42 validation event rather than
+the current `SHA256SUMS` file.
+`SHA256SUMS` was generated from the LFS-compatible content identities at exact
+Hub revision `e2094ae582c057df9d40e9bfe4dc00afed0bad2a`. Every identity was also
+matched to the immutable resolve response's `X-Linked-ETag` and byte size. The
+Xet file ID was retained separately and was not treated as a SHA-256.
+| Check | Result |
+| --- | ---: |
+| Manifest entries | 622 |
+| Published MP4 payloads | 621 / 621 |
+| Published ZIP payloads | 1 / 1 |
+| Payload bytes covered | 2,079,242,936,421 |
+| Missing / extra manifest paths | 0 / 0 |
+| Invalid / duplicate SHA-256 values | 0 / 0 |
+| LFS SHA-256 / resolve-header mismatches | 0 / 0 |
+| Manifest byte size | 89,532 |
+| Manifest SHA-256 | `968e885399584ff6532af7fcb0c23602e6eb27d1f9ff7525b3083ca6f584ac93` |
+These are ordinary byte-level SHA-256 values for the payload contents. The
+cross-check did not transfer and rehash all 2.079 TB of payload bytes; a full
+download can independently reproduce every digest with
+`tools/validate_sha256sums.py --verify-root`.
+## New-source media verification
+Before upload, all 13 sources were SHA-256 hashed, probed, fully demuxed, and
+sample-decoded as raw pixels at start, middle, and near-end checkpoints. A final
+rehash confirmed that all 13 sources remained byte-identical. Results were
+13/13 hashes, 13/13 complete packet demuxes, 39/39 decoded frame samples,
+29,507 container frames matching 29,507 counted video packets, and zero final
+errors. The local source directory was not modified.
+## Relationship validation
+### Fragment sequences
+All six dated sidecars pass current structural and metadata-join validation:
+| Sidecar | Canonical fragments | Derivatives | Sets | Result |
+| --- | ---: | ---: | ---: | --- |
+| `2026-08-27` | 22 | 5 | 5 | zero errors |
+| `2026-08-29` | 19 | 0 | 4 | zero errors |
+| `2026-08-30` | 39 | 0 | 5 | zero errors |
+| `2026-08-31` | 32 | 0 | 4 | zero errors |
 | `2026-09-01` | 13 | 0 | 2 | zero errors |
+| `2026-09-02` | 32 | 0 | 3 | zero errors |
+The validator compares canonical byte sizes with joined metadata and emits an
+explicit verification level. The new sidecar was checked against the exact
+metadata-bearing remote inventory and reports
+`pinned_repository_inventory` and `inventory_binding_checked: true`.
+Historical sidecars pass current structural and metadata joins; their own
+pinned-inventory receipts remain in the dated READMEs.
+`owner_confirmed_complete` describes the retained canonical source sequence's
+membership and order. It does not independently establish gapless real-world
+capture, real drawing time, or permanent physical-work completion.
+### Physical references
+The physical-reference sidecar passes its dedicated validator against the
+exact 363-row source metadata at revision
+`ba7e7903901767f2d5a4367d7ae22c2546366d6d`:
+| Check | Result |
+| --- | ---: |
+| Source metadata receipt | 190,250 bytes; SHA-256 `2062d1ed0ae83a54cac501e1dfcc23bc6cff087d43fd1242fdd19f3028f3d30d` |
+| Sidecar receipt | 346,794 bytes; SHA-256 `5f3e1ed6c484853cd6df8722e3916b111fc280a1e02a4f9272c0566172821c3a` |
+| Relationship rows / columns | 309 / 32 |
+| Unique `reference_id` / `record_id` | 309 / 309 |
+| Endpoint photographs | 52 |
+| Owner-confirmed record references | 232 |
+| Two-sided work references | 24 |
+| Longitudinal continuations | 1 |
+| Structural, join, hash-state, and manifest errors | 0 |
+Nine rows previously said `front_and_paired_hashes_verified` while their paired
+filename and paired hash were blank. They now use the mechanically accurate
+front-only ledger state. No photograph pairing, endpoint, date, material, or
+owner evidence was reinterpreted.
+The photographs remain local evidence and are not bundled. This validation
+checks internal consistency and exact historical metadata joins; it is not
+visual authentication of absent media.
+## Regression tests
+The dependency-free suites currently run 30 tests covering repository receipt
+binding, fragment-size joins and verification levels, semantic documentation
+and metadata invariants, and physical-reference identity, hash-state, pairing,
+manifest, and metadata-join failures.
+```bash
+python -m unittest discover -s tools -p "test_*.py"
+```
+Result: **30/30 passed**.
+## Outstanding curator questions and limitations
+These remain explicit; validation must not guess their answers:
+1. One Pre-Standard record has no support token or independent support evidence;
+   its `support` remains blank and its `notes` state the limitation.
+2. The current schema does not normalize whether a documented finish label
+   applies to a recording, session, reviewed fragment sequence, or physical work.
+3. Nineteen active Standard `RecNN` rows are outside the six dated fragment
+   sidecars. Their existing notes and changelog evidence remain authoritative;
+   sidecar absence does not establish no relationship or sequence completeness.
+4. Twenty-seven physical-reference rows retain explicit conflict evidence.
+   Conflict language is an adjudication queue, not proof that 27 canonical
+   timestamps are wrong.
+5. Three Standard records are explicitly documented shortened derivatives,
+   not full-duration masters.
 6. Most active indexed videos at this revision contain an audio stream (485 of
+   648). Stream presence does not establish meaningful signal; rights and
+   privacy review remain necessary.
+7. Encoded frame rate and playback duration cannot recover real drawing time.
+8. The 2012–2016 archive has no public video payload in this release.
+9. No official train/validation/test partition or global `work_id` exists.
+## Reproduction
+Validate both active indexes locally:
+```bash
+python tools/validate_metadata.py metadata.csv \
+  --pre-standard-metadata Pre_Standard_Time_Lapses/metadata.csv
+```
+Validate the payload checksum manifest against a blob-enabled repository
+inventory captured from one immutable revision:
+```bash
+python tools/validate_sha256sums.py SHA256SUMS \
+  --repo-json repo_api_blobs.json \
+  --revision "<40-hex-commit>"
+```
+For the strongest active-index check, capture an inventory at one immutable
+revision, including exact receipts for both metadata files:
+```bash
+python tools/capture_hub_inventory.py \
+  --repo-json repo_api_blobs.json \
+  --repo-id maxwellinked/time-lapse-artifacts \
+  --revision "<40-hex-commit>" \
+  --output repo_inventory_xet.json \
+  --validation-file metadata.csv \
+  --validation-file Pre_Standard_Time_Lapses/metadata.csv
+python tools/validate_metadata.py metadata.csv \
+  --pre-standard-metadata Pre_Standard_Time_Lapses/metadata.csv \
+  --repo-inventory-json repo_inventory_xet.json
+```
+Validate the dated fragment sidecars separately because each preserves its own
+source revision:
+```bash
+python tools/validate_fragment_relationships.py \
+  --relationships Standard_Time_Lapses/Provenance/2026-08-27/fragment_sequence_relationships.csv \
+  --metadata metadata.csv
+python tools/validate_fragment_relationships.py \
+  --relationships Standard_Time_Lapses/Provenance/2026-08-29/fragment_sequence_relationships.csv \
+  --metadata metadata.csv
+python tools/validate_fragment_relationships.py \
+  --relationships Standard_Time_Lapses/Provenance/2026-08-30/fragment_sequence_relationships.csv \
+  --metadata metadata.csv \
+  --repo-inventory-json repo_inventory_7293edcc.json
+python tools/validate_fragment_relationships.py \
+  --relationships Standard_Time_Lapses/Provenance/2026-08-31/fragment_sequence_relationships.csv \
+  --metadata metadata.csv \
+  --repo-inventory-json repo_inventory_480bc7e2.json
 python tools/validate_fragment_relationships.py \
   --relationships Standard_Time_Lapses/Provenance/2026-09-01/fragment_sequence_relationships.csv \
   --metadata metadata.csv \
   --repo-inventory-json repo_inventory_fe66d1db.json
+python tools/validate_fragment_relationships.py \
+  --relationships Standard_Time_Lapses/Provenance/2026-09-02/fragment_sequence_relationships.csv \
+  --metadata metadata.csv \
+  --repo-inventory-json repo_inventory_e9f8cb1c.json
 ```
+Retrieve the exact historical metadata bound by the physical-reference
+manifest, then validate the sidecar:
+```bash
+hf download maxwellinked/time-lapse-artifacts metadata.csv \
+  --type dataset \
+  --revision ba7e7903901767f2d5a4367d7ae22c2546366d6d \
+  --local-dir physical-reference-source
+python tools/validate_physical_references.py \
+  --references Physical_References/endpoint_references.csv \
+  --metadata physical-reference-source/metadata.csv \
+  --manifest Physical_References/MANIFEST.json
+```
+Always record the exact repository revision. A moving branch is not a
+reproducible identity receipt.

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