Datasets:

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maxwellinked

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time-lapse-artifacts

Like 3

Scope

This pull request ingests two creator-confirmed complete drawing sequences:

• 2026-09-18.0244.BallpointPen.Ink.Paper.9x12: 9 recordings, numbered Rec01–Rec09
• 2026-09-18.1444.BallpointPen.Ink.Paper.9x12: 20 recordings, numbered Rec01–Rec20

The batch contains 29 source MP4 files totaling 17,385,403,635 bytes, 3,387.532426 seconds, and 101,627 declared frames. Each source is mapped to one canonical fragment by its reviewed byte size and ordinary SHA-256 digest. Sequence numbering restarts for the second drawing.

Time semantics

The 02:44 and 14:44 values are creator-supplied drawing/group completion labels. They are not substituted for per-record timing evidence. Literal VID_* filename starts (27 files), MP4 format-level and video-stream creation/finalization observations (29 files), and filesystem creation/last-write observations remain separate in the local audit. The first group crosses local midnight by design.

One exact source, VID_20260917_215730.mp4 at SHA-256 1046b994eb371a6964845d120513a511320b9a51e8cca2116b3d61eb472d88a1, has two reviewed 1.000-second filesystem-versus-embedded observations. Every other such comparison must be exact. Format-level and video-stream creation_time values must agree for all 29 files.

Gate

Final validation also exposed an inherited timing-validator regression from the metadata-only provenance backfill in PR #67. This PR repairs that validator and adds a focused tamper test. The repair binds the exact 12 affected record_id values and their exact 36 active field values before reversing only those declared fields in a temporary reconstruction of the older pinned metadata receipt. It does not alter any archive row, timing bundle, or historical receipt, and it does not weaken the pinned byte-size or SHA-256 check.

Before merge, the workflow requires full source decoding, sampled start/middle/end decoding, exact frame/packet/read/decode totals, source-stat stability, exact media-to-metadata binding, checksum and relationship validation, the repository semantic tests, an exact 42-path PR delta (31 additions and 11 modifications), zero deletions or rename candidates, zero conflicts, and a 917-path final tree with 836 LFS/Xet objects and 81 non-LFS files.

This ingest does not create, move, or change a release tag or DOI. The GitHub Pages mirror is a separate post-merge operation pinned to the exact merged Hugging Face revision.