Datasets:

dataforge-labs
/

bitcoin-mining-pool-templates

@@ -17,9 +17,9 @@ size_categories:
   - 100K<n<1M
 ---
-# Bitcoin mining pool templates and block propagation
-What each mining pool is building on, and how quickly the network learns a new block exists.
 Pools issue work to their miners describing the block they are extending, the coinbase they will
 claim, and whether previous work should be abandoned. That work is replaced every few seconds.
@@ -30,49 +30,27 @@ Once a block is found, the templates every pool was building are gone.
 | name | one row is |
 |---|---|
 | `e20_stratum_jobs_direct` | one job from one pool: the block it extends, its nTime, coinbase, merkle branch count and clean-jobs flag |
-| `e21_btc_block_propagation` | one peer announcing one block, timestamped |
-| `e21_btc_p2p_peers` | one peer connected to: user agent, services, whether it completed a handshake |
 ## Templates
-Pools building on the same block do not agree. In one observation across six pools, nTime spread
-across 25 seconds and coinbase structures ranged from 318 to 980 characters. Two endpoints run by
-the same operator differed by 10 seconds.
 `pool` is the endpoint connected to rather than an identity inferred from the data. `operator`
 collapses endpoints belonging to the same operator, and rows should usually be grouped on it.
-## Propagation
-Connections are held to roughly 120 peers and each announcement of a new block is timestamped.
-Sorting one block's rows by `received_ts` gives its propagation curve.
-Across four blocks in one window:
-| peers | first to median | full spread |
-|---|---|---|
-| 32 | 0.39s | 3.74s |
-| 31 | 0.27s | 2.00s |
-| 33 | 0.45s | 52.37s |
-Half the peers are reached within about half a second. The tail is the interesting part: in the
-third block one peer was 52 seconds behind. Nothing on chain records that, because a block
-carries only the timestamp its miner claimed.
 ## Before you build on this
-- Propagation times are ours and include network distance to each peer, which varies with
-  geography. Differences of milliseconds are partly distance; differences of seconds are not.
-  `peer_addr` is retained so this can be controlled for.
 - One vantage point, roughly 120 peers out of tens of thousands reachable. This is a sample of
   the network, not the network.
-- A peer that disconnects stops announcing, which resembles slowness. `e21_btc_p2p_peers` carries
-  handshake state so a gap can be told from a silence.
 - nTime is the pool's own clock and pools do not all update it on the same cadence. It indicates
   when a pool rebuilt its template. For arrival ordering use `observed_ts`, which is consistent
   across pools.
-- Six pools across five operators. Pools running regional endpoints may serve different work
-  elsewhere.
 - Merkle branches are stored as a count and first entry. The count with the coinbase identifies a
   distinct template; the full list is large and mostly redundant.
 - `clean_jobs = true` marks a pool switching blocks. Sorting those by `observed_ts` gives the

   - 100K<n<1M
 ---
+# Bitcoin mining pool templates
+What each mining pool is building on, at the moment it was building it.
 Pools issue work to their miners describing the block they are extending, the coinbase they will
 claim, and whether previous work should be abandoned. That work is replaced every few seconds.
 | name | one row is |
 |---|---|
 | `e20_stratum_jobs_direct` | one job from one pool: the block it extends, its nTime, coinbase, merkle branch count and clean-jobs flag |
 ## Templates
+Pools building on the same block do not agree, and the disagreement is structural rather than
+cosmetic. In one observation across eleven endpoints on a single block, nTime spread across 30
+seconds, coinbase length ranged from 318 to 1,488 characters, and merkle branch counts split
+between 10 and 13, meaning some pools were assembling materially smaller blocks than others at
+the same moment. Two endpoints run by the same operator differed by 10 seconds.
 `pool` is the endpoint connected to rather than an identity inferred from the data. `operator`
 collapses endpoints belonging to the same operator, and rows should usually be grouped on it.
 ## Before you build on this
 - One vantage point, roughly 120 peers out of tens of thousands reachable. This is a sample of
   the network, not the network.
 - nTime is the pool's own clock and pools do not all update it on the same cadence. It indicates
   when a pool rebuilt its template. For arrival ordering use `observed_ts`, which is consistent
   across pools.
+- Eleven endpoints across ten operators. Pools running regional endpoints may serve different
+  work elsewhere, so this is a sample of what each operator was building, not a census of it.
 - Merkle branches are stored as a count and first entry. The count with the coinbase identifies a
   distinct template; the full list is large and mostly redundant.
 - `clean_jobs = true` marks a pool switching blocks. Sorting those by `observed_ts` gives the

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