Hour audit: 2026-09-26T22
back to the files for this hour · how the archive is audited
Every number on this page is a stored measurement read from this hour's own records: its
manifest.json, its witness
statistics sidecar, and the corpus attestation. Nothing here is computed from the served
bytes at the time you load the page, so no line below claims the bytes are correct. The
digest and the one command that checks them are printed instead.
1 finding
- a machine expected this hour contributed nothing. Of the 5 machines expected to be capturing this hour, 1 contributed no rows: g. The hour is still whole on minutes; it simply rests on 4 machines rather than 5.
The report
POLYMARKET ORDERBOOK ARCHIVE — HOUR AUDIT
hour 2026-09-26T22 · corpus v3 · verdict AUDIT PASS* (1 finding)
COVERAGE minutes present 60/60 · first event 2026-09-26T22:00:00.000016688+00:00 · last event 2026-09-26T22:59:59.999992549+00:00
VOLUME 143,146,565 rows · 1,576,889,136 bytes (1.47 GiB) · 7 products, all holding rows
WITNESSES chik — 4 machines contributed rows
captured h: 128,155,789 · i: 123,044,849 · k: 116,966,388 · c: 77,036,203 (each machine's own feed; these overlap and do not sum to the file)
supplied h: 17,882,135 (12.49%) · i: 4,226,546 (2.95%) · k: 49,982,293 (34.92%) · c: 71,055,591 (49.64%) (rows of the merged file that came from it; these partition it)
5 expected (cghik), 1 contributed nothing: g
INTEGRITY sha256 944deba39a1af3f1ee2adde3555543b880a6b201e60d4257a70e89c11ae11d1a
the corpus checksum ledger names this file with the same digest
joined 143,155,025 to merged 143,146,565, minus 8,460 (minus 0.0059%)
boundary drops 8,460 · guard cache
SIDECARS none: this hour's manifest has no v31 key. The v3.1 sidecars are optional, and hours before them have none
MARKETS not measured (the per-hour market census runs on the capture host and its output is not published per hour)
HISTORY merged 2026-09-27T03:16:16Z as chik
layout union-event-sorted-v1
re-merges not measured (the merge ledger records the merge that produced this file, not the history of attempts)
supersessions not measured (supersession is recorded per corpus in the storage registry, not in the hour manifest)
CHECKS 7/8 pass, 1 finding
PASS all products present
PASS row counts reconcile
PASS byte ranges tile the file
PASS the merge delta is explained
FINDING a machine expected this hour contributed nothing
PASS the checksum ledger names this file
PASS the hour is whole
PASS a boundary guard ran
UPSTREAM status feed unobserved for this hour. Our incident register was last checked against the venue's feed at 2026-09-23T20:35Z, before this hour ended, so nothing has looked yet. This is a could-not-look and never an all-clear.The words in this report
Each line in the CHECKS block states what was found, not what was
hoped for: a check that passes is named for the thing that is true, and a check that does
not is renamed to the thing that is wrong. So FINDING never sits beside a
sentence asserting the opposite of the one below it.
The report above is fixed-width text, so nothing in it can be clicked. The same terms are linked here instead. Its verdict is a statement about minutes and nothing else. The row it reports comes from this hour's own manifest and its witness-statistics sidecar, and the completeness line comes from the corpus attestation. The gap between the joined and merged counts is deduplication, not loss, and the boundary drops are the duplicates discarded at the seam with the hour before. Where the history line names a supersession, this hour was rebuilt to a better state after it was first published. The precision is the timestamp resolution these files carry.
Detail
The same records, per product. A product holding no rows renders its zero rather than
being dropped: dropped and empty are indistinguishable to a reader, and only one of them is
a defect. A cell reading not meas. is one nothing published, which is a third
thing again and never a zero.
The class column is the merger's own verdict for that product, and it is
keyed to CONTRIBUTION rather than presence. FULL means every machine expected to
be capturing this hour delivered rows for that product; PARTIAL means some did
and some did not; SINGLE-BY-DESIGN means only one machine was ever expected, and
SINGLE-BY-DEFECT means several were and one delivered. So PARTIAL
here is a statement about the fleet, not about the product being damaged or truncated: the
rows that are present are whole.
PRODUCT rows bytes row groups sha256 best_bid_ask 15,052,375 167,423,400 0-57 b08ca46c85a1d15f4484ecf24ddb23acce55dbfe6eb55dad94fffce6eda528fe book 5,245,290 137,588,796 58-78 2442ab5e4d311c652fb50164fad9a0b5fa5fa57ce48781a2379d61d7e29bb179 last_trade_price 49,595 2,908,336 79-79 feb596634483258795f510834a3c0e3032cc9dde4acf2a10ea28dee663513d3b market_resolved 100,188 2,658,417 80-80 50cfe7c9c745221bea95793ca9c646a2b13a8c1334008015940e1b5a357c3df2 new_market 104,271 2,435,063 81-81 b7f19c8c6c1348bb9ffa6a981e9f0503f42584abcd9f05d228f685e88d5d469a price_change 122,585,994 1,261,931,202 82-549 7dd48b9ec401f02044ea74f85c5f2e83a654496a87a09a178720c1347f95d7b2 tick_size_change 8,852 319,329 550-550 b8d0c84247b2ed854ee17fd3d1630d51e3ecf179bb6f9d754e4c5599cc605de6 EVENT MIX count share price_change 122,585,994 85.64% best_bid_ask 15,052,375 10.52% book 5,245,290 3.66% new_market 104,271 0.07% market_resolved 100,188 0.07% last_trade_price 49,595 0.03% tick_size_change 8,852 <0.01% PER PRODUCT joined merged boundary exception mkts class best_bid_ask 15,052,454 15,052,375 79 58,031 PARTIAL book 5,253,080 5,245,290 7,790 215,075 PARTIAL last_trade_price 49,595 49,595 0 3,601 PARTIAL market_resolved 100,188 100,188 0 13,797 PARTIAL new_market 104,274 104,271 3 12,884 PARTIAL price_change 122,586,582 122,585,994 588 97,227 PARTIAL tick_size_change 8,852 8,852 0 2,213 PARTIAL ARRIVAL SKEW m rows won p50 p90 p99 max unmeasurable interpretation best_bid_ask c 7,992,826 7,392,081 5ms 13ms 148ms 5.5s 0 transport_latency_assumed best_bid_ask h 13,924,446 1,870,245 18ms 59ms 410ms 48.1s 0 transport_latency_assumed best_bid_ask i 13,322,190 410,003 22ms 31ms 140ms 4.3s 0 transport_latency_assumed best_bid_ask k 12,669,559 5,380,046 12ms 20ms 140ms 9.3s 0 transport_latency_assumed book c 4,618,262 4,199,813 1.7h 5.7d 45.3d 120.0d 0 book_staleness book h 1,032,204 175,297 1.1h 5.1d 42.4d 120.0d 0 book_staleness book i 1,539,218 241,807 1.3h 5.1d 45.1d 120.0d 0 book_staleness book k 1,871,528 628,373 1.4h 5.1d 45.1d 120.0d 0 book_staleness last_trade_price c 24,689 22,465 6ms 22ms 243ms 1.6s 0 transport_latency_assumed last_trade_price h 45,940 7,345 20ms 77ms 739ms 43.7s 0 transport_latency_assumed last_trade_price i 43,738 1,732 23ms 73ms 591ms 4.0s 0 transport_latency_assumed last_trade_price k 40,966 18,053 13ms 35ms 294ms 8.6s 0 transport_latency_assumed market_resolved c 98,197 95,994 2.0h 3.2h 4.1h 4.4h 0 transport_latency_assumed market_resolved h 3,524 439 19ms 43.4s 5.0min 5.8min 0 transport_latency_assumed market_resolved i 4,464 925 28ms 9.1min 14.8min 16.0min 0 transport_latency_assumed market_resolved k 5,036 2,830 30ms 13.4min 20.4min 20.8min 0 transport_latency_assumed new_market c 103,971 102,581 1.9h 3.4h 4.0h 4.6h 0 transport_latency_assumed new_market h 2,326 361 159ms 5.5min 9.7min 10.2min 0 transport_latency_assumed new_market i 2,244 520 94ms 2.2min 11.0min 11.1min 0 transport_latency_assumed new_market k 2,640 809 98ms 10.7min 15.9min 16.0min 0 transport_latency_assumed price_change c 64,194,890 59,239,422 5ms 14ms 161ms 7.1s 0 transport_latency_assumed price_change h 113,138,733 15,827,382 19ms 62ms 449ms 50.3s 0 transport_latency_assumed price_change i 108,124,915 3,571,343 22ms 35ms 183ms 4.4s 0 transport_latency_assumed price_change k 102,369,039 43,947,847 12ms 21ms 152ms 9.3s 0 transport_latency_assumed tick_size_change c 3,368 3,235 5ms 9ms 52ms 177ms 0 transport_latency_assumed tick_size_change h 8,616 1,066 18ms 56ms 5.3s 19.7s 0 transport_latency_assumed tick_size_change i 8,080 216 21ms 25ms 56ms 523ms 0 transport_latency_assumed tick_size_change k 7,620 4,335 12ms 15ms 57ms 736ms 0 transport_latency_assumed
Captured and supplied are different numbers
Captured is how many rows each machine's own feed carried. Redundant capture means these OVERLAP, heavily and on purpose, so they do not partition the file and their sum is larger than it. Two machines each capturing nearly every event is the archive working, not double counting.
Supplied is how many rows of the merged file actually came from that machine. This one does partition: it sums to the file's row count exactly. But it is decided by the merge's tie-break, so a machine can capture almost everything and supply almost nothing. Read alone, either number tells a false story about the fleet, which is why both are printed and neither is called "the witness share".
What the skew columns mean
Arrival skew is the receipt timestamp minus the venue timestamp, in milliseconds. For six of the seven products the sidecar interprets it as transport latency, and marks that interpretation assumed: it rests on the venue timestamp being emit time, which we cannot verify from outside.
book is not latency and must not be read as latency. Its
venue timestamp is the last time the book changed, so the sidecar interprets it as book
staleness and warns in its own note that large values mean a quiet book rather than slow
transport. Its maximum runs to weeks for that reason. This is why the table above gives a
row per product per machine and never one figure for the hour: percentiles do not average,
and these seven do not measure the same quantity.
Check it yourself
The digest above is a claim. This is how you refuse to take our word for it:
curl -O https://archive.pendulumflow.com/v3/2026-09-26/22/2026-09-26T22.parquet sha256sum 2026-09-26T22.parquet # compare with the sha256 line in the report above
A range digest certifies bytes. That those bytes are the product the manifest names comes from the manifest, which is why both are published and both are checkable.