Hour audit: 2026-10-27T16
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
2026-10-27T16.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.
No findings
Every check that could be evaluated for this hour passed. That is not the same as the hour being perfect: it means the records this archive keeps about it agree with each other and with the corpus ledger.
4 checks could not be evaluated for this hour, listed with the reason in the block below. A check we could not run is recorded as exactly that, and never counted as a pass.
The report
POLYMARKET ORDERBOOK ARCHIVE — HOUR AUDIT
hour 2026-10-27T16 · corpus v3.1 · verdict AUDIT PENDING
COVERAGE not measured (this hour is not in the corpus attestation, so we have not looked at it)
VOLUME 70,970,526 rows · 7 products, all holding rows
WITNESSES imopq — 5 machines contributed rows
captured i: 140,453,264 · p: 140,437,504 · q: 140,426,574 · o: 140,168,235 · m: 133,394,213 (each machine's own feed; these overlap and do not sum to the file)
supplied i: 140,451,542 (99.29%) · p: 231,631 (0.16%) · q: 188,651 (0.13%) · o: 165,756 (0.12%) · m: 418,709 (0.30%) (rows of the merged file that came from it; these partition it)
5 product-machine pairs publish no supplied count, and the figures above do not reconcile to the file's row count, so the split is incomplete by an unrecorded amount
INTEGRITY not measured (the manifest publishes no digest for this file)
checksum ledger not read
joined 141,458,207 to merged 141,456,289, minus 1,918 (minus 0.0014%)
boundary drops 1,918 · 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 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 4/8 pass, 4 not evaluated
PASS all products present
PASS row counts reconcile
SKIPPED the byte ranges could not be checked
PASS the merge delta is explained
SKIPPED which machines were expected is not published beside this hour
SKIPPED the checksum ledger could not be read
SKIPPED the hour's minutes have not been measured
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 7,692,392 not meas. not meas. not published book 828,707 not meas. not meas. not published last_trade_price 63,168 not meas. not meas. not published market_resolved 1,947 not meas. not meas. not published new_market 13,271 not meas. not meas. not published price_change 62,366,577 not meas. not meas. not published tick_size_change 4,464 not meas. not meas. not published EVENT MIX count share price_change 62,366,577 87.88% best_bid_ask 7,692,392 10.84% book 828,707 1.17% last_trade_price 63,168 0.09% new_market 13,271 0.02% tick_size_change 4,464 <0.01% market_resolved 1,947 <0.01% PER PRODUCT joined merged boundary exception mkts class best_bid_ask 14,995,136 14,994,998 138 901 FULL book 1,645,813 1,645,511 302 180,739 FULL last_trade_price 63,172 63,168 4 122 FULL market_resolved 1,947 1,947 0 168 FULL new_market 13,271 13,271 0 9 FULL price_change 124,734,404 124,732,930 1,474 675 FULL tick_size_change 4,464 4,464 0 52 FULL ARRIVAL SKEW m rows won p50 p90 p99 max unmeasurable interpretation best_bid_ask i 14,990,395 14,990,259 40ms 61ms 267ms 12.2s 0 not stated best_bid_ask m 14,218,360 1,286 8ms 21ms 253ms 7.5s 0 not stated best_bid_ask o 14,991,023 1,434 8ms 22ms 260ms 14.5s 0 not stated best_bid_ask p 14,989,936 1,920 7ms 15ms 205ms 6.1s 0 not stated best_bid_ask q 14,989,813 99 15ms 29ms 339ms 57.1s 0 not stated book i 706,517 706,395 10.3min 2.8d 66.1d 150.8d 0 not stated book m 917,973 401,864 17.3min 3.1d 66.1d 150.8d 0 not stated book o 421,473 146,594 36.3s 43.8min 3.5h 4.5h 0 not stated book p 715,572 203,720 10.8min 2.8d 66.1d 150.8d 0 not stated book q 676,120 186,938 9.8min 2.8d 66.1d 150.8d 0 not stated last_trade_price i 63,080 63,076 41ms 94ms 402ms 3.5s 0 not stated last_trade_price m 59,218 24 9ms 31ms 413ms 6.7s 0 not stated last_trade_price o 63,099 37 9ms 35ms 444ms 9.3s 0 not stated last_trade_price p 62,965 30 8ms 18ms 242ms 1.8s 0 not stated last_trade_price q 63,089 1 17ms 50ms 640ms 11.2s 0 not stated market_resolved i 1,510 1,510 42ms 22.0s 49.5s 53.8s 0 not stated market_resolved m 1,343 123 8ms 143ms 4.8min 4.8min 0 not stated market_resolved o 1,502 135 8ms 130ms 38.6s 48.9s 0 not stated market_resolved p 1,509 179 8ms 20.8s 50.0s 1.1min 0 not stated market_resolved q 1,510 not meas. 19ms 22.8s 51.8s 56.1s 0 not stated new_market i 7,818 7,818 130ms 1.2min 1.9min 189.7d 0 not stated new_market m 7,809 1,014 110ms 1.3min 6.7min 189.7d 0 not stated new_market o 7,818 670 114ms 1.1min 2.0min 189.8d 0 not stated new_market p 7,818 2,500 32ms 1.2min 2.0min 189.7d 0 not stated new_market q 7,818 1,269 158ms 1.1min 1.9min 189.8d 0 not stated price_change i 124,679,480 124,678,020 40ms 69ms 289ms 12.4s 0 not stated price_change m 118,185,254 14,398 8ms 22ms 262ms 7.7s 0 not stated price_change o 124,678,856 16,886 8ms 24ms 271ms 14.6s 0 not stated price_change p 124,655,240 23,282 7ms 16ms 211ms 6.2s 0 not stated price_change q 124,683,760 344 16ms 31ms 359ms 57.8s 0 not stated tick_size_change i 4,464 4,464 40ms 60ms 188ms 395ms 0 not stated tick_size_change m 4,256 not meas. 8ms 17ms 201ms 479ms 0 not stated tick_size_change o 4,464 not meas. 8ms 16ms 245ms 3.6s 0 not stated tick_size_change p 4,464 not meas. 7ms 14ms 194ms 276ms 0 not stated tick_size_change q 4,464 not meas. 15ms 24ms 342ms 3.0s 0 not stated
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/v3.1/2026-10-27/16/ sha256sum # 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.