A collector that recorded every Polymarket order-book frame across about 300,000 subscriptions for four months, byte for byte, with a record of every interval it did and did not receive. The fleet was shut down in September 2026; the software is complete, tested and idle.
How the venue's WebSocket works, how the collector was built, the mathematics that placed markets across two boxes so a dropped socket on one was almost never a dropped socket on the other, and the numbers it produced.
Read the case studyNine paid vendors and one free archive, audited against API specs, SDK source, live probes and on-chain reads, with the evidence class marked on every claim, plus what it cost us to store the data. August 2026.
Read the assessmentWhat the hash covers, how a book is serialised before hashing, a worked example you can reproduce, and the rules we learned from months of mismatches: streak thresholds, the last-trade-price lag, tick-size changes, and why resyncing on every mismatch melts down.
Read the guideIt is available as:
Pricing on enquiry. Write to archiver@gabbatron.com.au.
Email us about the archiver