The Birthday Boys is a novel by Beryl Bainbridge. First published in 1991, this book tells the story of Captain Robert Scott's 1910-13 expedition to Antarctica. Plot introduction Five first-person na
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb847e6232292663cf16b67030a651db68bd62de8be13196b7dd5f80d266299ca. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ae5362f-ae05-4ba3-a6e6-88c400c6d85d.json and https://artists.proofprofile.net/proofs/artist/4ae5362f-ae05-4ba3-a6e6-88c400c6d85d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).