Albert Victor George Seymour (23 February 1887 – 1970)Family search (subscription required) was an English professional golfer. He had some success after World War I and won the 1921 News of the World
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 0x4589b95fb481f22e6563414b1540eea7760d416853a2b786903c39425986022a. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccc94ce8-b3d2-4292-bff4-2d470cdd3525.json and https://artists.proofprofile.net/proofs/artist/ccc94ce8-b3d2-4292-bff4-2d470cdd3525.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).