thumb|259px|Map of British settlements (6th century) __NOTOC__ Year 510 (DX) was a common year starting on Friday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulsh
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 0xd1bc277f034fe6207108e4859c050b52a110052345bce51212d871ae463df3ba. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b38795b5-7593-46a3-90a4-2d761be150a7.json and https://artists.proofprofile.net/proofs/artist/b38795b5-7593-46a3-90a4-2d761be150a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).