thumb|Portrait of Boyd Raeburn, Ginnie Powell, vocalist Johnson, Irv Kluger, Pete Candoli, Wes Hensel, Gordon Boswell, Hy Mandell, Randy Bellerjeau, Abe Markowitz, and Buddy De Franco, Nola's, New Yor
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 0x1af4f77f3ecf144aa7c369768c89ad88718425941d8bd1453fe9f62488be6116. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7c61912-1215-46cb-8831-efb64a61fdf2.json and https://artists.proofprofile.net/proofs/artist/b7c61912-1215-46cb-8831-efb64a61fdf2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).