1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac65bddcf521682f68679db375a7da405383cec567ccb8f5e8b498ca15bbd67. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a04b5749-0ac4-48e0-a915-0d7e49fa6c76.json and https://artists.proofprofile.net/proofs/artist/a04b5749-0ac4-48e0-a915-0d7e49fa6c76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Suite bergamasque, L. 75: No. 3, Clair de lune