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 0xe5b7eaad59b39d4ce3b44fe6de1af8700a9891d026b9bd3f1856e0f4098de5d4. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07432339-7123-4e28-8cb2-31f7ac0b4fb8.json and https://artists.proofprofile.net/proofs/artist/07432339-7123-4e28-8cb2-31f7ac0b4fb8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).