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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bbb0695a4450b3692dd0e664246d6c5bf1633c711df1f0f33c76a9b63b9ffb. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8709ea3-f6ab-426e-83d2-c86565b78ae1.json and https://artists.proofprofile.net/proofs/artist/b8709ea3-f6ab-426e-83d2-c86565b78ae1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).