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 0x134b9f84555d95e1eb960ddd70158d91e8a7ce0b3626bd5471742072b2bb39fd. Chain 2 (Bitcoin): anchored in block 953915 (2026-06-16T08:36:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a63031c-05a8-4115-8d5a-efb0ed10bc5b.json and https://artists.proofprofile.net/proofs/artist/1a63031c-05a8-4115-8d5a-efb0ed10bc5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).