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 0x711995f96307511d7f00eff9f908745d4b3786fe339e4afd6128ca841ba6ae09. 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/c74bc894-a951-4ad5-9fc4-c971cc4a8aac.json and https://artists.proofprofile.net/proofs/artist/c74bc894-a951-4ad5-9fc4-c971cc4a8aac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).