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 0x72837731d6e45bf3155ec2642af71a18e57fc1a5cfec0d020649873a0fc80672. 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/b2e69bde-5ff5-4a69-860c-90ff17dcfb3d.json and https://artists.proofprofile.net/proofs/artist/b2e69bde-5ff5-4a69-860c-90ff17dcfb3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).