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 0xa5952d99465dadbd2a751d29cae0a88915e9e415770c9b20d14b4f67b8112ead. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ebaa25f-1d9b-4bfc-9721-eeebce857d6c.json and https://artists.proofprofile.net/proofs/artist/5ebaa25f-1d9b-4bfc-9721-eeebce857d6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).