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 0xfd1d43352239ae0244c40db9b6d4966d86098686e9506d452f7d7d643e64f86f. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c1ecfb5-aa56-49ae-ade1-b3db0d6fe2e7.json and https://artists.proofprofile.net/proofs/artist/9c1ecfb5-aa56-49ae-ade1-b3db0d6fe2e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).