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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5de09a95968547920b0b673cb5d5e01a9dcac82489255a3292bbe8a98cfdf47. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/797b3e8d-99c1-472f-9bb4-1cc71ee80e70.json and https://artists.proofprofile.net/proofs/artist/797b3e8d-99c1-472f-9bb4-1cc71ee80e70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).