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 0x62ccbbb1f280332c1d1a9a9d1c6e77b6a41fae5f6b1d60ebc634426c8e56c23b. Chain 2 (Bitcoin): anchored in block 953689 (2026-06-14T20:27:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69f4cda2-682e-4a8a-99b0-b2a9cf4bcc4b.json and https://artists.proofprofile.net/proofs/artist/69f4cda2-682e-4a8a-99b0-b2a9cf4bcc4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).