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 0x720a257d53d3dc6bf30dbfad034074c99103f76762f876b25d3782bb3605ddc0. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/062fbe2e-3e85-4e2c-8a70-ca9c3856021a.json and https://artists.proofprofile.net/proofs/artist/062fbe2e-3e85-4e2c-8a70-ca9c3856021a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).