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 0x588b83b0bb9cf89fdbafc77efed4e3216df7c25c61c548555c1c6170e1fcb4ec. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b060d19-f0b3-4106-9ac1-a66ecfd71e81.json and https://artists.proofprofile.net/proofs/artist/6b060d19-f0b3-4106-9ac1-a66ecfd71e81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).