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 0xdfa7e3032fb357c5fff96503d8834b2bbbbd50a17dcc3310b763d6bcbef5d716. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b3ebcf5-82a3-4efd-8ea9-0a282b5abb48.json and https://artists.proofprofile.net/proofs/artist/0b3ebcf5-82a3-4efd-8ea9-0a282b5abb48.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).