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 0x362706f3fb287b169d555f53aa6f5908af9397b2944c2cc61c298cc20c355bd6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7e71264-50e6-4e0c-9b26-5569241e44ce.json and https://artists.proofprofile.net/proofs/artist/a7e71264-50e6-4e0c-9b26-5569241e44ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LE CHAMPAGNE FAIT DES BULLES - INSTRUMENTAL