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 0xfcab180d72d80598d235cd171b8dd09a7124e902d14d8950ae4f20204358ab34. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61c8015e-4a58-4826-b871-8674d57e14b6.json and https://artists.proofprofile.net/proofs/artist/61c8015e-4a58-4826-b871-8674d57e14b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rachel, quand du seigneur la grace tutélaire
Se M'Ami Ancor…Al Nostri Monti Ritornermo
La Fleur Que Tu M'Avais Jetee (Flower Song)