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 0xfda5fa2b2ae8c95d8d608804af02dd4d84b2f0461cd224804f56ba2a02fb1ce0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c64da69-42bd-4629-9ba6-786b5dc3d337.json and https://artists.proofprofile.net/proofs/artist/2c64da69-42bd-4629-9ba6-786b5dc3d337.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
S'Amours ne fait par sa grace adoucir (Ballade 1)