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 0x846f6034101f0844245756d7094a6a48e50eb99081bcfa3692d694e2e09ab13a. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e325dfa-60d5-45b4-a50c-4f09e46824d7.json and https://artists.proofprofile.net/proofs/artist/4e325dfa-60d5-45b4-a50c-4f09e46824d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les vingt plus belles chansons de La Réunion (Ile de La Réunion)
Jean Albany : 25ème anniversaire - Zamal