Jeanfrançois Prins (born 18 February 1967) is a Belgian jazz guitarist, composer, vocalist and record producer. He has spent many years between New York City and Berlin where he was leading the Jazz
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xe98afa312ee9ece2a961fe130ac6fecc490942367ad923b12a15592b351bb672. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91608c33-5906-46e1-93d1-b369f4e77152.json and https://artists.proofprofile.net/proofs/artist/91608c33-5906-46e1-93d1-b369f4e77152.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).