Marcus Bonfanti (born 5 May 1983) is a British blues singer, songwriter and guitarist. He has released three albums and one EP, and works both as a solo musician and, from 2014 until 2024, as the fron
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 0x4b64d0436a3b21aeb7542ab7576308fe71e30a612fa2e7ad9fee8cfa2270399c. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f660a4a-6abf-46d1-912d-c1902da09f9d.json and https://artists.proofprofile.net/proofs/artist/2f660a4a-6abf-46d1-912d-c1902da09f9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).