Francesco Buzzurro (born October 7, 1969, in Taormina, Italy) is an Italian guitarist. Biography Buzzurro began studying classical guitar at the age of six. He earned a diploma from the Bellini Conse
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 0x7d67af09d793a7838e5dc31e257e3708b0a194727cca51223868becf7502a173. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7517756c-3eb6-4286-b8d2-36cb855e9607.json and https://artists.proofprofile.net/proofs/artist/7517756c-3eb6-4286-b8d2-36cb855e9607.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).