Fabio Bidini (born 11 June, 1968) is an Italian pianist. He was a top prize winner at the Ferruccio Busoni International Piano Competition in 1992 and the Van Cliburn International Piano Competition i
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 0xe4775940d65ec3f9a4dd04e02cdcac7e2d778166e210a2d7ec5934b078a68bb8. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc8c957f-2a8c-4e9f-a6bf-3cba99cab61b.json and https://artists.proofprofile.net/proofs/artist/dc8c957f-2a8c-4e9f-a6bf-3cba99cab61b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schubert & Brahms & Rachmaninoff: Four Hands Piano Recital (Recital Pianoforte a quattro mani)