Federigo Fiorillo (baptized 1 June 1755 Brunswick, Germany, died after 1823) was a mandolinist and composer, who wrote thirty-six caprices for violin, also called études.Philip J. Bone, The Guitar and
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d2fde0a46c506b0ce9da0b9adf4bb1602ec5eecbeb3fb620fc5bafddac26cf. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ababec0-61f0-445d-8891-d0767c3a80e9.json and https://artists.proofprofile.net/proofs/artist/4ababec0-61f0-445d-8891-d0767c3a80e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fiorillo: Six quatuors pour Flute, Violon, Viola & Violoncelle
Fiorillo: Serenatas Nos. 1-3 & Sonata for Harp and Flute, Op. 36, No. 2
Fiorillo: Violin Concerto, Sinfonia Concertante
Federigo Fiorillo: Six Quatuors Concertants (For Flute, Violin, Viola and Cello)
Fiorillo: 36 Caprices, Op. 3 for Violin, Transcribed for Viola by Marco Misciagna