thumb|Nouvelle Méthode, illustration. Bartolomeo Campagnoli (September 10, 1751 – November 6, 1827) was an Italian violinist and composer. Campagnoli was a virtuoso violinist who toured Europe propag
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 0x93e36f224da32d949f0b228f2a32dfd798593c61010132d49066699429e70ea1. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd1aeca5-c64c-40c9-98dc-e4dc3cdadbcc.json and https://artists.proofprofile.net/proofs/artist/cd1aeca5-c64c-40c9-98dc-e4dc3cdadbcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Campagnoli: Violin Concerto / Flute Concerto / Sinfonia Concertante
Campagnoli: Flute Concerto in G Major / Duos, Op. 2 (Excerpts)
Campagnoli: Sei Quartetti per flauto e archi
Campagnoli: 6 Duos for Flute and Violin, Op. 2
Bartolomeo Campagnoli: 6 Quartetti per flauto traverso, violino, viola e violoncello
Campagnoli: 41 Caprices for Viola, Op. 22, arranged for Viola & Piano by Carl Albert Tottmann