Antonio Brunelli (20 December 1577 – 19 November 1630) was an Italian composer and theorist of the early Baroque period. He was a student of Giovanni Maria Nanino and served as the organist at San Mi
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 0xe121a3b880bd0210d3ebd4d21118e9233e11bb4af6c9949a70ba6fb9cf381c08. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f28a1a73-927a-4918-b5e9-ac648b1bbc2e.json and https://artists.proofprofile.net/proofs/artist/f28a1a73-927a-4918-b5e9-ac648b1bbc2e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Arie, Scherzi, Canzonette e Madrigali (1613-1616)
All'imperio d'Amore: 8. Non havea Febo ancora a voce sola
Stravaganza d'Amore! The Birth of Opera at the Medici Court
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x3c782dacb2454973a7f98e391d3cd032a417347fbe946cd2b2f67d6084c9fb50. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR7JM1662080 — a six-check JSON result.
Florid songs for cornetto around 1600: la Bella Minuta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab278761e8429ff6abfee9f0bd7b32eeeee46eb1ce772afc8e1f2ce9f6e92f4b. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEE021197911 — a six-check JSON result.