Federico Agostini (born 1959) is an Italian violinist renowned as a soloist, chamber musician and teacher. Early life Agostini was born in Trieste, Italy. After early training with his grandfather,
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 0x61ddc6eb3e981c1e743a927be7342819877a571835cf4f19b728ae0fcde7635f. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e37807c-6d7c-4459-a690-53e1b2276544.json and https://artists.proofprofile.net/proofs/artist/8e37807c-6d7c-4459-a690-53e1b2276544.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Concerto For Violin And Strings In F Minor, Op. 8, No. 4, RV 297 "L'inverno": 2. Largo
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 0xe1a29f96cf33cc90bfa0aec91d2265bf5339d779986faecc867f2cdd8105ae26. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NLA508804812 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9a01f0dd7803c1851a401fe4c9bce0bf13bf10ef95e124d0bc2a6e02faddfe. 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/GBBBC2200602 — a six-check JSON result.
Concerto grosso in B flat, Op. 6, No. 7: 1. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfee5b0712e98c9f0cc9adc016997f869e7099480afc2f5687dd191ff72962e. 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/NLA508603130 — a six-check JSON result.
Concerto grosso in B flat, Op. 6, No. 7: 2. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210994f6c66877a82083ef701d084b1254c67523c08728ebc2fcd2b29a05321c. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/NLA508603131 — a six-check JSON result.
Concerto grosso in B flat, Op. 6, No. 7: 4. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b61f91ba5100b04f80b3aad2122f04979b771e5df6e02cbd73a201a21c6f2f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NLA508603133 — a six-check JSON result.
Concerto grosso in B flat, Op. 6, No. 7: 5. Hornpipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed6cb2ccd86a1a7796299d7667edf5b62eb2ced7dbb5bb84794935923c1afe5. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NLA508603134 — a six-check JSON result.
Handel: Concerto grosso in A, Op.6, No.11: 3. Largo, e staccato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdac03db851c162ab20745967b969da5cd93ca0fec208e419663c117842c6cab. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLA508603155 — a six-check JSON result.
Concerto For Violin And Strings In G Minor, Op. 8, No. 2, RV 315, "L'estate": 1b. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfdcb8550c45ee149a5d6da2d8aa855ebc697e874a717a8b69d7dcb3b009290. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLA508804805 — a six-check JSON result.