thumb|180px Francesco Nicolosi (born 7 December 1954) is an Italian pianist. Biography Nicolosi was born in Catania, Italy. He has lived in Naples, Italy since 1973 where he studied with Vincenzo V
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 0xd87b6872183d54014e911b9fd9cce4b30539c5f73113be2abe68b29ec37a74ec. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e07f2917-c531-4eca-a0a5-9f41394e03df.json and https://artists.proofprofile.net/proofs/artist/e07f2917-c531-4eca-a0a5-9f41394e03df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il Violino che ha incantato milioni di italiani
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 0xc320df9c487ada0d4954daff870a6b16ff6b3017afb718110475179a9e70043e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5408b49db3688b563d506709cdd46d2f523db9ff07c27c8a4f44ffceb381f4a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c225d171b7acfe2e649b949c353f319c1576b91ba4037278d20caa28221af00. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05845084b80794f1fd899db08769a6185ae2f97bb46a337e0de6e069dbdad4fb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43470ae62275af2dc2128734c37a9dc556960d9255a0f5d2e5a4ae30967f33bf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdafafa8030f25bd47cce6f988612d50a978a50674bca943f08d1cc7026c0745. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36292eaf3fa0a3ce3b9682b24d4757371ffd747c5681cb3f38e19ed59bc5bd50. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9606494fbd5a5d0fab27b0eb0a461a15a942b125796a4cccfaf786a5d60b9f3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91737d912db83d45caaddd06affb2edd18b9b975c5de00118042d835ea4dce8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77346653819284cda4bc7bf2418b1af1baefbc5bc3a43cb567e0621b3e8d78a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFY2184465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9e608bc80e5cbecd2442efb2b7deb2798b96e2d16f6603a61d26aefd7aba7a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca12ee8b6793655c40b24257af1d6ca8865146f32bdc35a9910877511cbfec57. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01be79ba4a646fb80a5983c13bf4f8d711fbcd6c3d39676df60df47962b4b919. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7255ecbd7d616ed2b00962a3181e21234c5a3d3d7c4247c9531aa9ba6ee8aa15. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417618790cd030cf192568ae75d294ea965f99799face975a13f5f3b0727f2c4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b73e62ad712c48fc8fb310d01a4c201fd775f927f360cdf3154c49066aeb2e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc1ddecc4762b7814decd15915ea9aeb5018fa4bd4cc6419473a2fa78c2de80. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5b497ed5ae187137d6c6cb1c944cb702349ea5c6fbc987caeb0274f707b455. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b05fab927950f1ec3b10f5e1a7204139c8aaa77dcf74fc80cbd5dd4939f20f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96983cea32bd23e67a31a4d79e153e60701061c9b5114b41645d2c885b3ff00. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe910bf189f1cb850ebb2c12408afcd1da483ff53f38c6031f569e6a31984416a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab0a2e65e10d2d327f9337ad7106066fc9fe6df647d4f70c39c6e5eb28b03ce. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4e42ece1bc2e45a4810baa04b8b5f170b974bb2e570c71da8623a064741652. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12cecad38c3e1246c901898cd8bccbf5e58fc2c38a488b64f3e74e4499a5899. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK660810020.