Marco Vitale is an Italian paralympic archer. He won the bronze medal at the Men's team recurve event and the silver medal at the Men's individual recurve at the 2008 Summer Paralympics in Beijing.
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 0xe1b9732334f651ec5097556fbd1b32de2c943943bac37a48479baf7480f1652b. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e39d740-1edb-4ad9-97be-ffc2f72ca5bc.json and https://artists.proofprofile.net/proofs/artist/8e39d740-1edb-4ad9-97be-ffc2f72ca5bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonata da camera No. 1 in C Minor, H 4920: I. 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 0xd8fc84a06a88494f418129fc66f8b510871fcb87f99785ef247138d3032037a5. 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/NLY332103866.
Sonata da camera No. 1 in C Minor, H 4920: II. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68754662f5903390e7092646591b94533faad3a37c22d5e0b0731f23e43e276a. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/NLY332103867.
Sonata da camera No. 1 in C Minor, H 4920: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d90e269c04f46da8309ec6b95b20c96ee1cdb0e6d046808d8980ea8082e0a1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NLY332103868.
Sonata da camera No. 1 in C Minor, H 4920: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6b25947e224df26cc20da456461405db99ccc90d7242de72acc944a9c86451. 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/NLY332103869.
Sonata a tre No. 8 in F Major, Op. 2: II. Allemanda Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7d8af217a3ee29a799e7bc46e06043f39c3a334433f7ddefa2eba4d38db54e. 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/NLY332103886.
Handel in Italy: Cantatas, Arias, Serenata
Il delirio amoroso in D Major, HWV 99: I. Introduzione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e459c0a5c6aecd9fc50aaaa6051e067095286e8925bbef918f0d568fcb529b. 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/NLY331704409.
Aminta e Fillide, HWV 83: Aria. Se vago rio (Aminta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0481c9d8bc163514cb839637b8abe9d7ee6439bc983d3ff1655ef75bc12960. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLY331104866.
Da quel giorno fatale, HWV 99: I. Introduzione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627bd3720a3db4c300854f5c1852df47a084613f34b08d13ebb1649e33a5af05. 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/NLY330905491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ee95f94bcf60fe290a6ec860322360c270a4e873fea74b27c2bfcd658c21b1. 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/NLY330901586.
La Resurrezione, HWV 47, Pt. 1: Aria "Caddi, e ver" (Lucifero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1005116bba731b25560782d82a06674ebd694f779365f1545057c9ce2bc852. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/NLY330901589.
La Resurrezione, HWV 47, Pt. 1: Aria "D'amor fu consiglio" (Angelo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135b697ba09c2c3140a2273377e2378154469ff3a1de9b4831c8a8c6078b27c9. 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/NLY330901592.
La Resurrezione, HWV 47, Pt. 1: Aria "Ferma l'ali" (Maddalena)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea765933d9e4086d8146b77dee3faa24f4afa16bb80898c081356c67133dd22f. 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/NLY330901596.