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 0x4916847d07fb62597e5b19e40c6de8ec340f52fb38e95571a01d1a98e8414ab6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8d6d4db-9d3d-4563-8373-a505759bccc9.json and https://artists.proofprofile.net/proofs/artist/b8d6d4db-9d3d-4563-8373-a505759bccc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Martini: Musiche per il triduo in onore del beato Giuseppe da Copertino (Live)
La principessa fedele: Aria: Troppo è timido il tuo core
Melani: L'empio punito (Excerpts) [Live]
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 0xb5f814848d782b71b4c22affa8309cb0fa2d13c2e553c31bc173475102c6e47c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEXF62412201.
Las Cuatro Estaciones Porteñas: II. Invierno Porteño
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe791a331ecf93a1b179898b7564a82700e4d4d0629cc44053c7d6f0eff0a9b99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITB001900563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b0c3adc46255c626cb33796c941701786fc9f83df929654cb8dc6580223cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITB001900456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10481ed3220f777c0c17db0a05defe7f5893359df7514a4144320baa0f8c93c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITB001900457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7d8414afd4f5c25bcb3a17dd95136269afc6cfff4cb917707c180d88668b71. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001900455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f47054d9fdfac3c818fcb1af86726573cac893a5203ec663f138b8356b9e926. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSD11500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30d2418174b7e4d0b85c4b1c4959e6bb31cd67317b7f7dabc903902575c1f0e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITB001900564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d7891cc1413bbb7d2c45ae001ba3c2655f4425fb1011bca93504a69dee668a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001600386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b449bcc93120676996e8303d55dadacd0c8987f780f42838137952c69ec4e3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001600396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604e21666b2c6b4f9c1f865121d7dd00dfed3a6d56fa9a145a177b6f7a3da0d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSD11500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc35d95eb1b68a067f0d8cc26a1c39a7b437e12f7ab2223730cdff089248fa6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001600385.
La Traviata - Libiamo ne`lieti calici - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ddd96debe12ed3f7edb22a3ae5c09c3a020ea23fc750554cc2bd08b428cb2d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITB001600406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1e147611ad95507eb73fe5c9fa750fcbe04890ebb2bde3f8c722b307d7cf90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d9e2f098632b80360cb2256b5df100fc68c69e180f3efc481565ce6a2a2594. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001900052.
Musica che resta (feat. Alessandro Quarta) - Live in Matera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb251947a462935859b4783b518c85c172b53641c8ea8d7351248cc378ecadbae. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001900458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c5833eb1345d1f2955b535ddb95dc63a978f454d8f0f0dfeb2076ad77fc2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001900565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896619bc45a1ba113c1356e6c14c6ff92bbc1c14d3f4cde3606496e9efb21e9d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819143cb9ac3608b3831f9ea90f69850a1bf27aacf8f955f5e000fc7ad9cce04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb5944e21af055190e38d52e90d17e64d2003fb4af5bc362183142a9bd181b0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28019dcf92436fd8348cffbf77eb552e6cf17d3359eef60c5a1c14343ef8695. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITB001900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f6937410184a1308645e473c77bdc63fa77acc037781f9252be6c6b8f03ae0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSD11500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d024127e551060c31e838d35feae90895b72388872f156c786d93e16b50a11f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITB001900460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3401496644106a6c5978d9befcd2d56931a968399e8166bfd268b2d159093736. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001900453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3be3334ff3ff64fb5504d5fa4ebd1be6d052f2710ea04beb355f2feacec3c48. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITB001900461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea32bfed59e79861a6996971ebca77c21d04981842816030bcf8321e4d36d248. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM71027069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250a541876c6bded94a30a663ee0c9e4acdea2f07ffbfba0f4f2f345716ed71a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUM71311810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c9876811e0c56665ce2d00a7faba06c7a8a5616ebd248bebab4a0166dd8acb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71306923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384e99326fe127c333d48bc23d6e9d647ff5bd2c899d5263a4a723969189fd51. 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/ITQI52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676e1fd64cf5f2b940cc2b8bf0a35bf37009abb9cb40e49a88837af9082aebc2. 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/ITQI52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd283290199307e5f0147352887cd35ac2e30c3cba835323110e8816aceefb40. 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/ITQI52400003.
Nemiche per la pelle (Original Motion Picture Soundtrack)