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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25d2c56e01aaeefb79ad5ae16a3369b9acbbf26bdfde28382ed6758ce724da8. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58288cca-bbdf-48f6-93c2-a92f36304c31.json and https://artists.proofprofile.net/proofs/artist/58288cca-bbdf-48f6-93c2-a92f36304c31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Antonioni, Cardi, Serino: Music for Viola & Strings
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68021828dd82c2d7755f0380a8f86fb43615ec0c4bb571faa831c26c2f60376a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLY332000586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3cd0664e11592b3185294ede67ecef025594ff9ba615b7a4a87cd563d7ef6c. 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/NLY331801337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1ebce4d3f87c3657848da54116237f18599bf6e024e1020988e22415b53c40. 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/NLY331700759.
Sonata in A Major, Kk. 208: Adagio e cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7e5ed663b200bf425a4f261333082df10b6cc1948fbf27533719db47174165. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLY330904666.
Violin Recital: Ricci, Ruggiero - Bach, J.S. / Mattheson / Paganini / Sarasate / Ysaye / Tchaikovsky / Wieniawski (A Life for the Violin)
Wachet auf, ruft uns die Stimme, BWV 140, 645
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2b723877ca17f37a410c711aee7d0d818de9b97959e6ff65ef3b2b858f6d02. 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/NLY331904376.
Preludio from Cello Suite No. 1 in G Major, BWV 1007
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c8e8e87d8654f37f79d4b7cbff0798142011fd78f4d6a5f1fd3f4af1de4ea. 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/NLY332201677.
Choral No. 42, BWV 513: I. O Ewigkeit, du Donnerwort
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c40a4e8b7f19d63e1b1078e505373d2b74c710308ee16daa448b49be7358a1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLY331904377.
Präludium, BWV 934 from Johann Peter Kellner's Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2140f8be52d8482674ea7849f1c768858ce57d4764b12cd3c700cc99a3f6b0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLY332201996.
Ciaccona from Violin Partita No. 2 in D Minor, BWV 1004
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9424c7f64561ad30f46fb47d5f8d4226f8c8bcdb89771b6b6a4a5ba8865af64f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLY332201679.
Präludium, BWV 938 from Johann Peter Kellner's Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98db137119488b2e6c826ac748e3e042a712c4eb07575b355e90908c7e4ccd49. 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/NLY332201998.
Aria from Suite No. 3 in D Major, BWV 1068
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6d1b5501334ae7044789fedf93394f0b82e1c38247ed5bd90b80a8fbcd9343. 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/NLY332201681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e21bdb9545e1112a9eb58a24b2c7749e8b6b582dea2db17eb033875e3ef83d5. 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/NLY331904381.
Largo from Concerto for Harpsichord & Strings in F Minor, BWV 1056
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6c9d8f92fdb13f74eb1ea2bab9978cee653a29176534e1ef81a24de33bb689. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/NLY332201682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a2bc3b2a419860de617d4e624a60d21b969b919422c9853eea4b210570a9b2. 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/NLY331904382.
Gavotte from Cello Suite No. 6 in D Major, BWV 1012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745b936915568a9439a89dd010f7e13c40fcf438eb81e6f8e27a3d033ba0f96f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NLY332201683.
French Suite No. 3, BWV 814: III. Präludium, BWV 942
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc08f4cc02cf4631f521c98b9a7689e0ad7446ccc66b6186cd3cccabc125e98e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLY332202001.
French Suite No. 3, BWV 814: IV. Präludium, BWV 999
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dad7000cdc02201252f48e2a366635bd327d7c1833148d3c4135ae08ad37daf. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/NLY332202002.
Siciliano from Violin Sonata No. 1 in G Minor, BWV 1001
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4a4aea567ecfbd2af6b623ea26256e1819c5b3486a0006ad21f53abd69778a. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NLY332201685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024684f8070a8a2053fc3777e9a6619d45082c88533e55666ed7843bbd855452. 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/NLY332202003.
Chorale-Prelude "Jesu bleibet meine Freude", BWV 147
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2086836541dba754ab471169f447ab65fb499cca95dcc3225161a144364f1e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY332201687.
French Suite No. 4 in E-Flat Major, BWV 815: I. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7fd213d18b86e2cc8fbc7747ab6e6d43644a07dabc7b734b0378479b574a1b. 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/NLY332202005.
Menuet, BWV 841 from Clavier-Büchlein vor Wilhelm Friedemann Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af0dbc34abc8ff415f872c2dbfa941a2cf12755e2a1ebb6a70dc92b55d618ae. 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/NLY332202009.
Praeambulum, BWV 924 from Clavier-Büchlein vor Wilhelm Friedemann Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50147e2b705dbf430d56808857ddb6cc37d9a8c6daf76d364b530d18847496b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLY332202011.
Fantasia No. 12, BWV 792 from Clavier-Büchlein vor Wilhelm Friedemann Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d16d68da0d42ee2328dd024ec239e0336437e048a448448c56980f006986a6. 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/NLY332202012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ac176da27ee2cceb524a1dd2944c332496086e102c900ac693e3988570c9f5. 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/NLY332202016.
Marche, BWV Anh. 122 from Clavier-Büchlein vor Anna Magdalena Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2feb99af63c199492818712f50137c18237b35c23603b49b2764632683da41a. 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/NLY332202017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb370d293e5f2256654b5d6194be5d9b21e3737ef2ddad22db04e640ff03060df. 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/NLY332202020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c27671170dd0d3d30cc25939ba5cb8d88c1d714706b7fa6fa6cf0e6c60371a. 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/NLY332202022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6d1b5501334ae7044789fedf93394f0b82e1c38247ed5bd90b80a8fbcd9343. 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/NLY332201681.
Mauro Giuliani: Guitar Solo and Chamber Music
Paganini: Quartetto No. 7 - Terzetto in re maggiore - Terzetto concertante in re maggiore - Sonata concertata in la maggiore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2140f8be52d8482674ea7849f1c768858ce57d4764b12cd3c700cc99a3f6b0. 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/NLY332201996.