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 0x00ed4b87f41c70b092901a88f7454c2b89a007c124bfbf0741649b7b69569cfe. 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/f18ddeec-c668-48e5-aa6e-c845689f73ae.json and https://artists.proofprofile.net/proofs/artist/f18ddeec-c668-48e5-aa6e-c845689f73ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Monteclair : 4ème Concert pour hautbois, clavecin & basse de viole - Cantates
Splendeurs de Versailles (Collection Château de Versailles)
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 0xc12418fa7dd0cbbb7aba5e5f913451ed06dca171126a5248be8f4131170accd1. 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/ES7899300101.
Second livre de pièces de clavecin, Ordre VI: No. 5, Les baricades mistérieuses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadd4e31b44e118458bfd3cda23be27c112005821d9373d507da7580d4f37b6f. 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/FR10S1771049.
Livre d'orgue: No. 7, Dialogue sur les grands jeux
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e6b43b7f0c0e870b61e6d019cc90e6ca4f840696ca39f041b8f3b7ec7a1b8. 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/FR10S1771050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292566e2c19433fdda84dc771c79c4689b00ddf398224f1533a9334ca27dbf3e. 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/FR10S1771051.
Les goûts-réunis. Grande sonate en trio "Le parnasse, ou l'apothéose de Corelli": No. 7, Remerciement de Corelli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d56c01d69e6af6c5f22e773031bcb997a4f365675e5dd97db26a7d3e4d74eb. 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/FR10S1771052.
Le bourgeois gentilhomme, LWV 43: XI. Marche pour la cérémonie des turcs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00fe74dc299d943309419a2c3f6a9f436377ac83a6170b04f8c69d1a44af1a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR10S1771058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88acb32a152af2d74aa63c8fe3dbfee30b5db16544ad7dc6b1edbab4e1e51d9e. 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/FR50X0101603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8e83fb3867c7ea2c5cab667ff8b62f065be92d0eb45c394c2a4e19ee51c1fc. 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/FR50X0101604.
Le bourgeois gentilhomme, LWV 43: Marche pour la cérémonie des Turcs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f77afc339c445b648e9fc4c8cdc176c4f8b02ec3b8cb36181015415236234. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/FR50X0101605.
Armide, LWV 71: Passacaille à 2 clavecins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5721bbcd3604daa7cb875f9e0ed375bc9aa40c5c48faa2f9b883bfb52bc7ace1. 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/FR50X0101608.
Le bourgeois gentilhomme, LWV 43: Reprise de la marche pour la cérémonie des Turcs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5601d6fba6227225af1b05a7d9f476d5ecb3ebd3d4b0646f69ed53bf54fc69. 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/FR50X0101610.
Psaumes du XVIème siècle "Le Psautier de Genève" (Psalms of the 16th Century)
Psaume 7: Mon Dieu j'ay en toy esperance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9b6c7555ec0dad3a0eaee9aee8e5f2f3b9ea6c3dc0b4ae1d2538a941b1edb7. 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/CH2751100103.
The Faces of Melancholy - Ayres both Grave and Light for Viols or other Musicall Instruments
Il primo libro di canzone, sinfonie, fantasie: Folias echa para mi Senora Dona Tarolilla de Carallenos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb47d4a451ce1ade1d2d1b889dae4ace757a42458b0896cb78c5ce63816cf5. 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/CH1491124801.
Il primo libro di canzone, sinfonie, fantasie: Passacalle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf976f7e498025c177a359525eafa3257203cc55f2051c136297711604610531. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/CH1491124803.
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
Renaissance Music: Selva di Varii Passaggi
François Couperin: Pièces de violes 1728
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f659075b9a34085635e659d43563ee59e9032153f353a7a2874dd1fd3fc80a. 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/USA561394233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9811aeddf91cfe095585010ef87cac22a76542cadf6ae215e0a82287918abcb. 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/USA561394234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e07e880396991bf4331318dd9eac7111e70e350149010c28ef85fb3e518c58. 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/USA561394235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd62815e849a35fd913bcc18f90ae07d435f9eb7c7909d2993c9900f2fee405. 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/USA561394236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba34d5817ec9b31e168668ecd4d567dfbe72ef26222d711760348020bf209f5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA561394237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3770eddb649120cebdf816a1dc9bd60a53f50b6b78b9a06c93cf12c5c29c295d. 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/USA561394238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e80dca16376e1576670d9f946e40abc4775d267d5ad8cece2a32889833b97f3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA561394239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b92398a54990c24b4d2a44632117252a1b859bfe4ecf900fd13db9abf3287ff. 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/USA561394240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be0612a435fe5244132f0f7e723d62647a7997b088b75f5caebb443e989bcdf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA561394241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771ce908c0be82e8d1fbf7f5cc66fa450a2f05566987a6910d60f05333808b72. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA561394242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eea05ff79cf70089462aef8a91c0cbce03bc16f7bf8067a3dcf2ea58e286ea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA561394243.