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 0x7174f9eeaf29fa25d0d722799e388ec5e8cb42fa68e16cc36eaba84db0d35f26. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2fec831-62c9-40f5-bdd0-fb47747bd1ab.json and https://artists.proofprofile.net/proofs/artist/c2fec831-62c9-40f5-bdd0-fb47747bd1ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb8b5914315124548d18b33812956a27d5835f8c3192e72037d3fa2d47c2512eb. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/FROV61309401.
Amadis, Prologue: Ah ! J'entends un bruit qui nous presse (Chœur, Urgande et Alquif)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dba6b6746bb8ed5036adc7b5feac13d539d225af40a43cd579d20c8b8db0f04. 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/FROV61309402.
Amadis, Prologue: Second air "Les plaisirs nous suivront désormais" (une des suivantes d'Urgande)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a07383ef050601f8f215d7bd6fcb82fa8bb36d7fe5de4f23900acc8372640d. 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/FROV61309404.
Scylla et Glaucus, Op. 11: Prologue. Air gracieux pour les Peuples d’Amathonte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae500f88a05fae1d08f85ddbc838906ebfc2408e3045c05b8877bf40e8168ca. 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/ES7892301204.
Scylla et Glaucus, Op. 11: Prologue. Que, digne fils du plus grand des vainqueurs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a5d2f16fb531d7403c7089bce4f0617248f93dd6e7a16c60fd01b2b14a8a68. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES7892301212.
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
Télémaque & Calypso, Prologue: Ouverture (I)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fda20785437291d6c0b634298e517fa060ed70c41d4275169b4cea8456b38b. 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/FXR522412801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e6223719146e4da2cd5123dcc0db96400dfb9b492e3744f26e2a2133ab5d75. 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/FROV61310901.
Zaïs, Prologue, Scène 2: Chantez oiseaux, chantez votre aimable ramage (Une Sylphide)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7619788544068a2bf091692eb82bfcf75bfaeb046c086a7dddafb22968989f. 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/FROV61310906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1451a9c3a8cc93d1653d30e6137fc7e48b356fbed5a2c900c8987f82a29d77a. 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/FROV61310914.
Le Carnaval du Parnasse, Act I Scene 2: Récit. Sous l’habit d’un berger, c’est Apollon ! (Momus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd74b0483a576c9dbc829955cdb86433e3b9baafcd468639ec806f96573ec56. 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/FXR522412217.
Le Carnaval du Parnasse, Prologue Scene 1: Ariette. Que ce beau jour promet d’heureux instants (Clarice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63090ee28187da19e892c612c0d93d6e286d5d0cfc5c43ecd9427b312ace8e9. 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/FXR522412202.
Le Carnaval du Parnasse, Prologue Scene 1: Prélude & Récit. Oiseaux, habitants de ces bois (Clarice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9217b435e93d320d5274e51f695afc3bab7b35c2611326b76531359b77b1083. 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/FXR522412203.
French Baroque Cantatas: Ariane & Orphée
Clérambault: Miserere - Couperin: Leçons de ténèbres (Recorded at La Chapelle Royale du Château de Versailles)
Miserere mei Deus, C.116: II. Quoniam iniquitatem meam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941bdf2888594e1b1799e8cf5eeb2efa6db002889f4ce0f15d8088d00fe5e699. 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/FR50X1395702.
Leçons de ténèbres, Première leçon pour le mercredy: I. Incipit Lamentation Jeremiæ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9b7b300b0b2add578f852a4039870cb26c38b8154bada6c55a6e2bf2c2523e. 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/FR50X1395707.
Leçons de ténèbres, Première leçon pour le mercredy: II. Beth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38779c1b4fcf2d8d3c91d6f8ce54307026841aacc90382209a6458ecd834e511. 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/FR50X1395708.
Leçons de ténèbres, Troisième leçon pour le mercredy: III. Lamed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d97a3602059cae7883fa5581954674a0c1fa5254027e534b02a88269f94c2. 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/FR50X1395720.
Leçons de ténèbres, Troisième leçon pour le mercredy: IV. Mem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b3077dcdf40dc3c0aa85418861b5aa9836283baa9f0af1a25bb82901afa52e. 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/FR50X1395721.
Miserere mei Deus, C.116: III. Asperges me hyssopo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec54c9168e4572bb0cb90596ed0dc20b9853c998d7aae9924e5a0bfe1096222. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR50X1395703.
Leçons de ténèbres, Troisième leçon pour le mercredy: I. Jod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fa875b3039abb9eb989ca6684ee55bfd517d0b6d8487031e36bb5911722751. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR50X1395718.
Leçons de ténèbres, Troisième leçon pour le mercredy: II. Caph
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047b7d47db864f711f6e9d939f05d55689b1449eab9cab224878233b75973b7d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR50X1395719.
Leçons de ténèbres, Troisième leçon pour le mercredy: V. Nun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf847e92d50b9caa16669fb6eec0886d3ec0ba9e5b08d09b7d6546ba423d590b4. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FR50X1395722.
Leçons de ténèbres, Troisième leçon pour le mercredy: VI. Jerusalem, convertere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec0181c467339488d478eae6af5d36f676cea7d20b928b5c012a1f6a39cb099. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR50X1395723.
Splendeurs de Versailles (Collection Château de Versailles)