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 0xa56e512e295938633a4e2737cd301b4481280d2aae08e8dd6670487613a6f651. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e07a0ba-7548-4b0b-86ae-1991c23903c4.json and https://artists.proofprofile.net/proofs/artist/7e07a0ba-7548-4b0b-86ae-1991c23903c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Delibes: Lakmé, Act 1: "Dôme épais le jasmin à la rose s'assemble" (Lakmé, Mallika)
Choeurs du Théâtre National De l'Opéra-Comique, Paris
Orchestre Du Theatre National De L'Opera Comique
Orchestre du Theatre National de IOpera-Comique
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 0x1b899220a41524325b45092a1fe79b965044efb48245ad28ba88dd64d644ca32. 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/FRZ110200044.
Delibes: Lakmé, Act 1: "Viens, Mallika" (Lakmé, Mallika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ffee8f380557834b9b6467d616a6882397425e3be4ffe9a8fd3307188ccdb8. 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/FRZ110200043.
Delibes: Lakmé, Act 1: "À l'heure accoutumée" (Mallika, Hadji, Chorus, Nilakantha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a81b960eebe3c9cbc9bb3ae9cbd5b133325f24fbc8f2edbfd90001c70f721d8. 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/FRZ110200040.
Delibes: Lakmé, Act 1: "Lakmé, c'est toi qui nous protèges !" (Nilakantha, Lakmé, Hadji, Mallika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877316e46eaa1d3d3a7dac217cb71f33172397dcaf726b58e6103781209fef69. 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/FRZ110200042.
Delibes: Lakmé, Act 1: "Miss Rose, Miss Ellen, respectez les clôtures !" (Mrs Bentson, Ellen, Rose, Gérald, Frédéric)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab5711c2437ae02dab28e5c880cc40cac6f9d3c0dc99385827e87504e7f28d9. 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/FRZ110200045.
Delibes: Lakmé, Act 1: "Quand une femme est si jolie" (Mrs Bentson, Ellen, Rose, Gérald, Frédéric)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d4b28bcb68d6ea97c529913fe3bf112b3f1fcfee3943eb16caaa3238d7346f. 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/FRZ110200046.
Delibes: Lakmé, Act 1: "Nous commettons un sacrilège" (Mrs Bentson, Ellen, Rose, Gérald, Frédéric)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7b3efe2a40b93c47f257567f3d74651bf956823eb203e4c907ffeeea1e47ba. 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/FRZ110200047.
Delibes: Lakmé, Act 1: "Prendre le dessin d'un bijou" (Gérald)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161c908bb7f7c92cb3036773958acf89929b54fd2d74328517506f678d054c6d. 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/FRZ110200048.
Debussy: Lakmé, Act 1: "Fantaisie aux divins mensonges" (Gérald)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e3f07506be89bad08118adc11e3dac66a0ef439e220b5e161108cde9b564a7. 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/FRZ110200049.
Delibes: Lakmé, Act 1: "Les fleurs me paraissent plus belles" (Lakmé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704e7f3d69f1434d1039a106a79f4c0831c109946680db5b7421b2c70f2ff11b. 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/FRZ110200051.
Delibes: Lakmé, Act 1: "C'est le dieu de la jeunesse" (Lakmé, Gérald)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e52c442e25e74bd3b33c3bbd10568edb86acf14dce792965faa30292d515e0. 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/FRZ110200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf344e142be31fd3f9ff38a70662aa8994eefd7b7ba41fc7c08ec9e4a153d59. 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/FRZ110200062.
Delibes: Lakmé, Act 1: "Pourquoi dans les grands bois" (Lakmé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6337dda64fd8420cebc52ff49584faa554d920c86f400cdedeb830c65a489fd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRZ110200052.
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
Delibes: Lakmé, Act 1: "Non ! je ne veux pas toucher" (Gérald, Lakmé, Mallika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfdb4b51b31aee67e16b668c55232d9383bbc3a06f1db20120b2148cb20c047. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FRZ110200050.
Delibes: Lakmé, Act 2: "Lakmé, ton doux regard se voile" (Nilakantha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01d31c3a31347a6d683a14b722aab25a5af08e774f74c4db3ac229716ef499f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:44:28Z), 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/FRZ110200069.
Delibes: Lakmé, Act 1: "Ah ! Mallika ! Mallika !" (Lakmé, Mallika, Hadji)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b558db1664c405456923ba70658329beeff822b4240b6b3f258a0434a23d78c. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/FRZ110200053.
Delibes: Lakmé, Act 1: "D'où viens-tu ? Que veux-tu ?" (Lakmé, Gérald)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c5127c8fe59929a35c301b990ee09b6d6376a373501bb74170522e05a097da. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FRZ110200054.
Delibes: Lakmé, Act 1: "Viens ! là ! là !" (Hadji, Nilakantha, Lakmé, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73696d69ef082e7a9bbdd8acd5192aef90af13d9d712f4a655ca1e55dd68983e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FRZ110200056.
Delibes: Lakmé, Act 2: "Enfin ! Nous aurons du silence !" (Mrs Bentson, Frédéric, Rose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdf24e4ef1fda78711de1ada3a48f740519a95a736ee77d390cca312d3cd9c8. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FRZ110200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e9602718b899f533fa8b50cb518fa7052a79022dc3bcd40842d3f9d75afc98. 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/FRZ110200063.