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 0x16731627ad4580971c5cd1ba85059627bece28d67bbfb3069621f149c511cfcf. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf3f6ea5-5cc5-4646-8207-042ecb5d69b8.json and https://artists.proofprofile.net/proofs/artist/bf3f6ea5-5cc5-4646-8207-042ecb5d69b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Delibes: Lakmé, Act 1: "Miss Rose, Miss Ellen, respectez les clôtures !" (Mrs Bentson, Ellen, Rose, Gérald, Frédéric)
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 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.
Lakmé., Act One: Dôme épais le jasmin à la rose s'assemble (Lakmé/Mallika)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b899220a41524325b45092a1fe79b965044efb48245ad28ba88dd64d644ca32. 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/FRZ110200044.
Delibes: Lakmé, Act 2: "Ces égoïstes peu formalistes" (Mrs Bentson, Chorus, Frédéric, Rose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295574c4e4f4c7b54b2b06a6982a04b37994e8cec6d2f24c4d174c58c1aaca13. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRZ110200059.
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 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.
Delibes: Lakmé, Act 2: "Voyez donc ce vieillard et cette jeune fille !" (Rose, Frédéric, Mrs Bentson, Ellen, Gérald)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4a06aa10db3c4292ac93ed5683b0d820e502f8dfde10356293d110eedfa1fb. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/FRZ110200067.
Delibes: Lakmé, Act 2: "Ah ! ce vieillard encore ! ... C'est un pauvre qui mendie" (Rose, Nilakantha, Lakmé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedbaaa4fb349484c44181a4e355b7e0b134c55019d6d03ec6d86f17aa9dc50f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FRZ110200068.
Delibes: Lakmé, Act 2: "Voyez cette ville en fête !" (Ellen, Rose, Mrs Bentson, Frédéric, Gérald, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1044adf33004b1309d583915461a2fd3b9f0784bdd7e8b59eb04487bcf789437. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/FRZ110200082.