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 0x5ecc26deb90d30e0dc7efb738faf611e2f4ef5454365d86c81b7b9ee4c632053. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ad1343a-1351-4709-ac40-0aaa853861e4.json and https://artists.proofprofile.net/proofs/artist/7ad1343a-1351-4709-ac40-0aaa853861e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Robert le Diable, Act I: Sicilienne. Ô fortune ! à ton caprice
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 0x54c4e1d0e0257fe0f97bb0b3249bb87fb2ee6b5d7e15efbcb18151d47b400709. 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/ITJXZ2100508.
Robert le Diable, Act IV: Chœur et Strette. Quelle aventure ! est-ce un prestige ?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a4dda5b8e45456ba830a6ab2f067ab5ead46291e6203aebce2ccb6e07a2572. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITJXZ2100542.
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
Robert le Diable, Act I: Introduction. Versez à tasse pleine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ac863577319f48d15b1241ee54042ab13967437a5ffc3a38c618ebe52bb015. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITJXZ2100502.
Robert le Diable, Act I: Ballade et Récit. Jadis régnait en Normandie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2f532f50fdac1bcddccbee1c800448b05870f45ac6a8de0587af0871a642ba. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITJXZ2100503.
Robert le Diable, Act III: Chœur dansé. Il est à nous.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed9b6665f7361cf685f6ef60f72d827e6b92caf655fbdd2a716f3b3a5312430. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/ITJXZ2100535.
Robert le Diable, Act I: Scène. Le duc de Normandie, à vos plaisirs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfef4d8c66ed2f3f3f2074eea37d7191f090688b3151782db5b52be31858067a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ITJXZ2100507.
Robert le Diable, Act I: Scène du Jeu. Quinze !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab6038c6607a560d67139077355dff6d1278b4b0f26958ba9708b072cea4fc. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITJXZ2100509.
Robert le Diable, Act II: Récit et Air. Que je hais les grandeurs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89665ec7f7948beee09b3d637b9d962747cd4a3dd1e34c245f667ad36555343. 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/ITJXZ2100512.
Robert le Diable, Act II: Récit et Finale. Quand tous nos chevaliers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9088ef5a802da501134e39eec61a9c36943c568c6223eb9370363e2c67e9f238. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITJXZ2100518.
Robert le Diable, Act II: Chœur dansé. Accourez au-devant d’elle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff778ca10217c5152441e433e2c4ed0ac32c56f06cfae9eb687539848b9bcf8. 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/ITJXZ2100516.
Robert le Diable, Act II: Finale. La trompette guerrière
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb26accb88f2df9529f6584f00d93d7aae8b70f6f996c7f3c8efeb1d68802ff. 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/ITJXZ2100519.
Robert le Diable, Act III: Valse infernale. Encore un de gagné !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619fc972de5caaea800e890292f8e54476c307c9802b8b84b5fa4805e8a141b0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITJXZ2100521.
Robert le Diable, Act III: Scène. Ô ciel ! le bruit redouble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd5d73edf278626363c2eca9f5bd67e403e778228bbd8d7755bf19aecdb9098. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITJXZ2100523.
La Périchole, Acte I: Chœur. Du Vice-roi c'est aujourd'hui la fête
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b0aa6e491b63c73c45e1ae0e8ddfd3ea8091ca58a6125a54c3a508781971f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES75S1900102.
La Périchole, Acte I: Chansons des Trois Cousines. Promptes à servir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680c322759a22a9a4180ee76b9e6222d3e4ab0da5eca42ced4f0f34c72a114c6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ES75S1900103.