The Orchestre National Bordeaux Aquitaine (ONBA) is a French symphony orchestra based in Bordeaux. Its principal concert venue is the Palais des sports. In addition to its regular symphony concerts, t
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef05afb62638017603d7469c354d3fb8cd02ce113a1ea9e3fc2be36abdce3c1. 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/b47624d8-2236-40f8-a1e8-575dcce7b99d.json and https://artists.proofprofile.net/proofs/artist/b47624d8-2236-40f8-a1e8-575dcce7b99d.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29414f9b333dead5ae90ef6c2c973492f93908649a015e1ae613e6036da09189. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITJXZ2100501.
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 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 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 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 I: Récit. Ô mon prince ! Ô mon maître !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8565118c06c67db44e442ecd0f60ceb9b917228eafb16ac3391ee45c0fec0b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITJXZ2100504.
Robert le Diable, Act III: Entracte, Récit et Duo. Du rendez-vous voici l’heureux instant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db264d9049e627ee8313a8d8c6d172ffeeebf0b0e3c7918239fb7ce9c54d929. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITJXZ2100520.
Robert le Diable, Act IV: Duo. Grand Dieu ! toi qui vois mes alarmes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a8056d79ae40453c507960381de00fd7a13c720df79aeb4aef5888cb91b167. 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/ITJXZ2100539.
Robert le Diable, Act I: Romance. Va, dit-elle, va, mon enfant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d903a33a3cd38a4b96d83337129392cbbb80f9da4e44a352481e2eb2fcd7f9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITJXZ2100505.
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 IV: Cavatine. Robert, toi que j’aime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da74015e72e1d929933a6e3f3266985ca4f071bc221eed9351431ea30ed17bd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITJXZ2100540.
Robert le Diable, Act III: Récit. Raimbaut ! Raimbaut ! dans ce lieu solitaire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb17d02ad3f345c7e5bad77cc0785c2e0e4a05ffe345cd52589c03a3397e6b0. 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/ITJXZ2100522.
Robert le Diable, Act IV: Duo. Mon cœur s’émeut à cette voix touchante.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41da7de156e103e3a30e7c46f4c25292ff25c6b353c37b8ef7fcc18b4cccb1d. 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/ITJXZ2100541.
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 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.
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.
Robert le Diable, Act I: Sicilienne. Ô fortune ! à ton caprice
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 III: Duo. Mais Alice, qu’as-tu donc ?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ddfafc3c3c13e8b60a78193fef71565b4319ea00d174624843f7503f222a3. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ITJXZ2100524.
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: Entracte et Récit. Où me cacher, quelle horreur !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893fba4f960ec2d457afca6e8aa7b402126caeb1f0bea4ccf322985718b39f79. 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/ITJXZ2100510.
Robert le Diable, Act II: Prière et Marche. Oh ! ma mère, ombre si tendre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff308d6972c6f1e99c4dab73895e4910e22b322d12aaf744561a2f3ecd778b68. 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/ITJXZ2100511.
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 V: Trio. Que faut-il faire ?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7255b627c74fe0b157ceca48ee1b29f9759ed84bbf2d8905bdfab0d24f04c3c. 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/ITJXZ2100548.
Robert le Diable, Act II: Duo. Avec bonté voyez ma peine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679b5c81454eb74e4b8deeeed4295e09735404ed90508fc5d8487004e6db65e0. 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/ITJXZ2100514.
Robert le Diable, Act II: Récit. À toi, Robert de Normandie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f94383e2daf0a96c8640aa2fe539900bd79f8dac7fda679095adb132ac8a92. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITJXZ2100515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00bc62e3dbf668001aad9e06079318dd8603c9fc48360e58c4fb94f4c84ed37. 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/ITJXZ2100531.
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 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.
Ludwig van Beethoven, Symphony No. 4 In B Flat, Op. 60
Johannes Brahms, Symphony No. 2 In D, Op. 73
Johannes Brahms, Double Concerto For Violin And Violoncello In A Minor, Op. 102