Sylvain Cambreling (born 2 July 1948 in Amiens, France) is a French conductor. Biography Trained as a trombone player, Cambreling studied at the Paris Conservatoire. He joined l'Orchestre Symphonique
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 0x82c5cf4d56a79fb18cf670134f628848163a879501f07fa302c80ab403662ad4. 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/a6f177dd-1fff-4cfc-820c-ad71137da711.json and https://artists.proofprofile.net/proofs/artist/a6f177dd-1fff-4cfc-820c-ad71137da711.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Debussy: Images, Danses sacrée et profane & La mer
Danses sacrée et profane, L. 103: I. Danse sacrée
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 0xe469872dd7d503ada15fb1032e1b15cb5470cb05229d0aa7a96c2b6613cd5d29. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA550407093 — a six-check JSON result.
Danses sacrée et profane, L. 103: II. Danse profane
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c933c9e7220eb9d41e6c50a597634baf4eb606e4c6e3d7456252277a52144eb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA550407094 — a six-check JSON result.
Edition Staatskapelle Dresden, Vol. 35: Giuseppe Sinopoli (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d773dc9db139e91bef1d307bde6f11e9c315d98eeb17d242ed2ea7bef7fdc9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60705301 — a six-check JSON result.
Moses und Aron, Act I Scene 1: Act I Scene 1: Einziger, ewiger … und unverstellbarer Gott! (Only, eternal … and unimaginable God!) (Moses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047691a2d140e17028f8f03bed6f8dcecdfd082e8f81ad4d9468fed8e2345e5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA551232053 — a six-check JSON result.
Moses und Aron, Act I Scene 2: Act I Scene 2: Du Sohn meiner Vater … (Son of my fathers … ) (Aaron, Moses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c484174f4876f2fd120508f2867d29b3c258cbbe41b48f95633efc66b440e2c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA551232054 — a six-check JSON result.
Berlioz: Symphonie Fantastique - Concert Overtures
Orff: Catulli Carmina - Stravinsky: Les Noces
Frederic Belli plays works by Berio, Rabe, Martin, Delerue, Rota
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b543dda5be84a935ba4b28490b5b71cc7e6e79e35c3ae7e32e51884bf339b33. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET901118805 — a six-check JSON result.
Trombone Concerto: II. Lento, ben ritmato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e2faafdf168f63210d53868099c4f2cb654341f00dd3dd5f2c8642a39e78ea. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET901118806 — a six-check JSON result.
Trombone Concerto: III. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685b732961575e2ceba9b1a03dcff87c5e13c802e3fae0d454e2aac404b2c6c3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DET901118807 — a six-check JSON result.
Boesmans: Yvonne, Princesse de Bourgogne
Friedrich Cerha: Spiegel - Monumentum - Momente
Bernhard Lang: Die Sterne des Hungers et Al
Rameau / Mozart / Berlioz / Grisey: Paris Compositions
Henze: Symphony No. 7 / Ariosi On Poems by Torquato Tasso
Berlioz: Romeo and Juliet, Op. 17 / Messiaen: L'Ascension
Schumann - Phantasie: II. Triumphbogen (after Schumann: Fantasy in C Major, Op. 17: II. Massig. Durchaus energisch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422d5d8622780572ae9f1d5b22bb18ca1f9dd5f096d2c64353a34168c5fe484e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA550311130 — a six-check JSON result.
Choral Music (French) - Absil, J. / Ravel, M. / Poulenc, F. / Hindemith, P.
Helmut Lachenmann: Das Mädchen mit den Schwefelhölzern
Das Mädchen mit den Schwefelhölzern, Pt. 1: Auf der Strasse: Choralvorspiel "Oh, du fröhliche"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2713da3bd9ca47214e96dd48968fea40ca0eccbd06046a833f7474802a57e2e3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB330285801 — a six-check JSON result.
Johannes Maria Staud: Berenice. Lied vom Verschwinden
Rihm, W.: Quid est Deus / Ungemaltes Bild / Frau/Stimme (Rihm Edition, Vol. 4)
Rihm: Dis-Kontur / Lichtzwang / Sub-Kontur
Les Contes d'Hoffmann, Act II: Les oiseaux dans la charmille (Olympia/Choeurs)
Orchestre Symphonique de l'Opéra National, Bruxelles
Orchestre Symphonique Et Choeurs De L'Opéra National Du Théâtre Royal De La Monnaie (Brüssel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35a391c18dce893f4f2ef86fb1cbba1cdb79a6c4ad4d834bf557f0571bcd510. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8600576 — a six-check JSON result.
Offenbach: Les contes d'Hoffmann, Act 4: Barcarolle. "Belle nuit, ô nuit d'amour" (Nicklausse, Giulietta, Chœur)
Orchestre De L'Opéra National Du Théatre Royal De La Monnaie, Bruxelles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9fd8614e66452e834535dd00f6a4aada56712a0e056091e01b27086d639e76. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8600596 — a six-check JSON result.
Les Contes d'Hoffmann, Act IV: Belle nuit, ô nuit d'amour (Nicklausse, Giulietta, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9fd8614e66452e834535dd00f6a4aada56712a0e056091e01b27086d639e76. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8600596 — a six-check JSON result.
Don Giovanni, ossia Il dissoluto punito, K. 527 / Act II: "Vedrai, carino" - Live At Metropolitan Opera House, New York / 2011
Anna Netrebko - Live at the Metropolitan Opera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b8e25aa4d1e734ba68eb9614695d6b43744dbde86f37084470337cc4c32189. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM71102735 — a six-check JSON result.