Laurent Campellone (born January 23, 1972) is a French conductor. Known around the world for his expertise in the French opera of the Romantic era, he is often compared to Michel Plasson. Critics con
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 0xd1dca047c644932c2cd733b910c951e7e1ee17e2d1c024c3a3148f5934e46fd6. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b91365e9-4faa-4b0b-bcd1-3e851e612804.json and https://artists.proofprofile.net/proofs/artist/b91365e9-4faa-4b0b-bcd1-3e851e612804.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Boule de neige, Acte I Scène 2: Couplet de la dompteuse "Je suis du pays vermeil"
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 0x11939dfaea59da4aa0b74a52bde9d228aba153390ffb001f22e8a6129360b1b7. 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/FR50X1843701.
Vert-Vert, Acte II Scènes 7B & C: Air de la Corilla "Les plus beaux vers sont toujours fades"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a58b6246b026fda6b0a87204702e10650b563097b53fcb3a908a85d15a2d0bd. 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/FR50X1843702.
Orphée aux Enfers: Invocation à la mort "La mort m'apparaît souriante"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7d854931b116a3ce5669c21440bbfd6e03d0bd06c9be275f6dd0914437da86. 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/FR50X1843703.
Un mari à la porte: Valse tyrolienne de Rosita "J'entends ma belle"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a491b8e9d2de9adaef65cdf160b5f2dfac78268f13514216dc0b50cc7b2ad43. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/FR50X1843704.
Fantasio: Air d'Elsbeth "Cachons l'ennui de mon âme"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cba17497cf73af5bad5da42a3c80094bff0c12aaf00943e236e0ffbf1b0b9e. 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/FR50X1843705.
Les Bavards, Acte I Scène 3: Air d'Inès "Ce sont détranges personnages"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9030ff8c2a94540f3bba881c3b141937555cb165a6d6d7802ad2a4fc3c1ce350. 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/FR50X1843706.
Mesdames de la halle: Rondo de Ciboulette "Quel bruit et quel tapage"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe7d3035c81068cd57eb57e31e2118030675024ac422559537e11e2c30ffd2d. 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/FR50X1843707.
Le Roi Carotte: Romance des Fleurs "Le voilà c'est bien lui"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f19d9297ada60b7b8201674595d2cb008a9ff5c07dc1bc002b6e31ed8b1971. 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/FR50X1843708.
Fantasio: Romance d'Elsbeth "Voilà toute la ville en fête"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7a7622cb9070378024cb9573b26f48366f20511d5aa9a8a3a5abfff25f5296. 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/FR50X1843710.
Les Contes d'Hoffmann: Couplets de la poupée "Les oiseaux dans la charmille"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9e8282e53de457eee82116f8f32344b73f27b03e6bd38cfea1a540648b18b4. 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/FR50X1843711.
Robinson Crusoë, Acte II, 2ème tableau, Scène 14C: Valse d'Edwige "Conduisez-moi vers celui que j'adore"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790a705177f131aca7fb729b310faa54b0f7eb424b4cf6f8122fef8146aa40bf. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/FR50X1843712.
Boule de Neige, Acte I Scène 3: Romance des souvenirs d'Olga "Souvenance"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95cdd5bf3b7e299aaba60ccf70de61c397681379f1d32264b0c47bea71a3f7d. 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/FR50X1843713.
Boule de Neige, Acte II Scène 14: Chanson d'Olga "Allons, couchez"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb11a112bce4141a455ca221947e5ec84302f93d9faee261583ee61574eb0fe. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FR50X1843714.
Les Contes d'Hoffmann: Prélude & Barcarolle "Belle nuit, Ô nuit d'amour"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c461d0d1b8a770660ae2e8bd50102326966065bd18cf20d1864e6a6d7017e3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR50X1843715.
Le voyage dans la lune, Acte III Scène 21: Ariette de Fantasia "Je suis nerveuse"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8081823af727d570d9d5d868dedcd64659663ce0d06207d5177cdb08dcd082. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR50X1843716.
Ariane, Act I: Arioso et Scène. La fine grâce de sa force