Florent Héau (born 1968) is a French classical clarinetist. In addition to his concert work and recordings, he gives courses, mainly at the . Biography Héau studied clarinet at the Conservatoire de
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 0x6da50dcc742e994fa6075bb8c212cee7ad1daed0f50d2bb4ca118572038e7417. 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/f52527ce-1685-4fc4-acca-267ef770ef52.json and https://artists.proofprofile.net/proofs/artist/f52527ce-1685-4fc4-acca-267ef770ef52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Quintette avec clarinette K 581 & Quatuors K 380 & K 378
Quintet for Clarinet, 2 Violins, Viola and Cello in A Major, K581: I. Allegro
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 0xe5af8fab79a410fbc3c07a5a8bf1d19f915fea4c93d5348926a43b45d5c27ccf. 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/FR1P70701950.
Quintet for Clarinet, 2 Violins, Viola and Cello in A Major, K581: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b019b1e89edb9e25fc85d484d9e9938b13aa4ef404ded6314004ad7744e59e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR1P70701960.
Concerto for clarinet in A major, K.622: Allegro
Mozart : Symphonie Concertante K.297b pour hautbois, clarinette, basson, cor & orchestre - Concerto pour clarinette & orchestre K.622 - Sinfonia Concertante K. 297b for oboe, clarinet, bassoo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9535bc31078a82de6aa11f8674bf8d9b28aec85c811b2ddce77714563c1eb194. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR92Z0700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a6ad11e99eb157138aceb1aff697557c9ce91a1eeb256302d2be2dce67bf4d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR92Z1000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482008fc0c250c3ddac5d82a3afa145ad46263b7473322a8b2a9cb7f92b08c55. 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/FR92Z1000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15574ae1d8e4d369457a9952e8926fce8d5ce1983637edaf09adac0fe7631b8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR92Z1000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053e09cb85aeb070c7a7fea0bdaf43abfc94319beb72326e75546b17bb2e2895. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR92Z1000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb7febc0cc1b78f8cfe74274737e2f980910ebbdaafd1be4fd7c770ebc4a04e. 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/FR92Z1000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658b861cbe31f6a4287ea2744f5878e89aaa5fb4222c7faf65028f3a0dc25085. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR92Z1000039.
El Sampedrino (Doce Canciones Populares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683553f423de5850d2b281ca6f77a7859e45ff84d76fade14fe751a7ac8bdb1b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR92Z1000041.
Sinfonia Concertante for oboe, clarinet, horn and bassoon in E flat major, K.297b: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b3bfe74289a81ee09a15c915700e6a384cdf63170b22abed3b220f6c37d905. 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/FR92Z0700047.
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
Sinfonia Concertante for oboe, clarinet, horn and bassoon in E flat major, K.297b: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c0db19a503510585611c36df29638e81f97a09537e654944d25a74cb1cd138. 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/FR92Z0700048.
Sinfonia Concertante for oboe, clarinet, horn and bassoon in E flat major, K.297b: Andantino con variazioni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a676ada1ae6a7c3d1a5feadee61c1eb76b87e1ea5e3f9b05965b66f90a55313. 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/FR92Z0700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79363a2284f6d534f9cf65ce3d3c16a045c3005cf41a51a6f1c732de436d30bd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR92Z1000031.
Abismo de Sed (Doce Canciones Populares)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5058a15ad63356e27f41d9fdde384d1db46ca8727f8a8fd70151c060707a59. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FR92Z1000040.