Thomas Leleu (born August 1987) is a French tuba player. He was born in Lille, France. He is the first tuba player to have ever won the award "Revelation Instrumental Soloist of the Year" at the annua
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 0xe9183a00d73c02684edd70f702a39c8cd1723a7bc6d3911b32c9b84eb9cbec17. 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/3d25f577-6170-4e1b-9fab-709847bd5a1f.json and https://artists.proofprofile.net/proofs/artist/3d25f577-6170-4e1b-9fab-709847bd5a1f.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 0xd0ebe0f25c5cb61f1ea47f7d4eac3460743191ddf31ce5b1f68d55f4afa67edb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FR7MS2091001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8660ece3f1ce914dd8f8856222d1b162877c53d8b64dc375e9684e9595a9d3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR7MS2091002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eceb7eeee8b4835db195f1ae8eca8b5e2fcfb547295c5b2aa9df8553affc02e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FR7MS2091003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c04b576f6d064ed2370398be2b4b1473b992b5820def0650913376698f78591. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FR7MS2091004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cc7f998bd2520006bf0310ab4e26dcba8469dcdc94bc57e516e739a5c13875. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FR7MS2091005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dbf4b1d63f845f31e760e48a564708f88269b594e1c42b57aa526e4932025a. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR7MS2091006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b8c2c0ae13111e82cb8c43fb44f4d39c6cc1c1ec214fc41fd0972ef11fd20e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR7MS2091007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b131a25e2a913045ce47febd8593652b2239f4095685473eea549098f17f2b. 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/FR7MS2091008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee6602e33cfcac96418de72826f2c040f1a43806663eaece76d29876317ed01. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR7MS2091009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54fd8147e51b1378af6dffe42fb8dbe2d1a2a3e347f68165fdba74e528c74a2. 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/FR7MS2091011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb733a141fda166c8f243ddce9414219c4e068660fa74a700a98db544d06d1ec5. 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/FR7MS2091012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ebec5fc87c57e87dc6befca1f811743837f37055d4d2558f6ee2771624cbd1. 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/FR7MS2091013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc1cfa85e8234fd086635f7e48ec72ac10348cc86a7fcd8fb247f4ea252a118. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/FR7MS2091014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff4a816d96eaf5e6602f98510f6e4736c363bb4e09b5fc0ea2b5608d9ef2d59. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FR7MS2091016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32118ece23509c9086b5c0576d9c8187a1571a9fa7f7cd8df7460bec61786101. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/FR7MS2091018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aa02802462b2aadb589ea8e231305e30895a3db20aa974364e8c16ec4f1a7a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR9W12459094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d9cb73fc61007f379c4222ebbafd4479e36d650ee0ab7cc0986a1a7d905e8e. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/FR9W12459096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baffe6d909b0ce0189e745e1be60a96d084a7e78aa11f16fa96b9284002d969. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR9W12459097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369162c1e23a91cc845cdb6518be80e0bd3a64521108f75fa4ea10a2da5a6326. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W12459099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a62f11c42f82da7cf5654c7483190535cc72e72a8ba1027a9e7af67e879e6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W12459101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc287ebb35b87d55a8fb0b16cf0a62886c000197c48bf247f8584d47c8498e8e7. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9W12459103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbccb0df33d3b32342de59f2846112319d0883422f583850870cbdbb486358a. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/FR9W12459105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736d4b5b4e6f9da48e13047a7566b4746559aea351fafff42f3adf8b4fe7e0e1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR9W12459108.
Orchestral Suite No. 3 in D Major, BWV 1068: II. Air (Arr. for Trumpet and Tuba by Romain Leleu and Thomas Leleu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9d74daae4d3f9d8b0faa8560dbcdb7d9890bf3d9e1074931f549cf3d0a0bce. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FR3Z52300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deba7cb83895edfa1dbfeca0141c6d54e2aaff528c846011d365887f2eea6c2. 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/FR3Z52300272.
Histoire du Tango: I. Bordel 1900 (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ce021672a654652fd0b87d1b187022341da8608e370dcf78927e8fb5bf0671. 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/FR3Z52300273.
Manhã de Carnaval (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d22675dbddbe6507be74e912e3a96891a5b64d0a169a371426882bd160591a4. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FR3Z52300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe83095ab2c7f358760b1422be4b3cd4d757d0d89f44f8c53859ce68fa6a4b71. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FR3Z52300276.
El cant dels ocells (Arr. for Trumpet and Tuba by Romain Leleu and Thomas Leleu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea5923932b5c209a351273bbb7c9c86d0dd4d94d815c243ce4d64862e011a46. 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/FR3Z52300278.
8 Pieces, Op. 39: No. 1, Gavotte (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82c5cf67b02d3fb9e77fae7565e1376b52f653e63f5ad1499fc0db27cff6fd3. 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/FR3Z52300281.
Interlude No. 4 (Arr. for Trumpet and Tuba by Manuel Doutrelant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda822b3be73e5af70ce1af5bb60c9d842c33796f5395cf5411a9622434679c7. 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/FR3Z52300284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafa3cf097a90cb3663ef3f97844bc83710e7ddd7ddddd4022597c5cb20e49a3. 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/FR3Z52300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d22675dbddbe6507be74e912e3a96891a5b64d0a169a371426882bd160591a4. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/FR3Z52300275.