thumb Lucas Debargue (born 23 October 1990) is a French pianist and composer. He was awarded fourth prize at the XV International Tchaikovsky Competition. Early life and education Lucas Debargue
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 0x98ae3e8634ecb865ed7d8ec0437433391ffc0e9dea686d02a674f8f8c39f319a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5c13343-dd1a-406a-829f-d4312619687c.json and https://artists.proofprofile.net/proofs/artist/a5c13343-dd1a-406a-829f-d4312619687c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scarlatti, Chopin, Liszt, Ravel, Grieg & Schubert: Piano Works
Gaspard de la Nuit, M. 55: 2. Le Gibet - Live
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 0xa8d6af1dfdb41a9812ed262d1f61c03de6abbccdf6a44ffc70b34d30d64af303. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USSM11600076.
Gaspard de la Nuit, M. 55: 3. Scarbo - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cab22f7b2e64c700d334a1b2a1149f04ea39c6c9dce7926bdf966c9e11c77c4. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USSM11600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a6faaf465cc58dce077c192ba78196be29925173ede2e7f78a9c3c3206af58. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USSM11604999.
Sonata No. 7 in D Major, Op. 10, No. 3: III. Menuetto - Allegro - Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521b9a9d56301b4fac1332baaac91b222c32ca82597fe19b943794a830c98f45. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:51Z), 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/USSM11605004.
Piano Sonata No. 14 in A Minor, D. 784: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedab0340918c4e4cbba8e8e9a32436f133dd1fd45ecf72b2e428d6fe2787cfcd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSM11706971.
Piano Sonata No. 13 in A Major, D. 664: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c050db245d26aec87c1389d7ee8e769656bac86a95fce70e33747b44159fc84. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USSM11706975.
Lyric Pieces, Book III, Op.47: 3. Melody - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7881deda8146ae86ec51098aaca864d0f3e70b853c0fb8b86978a2d9a3f16e35. 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/USSM11600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ce7c4a69be1a1901f9b8c9831a7da8f1a3871fad16e95aa2e26d6aa5f6043a. 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/USQX92403950.
Nostalgie du pays, extrait des Miniatures polonaises
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994140500b2728bb598e795f1c3eba10a53a90d3880c8bae378af4d220e03d4c. 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/USSM12100444.
Piano Concerto No. 25 in C Major, K. 503: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4313f039d203e7d91d73f822756d898f78c2ee7b7c3c1b4326b2e6fef23aef. 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/USSM12209965.
Piano Concerto No. 25 in C Major, K. 503: Piano Concerto No. 25 in C Major, K. 503/II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde590158d59729edcf99f25706d535bf678603b0b29528a82eb36c564f507572. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12209966.
Piano Concerto No. 25 in C Major, K. 503: III. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bef93b800da19d4a76ee97f8a18ad17ec330fc14bfbcd31aae29814cefb5b43. 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/USSM12209967.
Quatuor pour la fin du Temps: I. Liturgie de cristal
Messiaen: Quatuor pour la fin du temps (Quartet for the End of Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fa2aa57b03b56013c4121138b479d395958a224038b6d4f1460e3f25281ca1. 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/USSM11705912.
Quatuor pour la fin du Temps: II. Vocalise, pour l'Ange qui annonce la fin du Temps
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1e229ae85dc62ae76c361a65fad5680c70ad8a78e6669124dacdc11d8af73a. 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/USSM11705913.
Quatuor pour la fin du Temps: V. Louange à l'éternité de Jésus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1f12c222e63fd6a49075f8e32cc2f7443efa125db6d9010b12f7921da20523. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSM11705916.
Quatuor pour la fin du Temps: VI. Danse de la fureur, pour les sept trompettes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2ec5272d86b19d82de1909d607617333919184efc199cfa795b6b5744666bd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USSM11705917.
Quatuor pour la fin du Temps: VII. Fouillis d'arcs-en-ciel, pour l'Ange qui annonce la fin du Temps
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a5a45a0167d4bec14dda9583e721b96a3d8adf727e7b9466e67f254f1eed61. 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/USSM11705918.
Quatuor pour la fin du Temps: VIII. Louange à l'immortalité de Jésus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36ea623df1f7064f61066ec7238e100986b72a7027f05b00adbf454df7306b2. 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/USSM11705919.
Piano Trio No. 1, Op. 8: II. Andante - Meno mosso - Moderato - Allegro - Prestissimo fantastico - Andante - Poco più mosso - Live from Verbier Festival / 2017
Shostakovich: Piano Trio No. 1, Op. 8 (Live from Verbier Festival / 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa88c0a8eda1099d424c3f84a3eff5731cc5eea4dc0a0b80e37d756e88c2aed9. 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/DEN961702392.
Piano Trio No. 1, Op. 8: I. Andante - Molto più mosso - Andante - Allegro - Più mosso - Adagio - Live from Verbier Festival / 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a49cfb7c46467e90b12f7a4e4ae0ac93ad06ad5aef97c2f98d16a5ed22a242. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEN961702391.
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
Piano Trio No. 1, Op. 8: III. Coda. Allegro - Allegro moderato - Allegro - Live from Verbier Festival / 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca825bac775d7e52310739bdda9e1a9a5d48a0933143fa80b96c31a31bfc2bf. 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/DEN961702393.