Gaspard Le Roux () was a French harpsichordist active in Paris at the beginning of the 18th century. Little is known of his life, which is exacerbated by the commonality of his name among musicians an
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 0x73438468dd8d728cb429d555655df9c46d0547cf265e003f2030abda5007eeee. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c25402c-27b7-4f5a-9a90-1aa5ef7ab6cf.json and https://artists.proofprofile.net/proofs/artist/3c25402c-27b7-4f5a-9a90-1aa5ef7ab6cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"Conversation" Gaspard Le Roux: Suites for 2 Harpsichords
Suite for 2 Harpsichords No. 1 in D Minor: I. Prélude
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 0xbd7b004f8fa5beea6fc1b25d2edf8951930bb7aac192cd6023f4d2ce530b499a. 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/FR7JM2372010.
Suite for 2 Harpsichords No. 1 in D Minor: III. Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd52def55279720e61092f4993450a7bea3021443d45f2641e5eae7c1cc3fd8e. 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/FR7JM2372030.
Suite for 2 Harpsichords No. 1 in D Minor: V. Menuet
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Le Bourgeois gentilhomme, LWV 43, Act IV Scene 5: Marche pour la cérémonie des Turcs (Arr. for 2 Harpsichords by William Christie & Justin Taylor)
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Suite for 2 Harpsichords No. 2 in D Major: I. Allemande grave "La Lorenzany"
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Suite for 2 Harpsichords No. 3 in A Minor: VII. Menuet I - Double - Menuet II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e596529ce0abfa1e574daf3ed2a799e8e1e76d0fc11caa0dc68a5cae8273897. 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/FR7JM2372200.
Pièces de viole, Book 2, Suite No. 3 in D Major: XXII. Les Voix humaines (Arr. for 2 Harpsichords by William Christie & Justin Taylor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eec4c0372e4a78dc0ee0d639fdd5ee3cb9446ab1529c03061a46acea203b09e. 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/FR7JM2372250.
Suite for 2 Harpsichords No. 5 in F Major: VI. Passepied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e71446815784d6780ff11f8c6603415a58e7da0f378ab2838f634baa434f6d. 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/FR7JM2372320.
Suite for 2 Harpsichords No. 1 in D Minor: II. Allemande "La Vauvert"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7fa8b994abcdd8a94befb27166e5cab790bcbe68bf3dc2dfef7835a84d7f44. 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/FR7JM2372020.
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
Suite for 2 Harpsichords No. 1 in D Minor: VI. Passepied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80a9460acdfd7c71449e47cf5bbbb660f598a89619d3b5ff528c3ebdf7894cc. 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/FR7JM2372060.
Gaspard le Roux: Complete Harpsichord Music
Pièces de clavessin, Suite in A Minor: II. Allemande "L'incomparable"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24e75fcf75b0e3bbeeb29afeea604df1c62a07d63a4e2ab64d8780f105b8ae5. 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/NLY331600780.
Pièces de clavessin, Suite in A Minor: VIII. Second menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3769c24efe156760291aa7888c1fdabe9c27754dc67ac5b3c84251871f405f. 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/NLY331600786.
Pièces de clavessin, Suite in F-Sharp Minor: I. Allemande gaye
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dab4665c46f8a35633fbee352fb70068cf26074e4a718400c79281aadead7ab. 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/NLY331600795.
Pièces de clavessin, Suite in D Minor: I. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09701ef15a098e92ad839be44c187d5403d00fb47000d68fc3f8347cc8a7fdfb. 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/NLY331600768.
Pièces de clavessin, Suite in D Minor: VI. Passepied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b168e827337a36cabbe8b5012ecb1ac8714d1e81e997884aacd77d53bb2f024. 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/NLY331600773.
Pièces de clavessin, Suite in D Minor: XI. Gavotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4133b9591a30559dc88087944f8f577717f94d6bdf2276fb1ce0e234ceb2a8. 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/NLY331600778.
Pièces de clavessin, Suite in A Minor: VI. Gavotte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6109c6a33871241b3a04c7d8fd6e7a65c11a49008d6422f3d9e00e326d488f62. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331600784.
Pièces de clavessin, Suite in A Minor: VII. Menuet & Double du menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bfcb91e50c5f6fe927c249279d60f093e9ecf79379acd61eff33243b7c926e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331600785.
Le Roux: Complete Works for 1 and 2 Harpsichords
Le Roux: Concerts pour deux dessus et basse
Gaspard Le Roux: Gigue for 2 Harpsichords in G Major