Michel Lambert (1610 – 29 June 1696) was a French singer, theorbist, and composer. Career Lambert was born at Champigny-sur-Veude, Poitou, France. He received his musical education as an altar boy at
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 0x41be48a75581ddc4910949a18d4f66ca27eecae354523e043e38e4d2233f72f2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d8fc472-dd46-44c3-90b8-a472f4f85f83.json and https://artists.proofprofile.net/proofs/artist/7d8fc472-dd46-44c3-90b8-a472f4f85f83.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c3176e7ca3f716471dc056997df073c21ca6e4a2d58999d4fc1e5e930c236e. 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/FRZ148319140.
Première Leçon du premier jour: Incipit Lamentatio Jeremiæ - Aleph. Quomodo sedet sola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95195d302337336fed8751d51382e21024bfbc8eed8fde1ebd3c4d62e2b0d5f. 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/FR7JM1724010.
Première Leçon du premier jour: Gimel. Migravit Judas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ca03c0227d304ea1a30ed21cb08237220b72d26d9014aa18ff3f288c3ddd35. 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/FR7JM1724030.
Troisième Leçon du premier jour: Jerusalem, Jerusalem, convertere ad Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfd44fabbaa5c81c05e676a3cfd9d3680890eccd32141aab19fde2bf3398b4a. 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/FR7JM1724170.
Première Leçon du premier jour: Beth. Plorans ploravit in nocte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab70ddde29375f39b883e99694c6e87001bcaf586513a88e0df60ec9c6e3b78. 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/FR7JM1724020.
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
Première Leçon du premier jour: Daleth. Viæ Sion lugent eo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f9b83a9d4b91967451d9c8cb22210e7c3cf87c0431a4e452d8ab0fbb27a3e7. 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/FR7JM1724040.
Première Leçon du premier jour: He. Facti sunt hostes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95d58188b60e4709ed97b3f185bdcade72bae3671cd13d9fd4e168c157ed072. 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/FR7JM1724050.
Seconde Leçon du premier jour: Vau. Et egressus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf39ebd0d8548b573c0699b2d723af2a485799cdf4e8aef658ead1d3d46c3ed. 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/FR7JM1724070.
Troisième Leçon du premier jour: Caph. Omnis populus ejus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e79b96cb950317545160ef804ace3fd5c7ee495842e038afe3bc896e1d0669. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FR7JM1724130.
Troisième Leçon du premier jour: Lamed. O vos omnes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66a1a8b35e6748a160df338a9899504bc62549e460c6422bdb5614c7a776625. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR7JM1724140.
Première Leçon du second jour: Caph. Defecerunt præ lacrimis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902892578f3044c6bdb5e4b0dd4bdc863503d644874f2a7a8cd8555c4c557321. 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/FR7JM1724220.
Airs a une, II. III. et IV. parties avec la basse-continue, IML 5: Laisse moi soupirer, importune raison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a403147b68ae2b286e8b2f73bc3f4677535c75c97510517393205880721d0f. 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/FR50X2203506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18c58c3ccaec5f952ffcf0bc590f619f2e6c7b3bcd4840a24e9231153075d45. 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/GBAYC2000514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aa3f2bba16c03af9e40376d74c5d8c7863ad7b9b4ba5af56f2ae21c68be650. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYC2301803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0815ad70ece1bc0ffef8e6c73a5df275bcf3b3345f774ad2fe1a739021219c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC2301802.
Lully: Le Roi Danse - Original Motion Picture Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2cb0eb6f24814b934a950b3b8c0d82dd1c76251cf729f212fa79c59a2836ad. 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/DEF059905040.
Lambert: Ma bergère est tendre et fidèle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe492b2317d792a6523debacc74198e62ec217af0c14e5708ce086cc692d5d042. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBAYC2301795.
Le Concert royal de la Nuit, Seconde Veille, Vénus & les Grâces: "Admirons notre jeune et charmante déesse" (Les trois Grâces) - Air pour les Grâces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd84e402ab264f5472c50e8aba24991c34b5a51cd3bb6f7eac0c9f219b53e2e8. 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/FRZ141504200.