Christophe Chassol (born 1976) is a French composer, pianist, arranger and musical director. He is known for developing ultrascore, an approach that combines recorded voices and environmental sound wi
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 0xfa23b119ab47c2365f161bac807df54e7c77ea6fee6cce56c088d242008241d9. 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/775dd955-f1a2-4c2c-a688-9701ebecae97.json and https://artists.proofprofile.net/proofs/artist/775dd955-f1a2-4c2c-a688-9701ebecae97.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 0x40ef4c6d91fb3aa40acbe976c32ed55d4ac42b5cc5f8639f328a75b182e31925. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR90Q1100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f595a5278597084b56ec7fd2781aa656bffcdf69dee62c3803c75e571f5a38. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FR90Q1300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e03a608e94399316422920f049824b36ebe120cc4f3887f1973a0a9230001f0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR90Q1300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bac57da679ce26c8af2bba9f0a552ee4aee970e5b6111edbbceb31743542cf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR90Q1300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7a8a09078d061958aa488e1973c84f6b7fe49b24a44a718db2f06fa86ef158. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/FR90Q1300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f907dea70c38dc67e4eae308036d40595c672f5289195ad9583eaa38e65d3a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FR90Q1300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ea5a047d3c66db28f430c643cda8f6503ed87396b17cf558f45fec2a83280f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR90Q1300119.
Indiamore (avec commentaires exclusifs de Chassol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794a964804d31d4a0482b3e5478ba08da77a1b078f54572b02ceb01cbe8bb03c. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/FR90Q1350020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a6da176e7df32d2f39baec00cde8f432f92572f6340290110105280556b017. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR90Q1350030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97e1188452b65fc7e8f2311870686ce56fab5d327d99f1254564bd0a8bb7d71. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR90Q1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aefe103758ab1e6f30175b2f1d1a728e3bac4d9197e7b9c6ac82b3b47b2ceb. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/FR90Q1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6be9e8b010fa0dc0bb5ed4751b1c0513b7062970f895fd6088d73bbdfbebd1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR90Q1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b667426a2b6aff1e38f7730e1bc9e3979e2cefb0ea05723e186f9c056edba21. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR90Q1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9d5b586947cb6981d3255626030fcea9c90a01e321254f63af289cefb2db85. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR90Q1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0173f2a731de1184488d886187611a15a0837f1a4636ae1d812df65d882585. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FR90Q1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244be72288473eced66b114850d46b80e2560de183071de106b506e9ebdf9485. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR90Q1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606b2aec35d1cc3b3cb9439bf16f79fc8db4fa29caaae0304e3a7b60edabf34. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR90Q1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340e53aba3c0d15b7232ea99e589a96b530f1c3c9f075e9460ebc011ba65fe16. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/FR90Q1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a43cc3aea9e0599fee2870c127e095ee694f70a4584b2d0997fffd30aa6a7da. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR90Q1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacee734826a79d0d7868d4438b03daf323f65ae4d8a1938b8712181dab968a6c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR90Q1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507bd2aa043e519ae23322ab735252cc893ba1e388f203f705f0f2dca573003f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FR90Q1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9cf699528bd7131b4cdee12289de707b861e5d69713f9fb43a42b960f3f40a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FR90Q1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bfc2bc0c969e27ef6afb7da62109a93f36414a92408d5b592c3bcc257ff9ec. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/FR90Q1500020.
Carnaval, Pt. III (Percussions harmoniques)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebaace3e59db77e3ceca27f49dcca040528270111eb8252493d5f4dea7d7ded. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR90Q1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d2ecd018083cd181df75bec96cee5893b70457d62f52dadd909d851e43affb. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/FR90Q1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469d9b5cc5ea4ee83e187e43d69378d0da5bec5720549e940842deedbeecf214. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/FR90Q1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2153ac2750e7016bdcc69676b22703bfaf29d90781c86e593dda7ababec51c46. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR90Q1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739d78335945fed6c7cf9a55dcd37bc0f8a79f69af2961fed9635def548a316b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR90Q1500027.
Touche française (Bande originale de la série)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3677a5f2abb56e62484e4215761c7ba78182f6d69154c52e379c0bbd577c5964. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FR90Q1900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c44702d77d33bb6d1fa11ac3b1797ea351b4275da7873c677cd4d2b486e1b4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FR90Q1900421.
Music is God My Love (Ménage à trois Love Edit)
Music Is God My Love (Ménage à trois Love Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adecbaaa79921d2c91fb5b7a0af5f2679382ab0d51714055248276503e82e6f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR90Q2100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda51ad096553dd8aee0bd86f486801e1dacc2092c12665642598876e9defc6d6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZ8BZ2304342.
Chassol Plays Basquiat (Live at la Philharmonie de Paris)
Jazzy Chill: Sweet Jazzy Infused Tunes to Chill Out
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7470367b98ba9fe11b4db173159f43f90fca830c3485312c109858764eb79db. 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/FR99S2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a0566fcbd9a89f1bfc0c9f537f843a33e3325c87cae3cf6a94eaddfe6525ea. 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/USUG12305182.
Gilles Peterson Presents : Melanie De Biasio – No Deal Remixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe337630f9059a8bc7177472fcbe90c5d4e3dfa5d7a5c16902ffce40e089c6411. 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/FRX851400452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d9a825b2b88cb6e9ea6a2a91dae52b45378e5db9dcd1123ae7474476bf9126. 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/FR90Q1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7842c4656df8309c9f20337e11e8e87aad746a8a6dabf4815756b9ac9d171746. 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/GBMVH2400900.