Sylvain Chauveau (; born 1971) is an instrumental music and electronic music artist and composer from Bayonne, France. He is committed to the reduction of the ecological impact of the music field. Ba
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 0x5c07ccc5aec551669a9d577a84fd7a2b8a74b9429bd94011a04a296530435fb9. 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/8503e409-6df5-4084-979c-dce8fa32084c.json and https://artists.proofprofile.net/proofs/artist/8503e409-6df5-4084-979c-dce8fa32084c.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 0x2f9e9710ddd285e9e190ec3026734b138dc478495beab7edb711bea00fbeeb73. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/FR6V80401217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9faa7d97ae874d21e781bccdd0068ec582e76eb4c595e409d188a8da214715f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/FR6V80401221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f614984f6e677b3dd359f1253297385b15e69c7c44776e61162ad53842aa4c. 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/FR6V80401228.
Down to the Bone (An Acoustic Tribute to Depeche Mode)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46804a0365461b807f83a1d8514878c3bcf869e5a391ce447b9dc17844aa41ba. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCACD1501876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ece1ec2f7d7c5df53d7ccd2e632ee3da93f777b715d6299898991d1a7bdaf19. 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/TCACD1501884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d84302828367b04bf3c931099be6a1b91ab9de1f530d0ebeb44350cb4313f2e. 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/QM4DW1899622.
Simple (Rare and Unreleased Pieces 1998-2010)
Simple (Rare and Unreleased Pieces from 1998-2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6542f9f97fd6663544a080af944edbd15dd327c437013ae481b909d992b0a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBDCA1202219.
Echoes of Harmony - Early Music reworked
Life Without Machines (feat. Melaine Dalibert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302600c01022ae630a368cce1df62e7a94196a09e937e153b4642f84d1d81725. 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/JPV231800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b09154913e6f266fefe178b78cd9ed8f24e9179d1cdb8ab42a9676df6b371ba. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/DEX262483512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd517b8dc3c060afe9b71500ae46e0810cee65d7efc6210e8650fbf61c35a2e5. 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/QMBZ92416679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd517b8dc3c060afe9b71500ae46e0810cee65d7efc6210e8650fbf61c35a2e5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMBZ92416679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9eab1c3631ef0be2ed0dd18516f3a3757746fbd172c8cccc5d0e0b6f328cf5. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QMBZ92416681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86804cd92c91861b0d47a8e78738a8cd43a08ab9bd42dc61e636e30611839074. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBJSN0703412.
Le café abstrait by Raphaël Marionneau, Vol. 12 (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed5bb5acebb66500b8f99e7f7e9e9ec531c814e2aabc60abe8da6c86c15998e. 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/FR24Q0555010.