thumb|right|220px|Loïc Lantoine performing live (2011) Loïc Lantoine is a French singer and songwriter born in Armentières, Nord-Pas-de-Calais, France. He wrote songs for Jehan in Les ailes de Jehan a
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 0x48c81122c83af78ee42cbe2339084a70ba5d03baa26a87a373a10224fd00ffd7. 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/8782bfeb-e4e7-441f-8ce2-60ac8d6b1829.json and https://artists.proofprofile.net/proofs/artist/8782bfeb-e4e7-441f-8ce2-60ac8d6b1829.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tous ces mots terribles (Hommage à François Béranger)
Gaston Couté – Jour de lessive (Nos Enchanteur le quotidien de la chanson)
La tribu de Pierre Perret au café du canal
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 0x4ca6b0ba81afc672d69aaa68e6be877c76647506909ad07666e2360640bbc9f7. 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/FRP401700400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd651da331228950597aef07add903fb59a86324d333e2e258a93bff836579b39. 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/FRP401700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e507ef1a6ef1e3f31149e2984da91dab2efa525d121ecb3e0aa0f6b2a7a7fd2. 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/FRP401700420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f5323401aeebd60a3b65628e9ea930971ef0af2a47e4d50a98deccab5894ef. 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/FRP401700430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226e08be8b623608db09d76bc7e0cc3199ce5b4277e464acb1c0d58a2bee9815. 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/FRP401700440.
The Very Big Experimental Toubifri Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3db9f9d0d6841d48158c22bc0c28eaa8efb480ed69bbda19581f8381a6f74b. 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/FRP401700450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8947c79dddd26038da558f40a90d5a510460f2d43d0fa2ee37062bde16f5fcd8. 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/FRP401700460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11958d25abaf884891a78f9aa3e6f8d961707e9916a86e23175352b732b52b39. 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/FRP401700470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5a438538d8e928db85db8a10a6272ccba7b2105744189679d6bd7d4e22fd24. 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/FRP401700480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a8a76cbf393aad1840d60ef1927b39934f957e2bfe5d6b0272226ee8df41bd. 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/FRP401700490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7963eae563dd959da083d78ab6b0d6894eaf590dfea824804d2c28e4d534d826. 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/FRP401700500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a97998615295d7d81ddcfe8845160d3773974b328db7cf859d81899aeecee1. 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/FRP401700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be3bb70c158e0ba3a5c1b20f80dcd071bef445a626c05ea1d3b6a07cc1a06b4. 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/FRP401700520.
Fillette, le bonheur c'est toujours pour demain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53c82fc1484748425831d5f7e0924249afd81f93306770c8b769e8aabd7b85d. 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/FRP401700530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0fabd6771f8fd278c7848b2938514a71fe0d0d152068b564f526aa9a477b8d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRP401700540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51e9bbc9b6096b74f76c60dbe78f0c35b9856205c212bde469b8e31977e6ef0. 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/FRP401500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237f0b79ae93648a7d52e3182f5e9346abe149eb10007e3aa4678eefcb8c0de2. 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/FRP401500200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc03dad7c9d91ac24fc9a4a5d4601ccc44e1d7ae2441dddec86f726a10f78c22. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:08:33Z), 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/FRP401500250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd6b5cfa47a9b381ae3e9edb586e256995665a0b6fa563e4dd2cdbc7f8af7e7. 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/FRP401500480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7355b68793d0a475494cf67106378a9434eb50cba0af46e7795ab213d105e6fd. 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/FR9W11004312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc4f9064ecffe7df35abe638c24f1817eb5ca1c883f0cfbacb86628e736d94d. 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/FR9W11004313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe5a7e16e8e2c10adcd9532846f9573cd60808fd56d7c83f6be16d44b25656c. 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/FR9W11004315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fa0e97aa3596030a4c5b175a369f1024a944bb439b0663af98ad4f747b5beb. 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/FR9W11004317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455a5e845f3ef799902a45dc02914c98669f146332861031c065e8e97836f604. 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/FR23U0600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758c83f62f61a6b71e8664562cf93791298e5b266b74311d5456f6bfc844b5ad. 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/FR23U0900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cf4ca1b80fddbbfd1502dbbf04b3bcc87766fb441ff70b7f96447c56a9a8a4. 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/FR2W12000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c92cc99795f3f85c42373344dbc3f339909b32c9c898ffc13c19aa2af823eb1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRP401700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11597beeb6342a7bab5da2ae43c5371289fabc6ac3324efb4ee3ec383dec34f8. 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/FRP401700180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b561a540947b77551445c40831d42eaa5277eb895a47ff9ddead07fceb6d1. 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/FR9W11215425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07551d7e6f023b56244feea2d5ad3ca7b798beda18936c8607fc0fbc468b8540. 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/FR9W11215430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee39f3b23ed13d9c1f37fe184e1cf52afaca625bca12c420a1bec618ffaae30. 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/FR23U0300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9706b8f5cbf30ae64ee62db82074e75b63ceb444ded3d30fedbc419d7343c9. 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/FR23U0300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6f7446a15f70ebe26d5425a40a76a29cf75848360c2486ddf1d08731033d36. 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/FR23U0300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332b36a740641b0d75bba7bdbe0cea846ea29108971ce17d68a7db8f23d6d0b. 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/FR9W11107578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7062eac028c3b5000435be24ae2662794e6df1868bfd153bb1a95ef4e8d29c0. 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/FR9W11107579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d167d68d9fcf4a960524e61ab4440e53e755475a8d01985ba0b80a9c9c8e88d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FR1KL2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a1921d1ed425a6e538b3eab224f806a1e6c277daea24e72bf9b06aadab63ae. 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/FR9W10802452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac29438aa10cbe2d93ca355bb5a3e08286af0851f7ac7549bc190dd8eeee32a1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR5P50700320.
Les Étrangers Familiers – Un salut à Georges Brassens