La Caution is a French hip hop duo consisting of Hi-Tekk and Nikkfurie, both of Moroccan descent. They are notable for creating the song "Thé à la Menthe" which is known for appearing (in instrumental
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 0xefae16135817c510b68d7128d7f9ccac4aa5f73050e699640673dcd2a8b39acc. 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/f6e2169d-a1fb-4260-847f-cd7d335bdb0c.json and https://artists.proofprofile.net/proofs/artist/f6e2169d-a1fb-4260-847f-cd7d335bdb0c.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 0x9d743c9d9050cdc862c131fe216db619eb7525f7480cd715e2994e939ca60ded. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/FR6F30610490.
Peines de Maures / Arc-en-ciel pour daltoniens (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c249692bcd5c9196e2733f4e0e2995cc4ff3b9d2bbb29bb97b6713a81ff0306. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR8W90500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a89b5fcf48228c8b7da24feea65892a1e24fe730327f72547a565223a4c0ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR8W90500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b55afb439b00e1237a1986b4e4b5a1f79b7671be7a394842cf05e1e00bf38c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR8W90500037.
Peines de Maures / Arc-en-ciel pour daltoniens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2582064b665739655444eaadfbc693ec2133978484ecb666fa3f819dbba5a8f9. 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/FR8W90500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c9783b5bbdbb38d9a608abfbc64fe31cbc8d9d27bae8c2dfaf8582f5da1372. 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/FR8W90500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc5a492facda05d84355dcde86871961bd70086cb87ea6012fbaf3e9412d3a0. 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/FR8W90500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0e1f7c412dbe29761db7ce5fc02d514b0084966a634abc6a0654180c964594. 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/FR8W90500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72669d303a99cf17daf2522dc37893c524850da7b768ab3f90e52d72692e57dd. 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/FR8W90500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be8afa6308197c89d2add6ddea1f141168f01582bfb3c7955957bd9a81f850f. 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/FR8W90500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a96c26717319c1806305726a3c2a37abcfa4bb57739a94425c8ac9b1eb6826. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FR8W90500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90896825ffe155aa05127ee9ccdabee89d20330966923dd9ac9a93eec437db3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR8W90500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c0ed3a3d03d54570ae5126d0a119aa6a583f241f7519b43de30c71e990eea7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR8W90500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1cdd23a6ce42296938a453afa44871344c273c161ca699f912b8a463afe46c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR8W90500014.
Peines de Maures / Arcenciel pour Daltoniens
Peines de Maures / Arc-en-ciel pour Daltoniens - The Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b70c6e0489720cad1a7a6d9c7683fab2d04d7eb8bf8e5bb7e592d125c446fd9. 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/FR8W90600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09137032741c0fe7b5d6c228653f1212f328d24531d8558dad4440953a3ea7d7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR8W90600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11410f982bb86f3a654fd878d2f7aed5b2cf1392800244cd73b3fa03a91afdc1. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR8W90600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0326151d6bda827bc8bfa55e5383e1ec0e0b6673127444ebefef084bc9d01da1. 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/FR8W90600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425344e3d434f9095e76244f9b0059774ff6d8e26def254d986f71b708b9f3c3. 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/FR8W90600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f6f5c1c04327b1e1a4e8fef406c10e5c59649cff05140618c497c4bcf65207. 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/FR8W90600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c67fef5b24aa547e14ecd547d8c5916c5a296cf7cfe5e59501e3e6a1ca2d98. 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/FR8W90600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecc2c38cf453943acd34045ab23e2e2d0a70b31b7ae59c564b0d7cc71714075. 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/FR8W90600089.
Peines de Maures (Revisité par Radioinactive)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bac5dc07e83e84667dd4abafb98327b80cc9ca6b545fa491c2fc14c29168366. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR8W90600090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21cde836e83d73594661ac56e89d30281dd3a2e1c74e1c3ac696632135eb464. 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/FR8W90600091.
Glamour sur le globe (Revisité par DJ Duke)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe29a34a8aae208ad9a2907431a2fb3d8ed3ceee8fab45a794e51570a7bcc7c1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR8W90600092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89251ffda873bb8f7010c94df4d3d0db2e1a7155c48c54bd549b21752def843. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/FR8W90600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0262ed2eacbdfd945465c99898927782d0badd23e397e5a93eed36d1ae2e5eba. 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/FR8W90600094.
La Caution rend visite aux gens & des gens revisitent La Caution (Live & Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3711782befa8aeac98aee4e6a53be3628e746dba7e1bdef13e85db8e810ef08a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR8W90500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112519b585f3038abcaf9fd7d70b5003bbb13a98555f2bb4e20defc58154c09b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CHA442400461.