Le Couleur is a French-Canadian electro-pop band from Montreal, Quebec, which currently consists of Laurence Giroux-Do, Patrick Gosselin, and Steeven Chouinard. In 2010, the band released their debut
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 0x2402317ce503508dcdd3c276e2e6e5212f105ebb08f1829ee5726faac44d68e9. 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/84c8c4af-f36c-4e39-bcef-261855c805b6.json and https://artists.proofprofile.net/proofs/artist/84c8c4af-f36c-4e39-bcef-261855c805b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vacances de 87 (feat. French Horn Rebellion)
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 0x81cc1b2e71e95cd3c6829cbfb05d0e562847b60a59fe11d9ee7386a8baae2429. 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/CAAQ11300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd947a1d88360faeb2e4da8d734fb5ae2df17dffc4b2ed0f7b0620abe0a102f46. 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/CAAQ11300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ad0acab46fee10734e03e2bc348dccece5b17dcea4d2a310e1cb222aaf794. 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/CAAQ11300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79c7ae96b24bc18f6e68efb8fd64d6bd3cd65fc97d2ec38393e4dd9d0d685e6. 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/CAAQ11300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6414c6269c755be5aa7d5057ac56620bcf297870f01f7ca78d9200e26126a74d. 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/CAAQ11300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1093e7b213f9fed7c3108abdf4a81d2b24120d287223ea70b970e1d7322055bc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CAAQ11600152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1d6d47fcbfb4bc64a1a24c968b3ba9938dd1387526a9548de88c449d1eb041. 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/CAAQ11600153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852729d7b83b8ab999e715d1a56096fe418e307b66875faea33fc736653499e3. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/CAAQ11600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f3310be95043c23a741656c89028156297460ed4eaaa30a6424fc2accd9661. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAAQ11600156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67ef6998528185b9760154bbcf058c66dc3e6c18399b4713e986b5a7db36610. 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/CAAQ11600151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488c65857c3d69634fa47102a760118b7f3592961d4bde34b26d3b908c0b1693. 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/CAAQ12000304.
Un simple vol d'après-midi (with Valence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ee8ea6860cee6feb092a95b2e0ce006c5b230634a072daac31fc88fd051960. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:36:37Z), 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/CAAQ11900285.
À la rencontre de Barbara (feat. Standard Emmanuel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d0691b96ddfe864c372fa3421ff7fa8c997e7f2b16cd0b91ce3e118ca04139. 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/CAAQ12300488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a3209cfdb54cc41dc6f219b2338e1da3c0b800f29a61d501e0cffbc832e98. 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/CAAQ12300496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfe5032a785c7f63ba32884a1e33fcb06810b5c9da97be9fe9553adcef1f2f6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/CAAQ12300495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7454849a0e808ea5139478a023afba037f66c30fae0bbae9bfc02f1db2949f2d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/CAAQ12300445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc6e181f55a7f1ebb64abe41637486d90e66589fa1b73c7d58e92bd0ee3ff8. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:35:17Z), 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/CAAQ12300500.
À la rencontre de Barbara (feat. Standard Emmanuel) [Radio Edit]
Moderne, transgressive et excessive (Radio Edit)