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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2402317ce503508dcdd3c276e2e6e5212f105ebb08f1829ee5726faac44d68e9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cc1b2e71e95cd3c6829cbfb05d0e562847b60a59fe11d9ee7386a8baae2429. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAAQ11300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd947a1d88360faeb2e4da8d734fb5ae2df17dffc4b2ed0f7b0620abe0a102f46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CAAQ11300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ad0acab46fee10734e03e2bc348dccece5b17dcea4d2a310e1cb222aaf794. 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/CAAQ11300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79c7ae96b24bc18f6e68efb8fd64d6bd3cd65fc97d2ec38393e4dd9d0d685e6. 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/CAAQ11300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e89b84cd80bdd69e439fdf8db3d584b2dc940469071573889aadd4bb8d85b5b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAAQ11300027.
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 0x0065f34898fccec9ee4cb45b65c9b018a4d666586e32ba5cb0579681ff555bf9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAAQ11300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1093e7b213f9fed7c3108abdf4a81d2b24120d287223ea70b970e1d7322055bc. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:05:40Z), 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/CAAQ11600152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852729d7b83b8ab999e715d1a56096fe418e307b66875faea33fc736653499e3. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:54:46Z), 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/CAAQ11600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f3310be95043c23a741656c89028156297460ed4eaaa30a6424fc2accd9661. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/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 0x5fb274e7becaceed858ae32595915ecef707340fb59a89125888a1d5fd9fe3b3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAAQ11700212.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d3c944d0bfbe44016805f20ada3d91615b2a33008cd65011bd2023130ae600. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CAAQ11900283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa22ac84059cd3a476eab8f0dd1d3dd8a31ca58870501e0353cd6df27eaa6c13. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CAAQ11900269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd256a9c22134cf8498c2eea31dd1485f769c2630b2eb2cee69dbeea9b63779. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/CAAQ11900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bec5e6c4697221177779395487e3f32f7e339556249134873b36fa6c05ad200. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:44:20Z), 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/CAAQ11900279.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466e1309251962deeae6f7f3f55afb8076c131fbd88fa6cc2bc67d409bf22e85. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAAQ12100396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00956fb4cdf95db213f87053d9cc9b0991014eb46ec987b7930a049efc1ae26. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CAAQ12100397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c13fc7cea78b65e60ba7c03a326f6cebe89ca65ee94f570dd1d7ba0ac47a25. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAAQ12100398.
Un simple vol d'après-midi (Napkey Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac2dfb695be7caae6f2c109c9f09e3f4afe8a3603e7670423cba820b2d069b2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAAQ12100399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cdac058b1c5f40c29ce6594292a1699ee40073381ee655b2b7c458d6a8059d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAAQ12100400.
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 958798 (2026-07-20T02:24:31Z), 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 958798 (2026-07-20T02:05:33Z), 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/CAAQ12300445.
À la rencontre de Barbara (feat. Standard Emmanuel) [Radio Edit]
Moderne, transgressive et excessive (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e284e20d54a8405a9546be88152f56d6199bee4de7a33cbe9901de585d66c38. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAAQ12200449.