L’Uzine (, , "the factory") is an art and culture space in the industrial zone of Aïn Sebaâ in Casablanca, Morocco. The Touria and Abdelaziz Tazi Foundation founded L'Uzine in 2014. Activities hosted
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 0xb4f1ea21a019cbf92f28fbc886bdf9e8cef87dbf89a2eea467e0bde2b8d4f999. 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/acfb06ab-4e36-4bab-b986-b2b694d87b71.json and https://artists.proofprofile.net/proofs/artist/acfb06ab-4e36-4bab-b986-b2b694d87b71.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfe844c7c896d840da6de10640429dc288db6ac05571bbff8727e8af19f4026. 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/CH6542501144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596771a67411893e58c5497ec9756096fb957f35dc3a19bb67f282e9c46f9ac8. 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/CH6542501159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf783238172cbe508adfeed1bd02eb746cd37edc1016d7b0d293132fc3eb6a7bf. 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/FRX281522717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e360e2751fc8f20b6cef4d2b2547caf43d0b2c09072b987a6f59c72d71047a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CH6542028225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f44bd07d3ec565cd75b4c26315e5b1c479c69e73226126d273cfd40a7148c8d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:52Z), 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/CH6542028224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecb8ae40e0b2beb2e52a1caeb03ba31360d9c85ae00a342ea92773c4f38f583. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CH6542028222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de74761f9805ba2302a9c24afd75ca0b91cbcd0aecf1292ef3565b7503e5f70. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH6542028217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d2cce9e2a36bf424b79ecf62f97a7ff77e89717d5ea9d4bba510cf2eacd513. 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/CH6542028213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c88081cfed5531cddcb71fcc7fc4aa01a93894be5f22df9de3cf11737237bc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH6542028209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f9d6e04f56e69f9538f0cdb649466b848e79b3ee514f6c00ff77524e0d0284. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH6542519952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79e1e6832367ad9ceded87e7009bdf022acf8f3deba7de65a31f53a57ed549b. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CH6542519951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013b4b255ce5f259ffb615a207f99180f531c85c84583f54d67aebb6c863cad1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH6542519954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2408ed277eb8c3679c9674205c8c2d869d771e931dcbf8d280eff26547a682a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH6542519962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8415d9518054a73157cde0f1df1d4b6a1927ac9bf6a56b84dd56d73bf8dc223. 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/CH6542519961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffce81c2ee5a38e9e0c2ccba2099effbb48ccbfc5e7fd6b9b5b861668c9409f1. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZK6Q2446857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef4bac3e591b82d0ad8b1b156f6dc0f69a826833eeb5bd5a3a05e04e36d63f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6Q2446861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37fc89a3346a11760b5acd90e3d7909473700509d3ce503b4ca0db82edc05ac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6Q2446862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d22b45946bee7e93e5adb2512349a6b5355687cbd6083ec4d6382a504ea68. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6Q2446864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08731c557fc69fbb4449f76652ce51c387bdffc7fec05365377713480ccf6f0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6Q2446866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb6acdfc06359f7d7e0cabf67d8ff169f34b76748d85407e6ce161ba3a9dc9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZK6Q2446869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44008313c8c7e462bd652164360050ab6185a1bfdef41b562eed6d88778e3c6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:09:17Z), 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/QZK6Q2446879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43b37c91710b9cb575cec5a8f12b6caf5aee3bd4be86a6ba46539f398687fb7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:16:46Z), 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/CH6542528417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9d8acbede72ace9b7e8b5fc1f63c4d3f007a1bf734e24f30605db36c7facbc. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:28Z), 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/CH6542528421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8866eff767a84f2d9b21e627f1f37aa790e69ad48e229d980926da2ebf8ac581. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6542528419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d363cff0a5d59ad69ac1c2a0deabb79b96458dd2af1019a5c6bf4ce1837fc2f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6542528425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8c68af9f0330fff8c1efd90b7fa4547ac94c5bc2aebc04a46443c992f49237. 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/CH6542528436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dc9c460f3e464666a59147416773dfee0ebb34d6c8a73a9c24270a0e174c01. 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/QZES92355447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c712b9ef7c9a0acd2329f25ffb89b7a0a58f162e31915f631d03c85c653b6b0. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:32:18Z), 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/QZES92355449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f37550003a8efb3e634d5dd3416500dc90a35304b9cd854f31ca4188b177a0. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZES92355452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccb451d67915bed1f6ff45891c8902b75534a783fa65b083f84ddfd5e20cf74. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES92355453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf67beebe00fe0c14b352ca023df1f092f1de9e01b0d3045fb1e770a744b1f90. 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/QZES92355455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499f824ec9b479c3762cc3165c97768ef953bcae49cbc8caf41a573f765e2665. 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/QZES92355456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5630aca872f74db28afda4b6e638f3d8e17473a4efd7014055d3c3cf0480767. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:02:27Z), 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/QZES92355461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68547f34cb4ffed0dff46f00c20a0335f279f22d2572c05318f5e5dd23eaa09a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES92355462.
SOUFFRANCE & TONY TOXIK & CENZA & TONIO LE VAKESO (L'uzine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324dbda2bc4a2aa5a58be720c954344305812e2e4cd79ec3506f3fe728063cd8. 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/FR9W12364258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1509413d53f5edbbcb3bce02c98123940ce3e69a1e32ed13e32b79d06fdf3165. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/CH6541784421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6842da64eca7da1c2e21e3c2e7bbe6442b0ca74e901e8fd8798d3053b4dd70. 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/CH6541784600.