Nass El Ghiwane () are a musical group established in 1969 in Casablanca, Morocco. The group, which originated in avant-garde political theater, has played an influential role in Moroccan chaabi (or s
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 0x20180fff301cfaa49c7accb597c170995f0ddd116d92c3a0aa9e644b67e3bbf1. 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/43ad6a40-7a39-49b7-940a-3dcbecf83c76.json and https://artists.proofprofile.net/proofs/artist/43ad6a40-7a39-49b7-940a-3dcbecf83c76.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Narjak Ana La M'Chite & Echams Ettalfa Dayne
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 0x2f78377a2b5887d513bbdd1afcd0d2d4fc6f91c67c763337ac0d4a518cf3e9f2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:58Z), 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/FR43D2302705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd25e1f125dd7d01e6d88bbb8095feebee85b2e968f0c66b750c6f65830f9007. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR43D1600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53b2ebc75aeabada55338eaf492b407410a89a2d0cb6510c5fa71f88a473b09. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:04Z), 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/FR43D1600359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe257da1a6e3e02647e1bfe7998347a5f2d5f7cbb1b7bd1ebe05d621004867d94. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/FR43D1600360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98785d9eddf8da12334febf37a3bc380086d7cfaecb3f9661b5fe525eba37fcf. 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/FR8GV2261900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d7a5f2552a299f8fb89af505b6e4cdf6125bfa58f2fc102f3c9849b0d21a58. 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/FR43D1706660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fe84ce195692e1d5c5ac6c392136ad5bc06f35419b91a637501078ce2f8f9f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR43D1705190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47faced6237b815d4805c2280b9cb62d8decdffaf2cae6355d97ece782cd659. 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/FR43D1705120.
Le meilleur de Nass El Ghiwane, Maroc Chants d'espoir
L'âge d'or de la chanson populaire Marocaine
Best of Nass El Ghiwane (Double album remasterisé)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd524d9f83539ae0473556bd4b724b96a7698415c9cce8ff34275f55ea4bd19. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR43D8400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fa4a50f27d76970210dea0829b9a809b6f4c6a5c54f0c46f172c800b322beb. 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/FR43D8400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc907843a7adc6db54cee0f04f625f4161bbd310e7c51229aa312f432322d0824. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR43D7400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc49514f480d2fc6ac6dd0eac13c791c5c29334cda145753cf1b6c9ad9d2145. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR43D7400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d0c5cac3368c9ca04f8aca76f8f8edd811644e3fe696bbf783667ea7d42140. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FR6V80667503.
Concert au Théâtre National de Rabat (Live)
Perles rares, vol. 2 (Enregistrements historiques)
Mahamouna - Ghier Irrjal - First Pressing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1658af63770d1cf3683da37c2ad26e087b94a575223400e16d2f728af0c2b061. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:04:47Z), 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/MAA051001767.
Perles rares, vol. 1 (Enregistrements historiques)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cc333f94b7240242caa0be5e4e874e114ef507d8f1fdff986d71b4d2c52c72. 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/FR6V81592420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c379ada6cec61a086f4e13f691097b21c217657a908fec9833ffb9930250dc9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V81592421.
Ghir khoudouni - Emparez-vous de mon être !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ea7f010e33db0b40cf3f4dadcca02c66bc7a283c06071e2db9758b7c6cc290. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:20Z), 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/FR6V81592425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e52e438ee11c348e2ab4e2319e5451bdd30135357565198915f286517db2f3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FR6V81592427.
Mezzine madihak - Grandiose est le chant de tes louanges !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d18becef05975a4ac663e6b7c569e7dfac71debfee9fbed7584e480a789b7be. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:28:25Z), 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/FR6V81592428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e01ea9d4770948a7a8adf3771f4c8c23ee76f79d875aa67a4b4e26776236fde. 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/FR6V81592429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd59aefffdf4c318eb2a59f6b1071745c314615b3a0c2a5de6095788bdfa6d52. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR6V81611462.
L'âge d'or de la chanson populaire marocaine
Le meilleur de Nas El Ghiwane, Maroc: Chants d'espoir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf74a6b6d1af882c681c0f13f943069b6d41888a47b24cf26e2587cdfff9a54. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR43D8400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3718ea00ec82f6f5641704327d6b552853e41e82c9efa206cfe5040c57b38d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR43D1504484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70f8798ea0e3c08f57f6d09a873c9888df4c41a3b256ece09613a6811f447e3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:18Z), 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/FR43D1715400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf19a9f260d97100eb4d7e72d4f763122b918c894293b2125cecd75949a94ea. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR2X41967942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60aa4313759e66c35acc01d0423188527c2b2fb97a51136b2af04234e8b3271f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR2X41967950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b5579bcb492f4f649d82949ecdfa74daf5252972bacf7880f8216e1d15d4a8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR43D1715000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf768cf3c2f124dc7ba797bb980afdf43ffa007fd2098150b9f0aa6949d0f692d. 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/FR43D1718630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc375bd1b4a15026766d8241a9ac206459899c51fdc643b6428a2b7e5956c920. 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/FR43D1718640.