Oudaden (in Berber: ⵓⴷⴰⴷⴻⵏ) is a Moroccan musical group that plays Berber amazigh music. The band was formed in 1978 in Ben Sergao, near Agadir, in the Sous region of Morocco. Its lead vocalist and ba
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 0xed848df50be20dbbd09b951dcc6d1acab889181e52fbd238b638c35446cfdddf. 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/2def521e-f991-4caa-a069-6fe35e4b5762.json and https://artists.proofprofile.net/proofs/artist/2def521e-f991-4caa-a069-6fe35e4b5762.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 0x55de552c7c8c6a3407379dcdc849d5a62b709cbea22ef6859b92fec6ce4169cf. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBLFP1517218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46742aa2d214d2d43b1d07b3b2870350482aabde0b5ac193b1fddea12f8d3439. 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/GBLFP1517378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6166887cbb6e3be799fac38e85a7ceeed06c1eba185e04fc3315a438f9fbf4a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FR6V80695734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15ab8438da4f822b72d210019f11f8bac56ef4cbef10e45cbe37b42bfb1116c. 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/FRY391113429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f96744582e8bb25d2eacabf457701756f7eedad6af4900d0d98fa4b2895448. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR6V82004118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ab0291e178e5a843ae7b1236df8561fcdfc7cf4f460d8b26bdf425eedad39c. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/ESA011811764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf892b700818b40c00a890b84f0572a4266b20a70be28ad773739a734c9ae27c9. 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/ESA011811752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d6165ea5dbd5919214c567b40ad64e9dccf98d58cf4c4319b8c47198956481. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ESA011811754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c23073a478806c6f6e116d38d91ec0041c50277b39b7c7a24c1953c333105a. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/FR2X41985296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830d0e3b84d23cbea4e73b5708ba046074b7024b2b33056b40cc74fd9700e770. 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/FR26V2087343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48a99e92b2bd5d33de22ec4d60dbdf4f097640856c0a01427c0999ce3c2e6a1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/EGA262102855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe121f1a50bf7741d1ba6b55a81c8eab03f305192005ea9021725605c4c21480a. 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/FRX282235750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b5f6592870b7f9add91dac2cce2f29d1794a09d0e725301f35c61b4182a4b0. 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/FRX282235754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9818191a5544e3664708826bce751c281992de38d5ef72a489b19bc5e9084b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FRX282235759.