Jubantouja or Juba n Touja (Tamazight: ⵊⵓⴱⴰ ⵏ ⵜⵓⵊⴰ), meaning "Juba from the hill", is a Moroccan alternative rock band that performs primarily in the Tamazight (Berber) language. Formed in 2016 in the
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 0x4fde1b91aea8e42a6ab7bfeb908b989261df542a382ac6bcad4abad0cbe20d9a. 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/f397e5b7-4a63-4ad3-b546-1030a7bd3a1f.json and https://artists.proofprofile.net/proofs/artist/f397e5b7-4a63-4ad3-b546-1030a7bd3a1f.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 0x9e1a3e618bb224b6ae1ce314e1a009dd4d734ccd9628d527c812d70bafb3a0fe. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/MAA1S1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceea593612f56fe7b1899e313d68d51af6970521f6ec750ec6740bfdcc05d75e. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/MAA1S1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff3837e143daea2190c779ce16a4c0da24cc1e3397f6cd5904749d22211c52f. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/MAA1S1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c436504f211ade7640ccb1c7816fa53de0b5590a015d4a9d64c6fc2c206f750. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/MAA1S1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175fdd7f129038cb292ac5ad89d1576ad9babe8c4b4cca0ed948d0f2ff36c4ba. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/MAA1S1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdf77bc39611faeb8d5d65309721f4134e2a15d09636e17eb0fc3c7fe97a345. 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/MAA1S1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f153b6f586b83a92e7de99e142c6f8a6f1f2eba8afb381d0c84162cd63dfc5d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/MAA1S1900008.
Assif Azugagh (Live acoustic session at StudioHiba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c88fdaf83d36bd4d80c5f52427fe833ea2bf41a1e80fabb3d5423fb0a6d30bb. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/MAA1S2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd817937ad790465e59e38fa86823116f35976999c346a374c87ff49e68fd65c7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTBE2317073.