Juma Mussa Mkambala (born 1 September 1989), known professionally by his stage name Jux, is a Tanzanian singer and songwriter. His music is a blend of RnB, Bongo Flava, and Afrobeats. His songs includ
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 0xe8f5ff40364e560976b4eaafa5b81ee9f9ee8784a93d28021bbfabb07429f7c1. 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/5a65a44f-e213-4ca5-90a3-401b85456eae.json and https://artists.proofprofile.net/proofs/artist/5a65a44f-e213-4ca5-90a3-401b85456eae.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 0x1631cf906ae5223f4f54717a6ca3447b17a4361c59c95edb97756e92b64d1c58. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZA56E2302209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c5f9ae50fb1f55767e6a90b0997e879a63de4d391b4bc89df322a450f00d08. 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/ZA56E2100968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb174c2884af58f13116884a3df5bf96505dfa677ee3240663b4c9d510866e518. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TZA1X2300815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e29cf0cbadae56d29c4bc18fe521f5a599484bae9c5ab3d1b00cc32c7dceae9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ZA56E2201560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa045afbf6dadac5d51a1c4a19692c0ae339a2973cc9c5b261958c5ab8e20b698. 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/ZA56E2527857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88d583dac66cb44c3cc423361ce9ae33f63be2a684b45bcdac8afc2659a2332. 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/ZA56E2201291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bc33e24af14443e687b804f1cfa63cbeb07b82fa733f107d5ba7a2b69a93ef. 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/ZA56E2201292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29df22a348eaf81e8803ab21d7a004c8971ae5d05b391824fb9ef3ee51ae837. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZA56E2201293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaf4938a3876ae09ab74c87d2bc5544a64480abaf1dd66d357ea8534fb5bd85. 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/ZA56E2102372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79f14b662b6843db631c879d14eddb9dde620f29a6adc579df392c0a8a29d7. 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/ZA56E2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279ef3f4812800e8d311f6ba1768719a64c0039c1d137992112761b4dbd92726. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZA56E2200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dad4eb2b0d8888321fac6aa73955c48130484c988996901d1d9ffde21e62d1. 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/ZA56E2201295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8463292b913eb7f240ec70d5f2779c6a8822d65a5adfcbf0238ec19678b4d4e. 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/ZA56E2201296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2a88ee8120dc60ce6e9ef2054272ece1c1141e638ee9aa11b87db0673e3b74. 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/ZA56E2201297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7566eede2fab5c80f36d08bca5220587bb605f42892afa392390d207d3a5689d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:33:37Z), 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/ZA56E2201294.
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 0xc949eb9e6af1dcec66453ff841a718519902f9612a5b45ca2987f3881f093977. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TZA1X2000806.