Nkululeko Nciza (born 23 August 2001), known professionally as Ciza, is a South African musician. He was born in Benoni, Gauteng, South Africa, and is the eldest son of TK Nciza, a former record label
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 0xd7e950511a711f61f3f5dd4b2a558155f952671c6f9fb8f4a2708a72114f6ed9. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c441ec6f-62f6-4ede-96b6-ba04c144f29f.json and https://artists.proofprofile.net/proofs/artist/c441ec6f-62f6-4ede-96b6-ba04c144f29f.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 0xe4281c9c75f17d54d13aec4021fd12a1ecde29c16c241736540ea78c813d3d99. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ZADB82000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d350a84614be1cecc09de98ddbe4ec932442021ab3930d8c0d135ea08602f4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ZADB82100003.
Carolina (feat. Major League DJz and Abidoza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72ec9c6f4f49d073a96e85850340d582022f349383090feca9889bcfa9d8665. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/ZADB82100002.
Carolina 2.0 (feat. Major League DJz and Abidoza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef591077626d181127cff27080b9f04316308c663c308f1496efc71da554c4f. 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/ZADB82100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54646d7384230bd5260ede58473c502b75fe57b5de311a2374e642ea112f1487. 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/ZADB82100018.
Ola Mama! (feat. Tony Duardo, Seekay & BoiBizza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb05c985880c7471115130e2d98c2d1f15d95620ba3deecb471847473b41885b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USUYG1452238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8529964a4d6f86ae312e462fdc63ae1e7d0c701caa32245cbbefde41de33fd. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USUYG1458344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5909b7e4b449856c8b7662895b65904e73e08448654d72497e5d50dd37ab1506. 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/QMFME2332801.
Isaka II (6am) [with Tems, Omah Lay, Thukuthela, Jazzworx, Lekaa Beats]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94af64f9b171b515a21a156a55655cb127b402b0a1f8957199cf5ae6514f1056. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/RUAH62501517.
Love Me (feat. CIZA, Marcus Harvey and Geeloum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28da236ea7597bf274879225373bb71d42576a7980eb4dd51af17f0f926c3f1d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ZA56E2101678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6462e76226b17da0fc2246c49cf2b43d73afd5044d7b1eb4733d549ffc0fc750. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZA56E2201582.
Superstar (feat. Daliwonga, CIZA and Tony Duardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe05738229cdfbe3803708f9634775b815414f091748fdb1a761a17fc76f0257. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ZA56E2101655.