Hugh Okechukwu Ozumba (born May 12, 1989), known professionally as Mazbou Q, and formerly Unchained XL, is UK-born, Auckland-based Nigerian New Zealand rapper, singer, producer, and social media conte
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 0xf56aff96cc6c6f815e2ed6e46fca169cb7f301cbb55b2bfb333b9c7af6b8f18b. 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/531f5237-c9e1-409d-b840-d4fe31f1f3a2.json and https://artists.proofprofile.net/proofs/artist/531f5237-c9e1-409d-b840-d4fe31f1f3a2.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 0x1be52fed305d1b0f2412fd0a53494e0863ddff06e5adefcdb539c599d21ce2ae. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/NZPB12203564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d2e1d1e5109856b798478b09b918e056516265433e4d6b32a3d9681b092316. 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/NZPB12303657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddde5df8504e5ca592145d90fe8df3c30bdb4d3f27c9ae6406aaa37d1fe513f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NZPB12303221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173575bc51787c7a4629ca7a52ef9004e480b1a4aa9616b63f4d31a842aaf067. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NZPB12302515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0042931af27c73440b74277e58a591ea73b15a9a6406c101d9a48e24e8f74. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZNWS2414546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bb8c5082ff93b7a4e576181772aabf99a2507aac4c471d7ab352fd098884b8. 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/QZTB42451650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b34c86c886f95cb4657a1a92cb8e674adc010b3ca0fa09321d85d3b9f490886. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZTB92456661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d7180a603f8c77698b1ddbde2a14a04e84bb1c8b593f74c894751db5b3959. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZFYZ2557214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f5e0f3128e65723f2ca61a66326dc7bcd4f8a9a85670b708b2aae478c0af7f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZK6K2511458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38822f85120d68b22499ec40cfccc5529d0f6970abe5b6075dcfa8fb213da77f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/NZPB12500835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b34c86c886f95cb4657a1a92cb8e674adc010b3ca0fa09321d85d3b9f490886. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTB92456661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0042931af27c73440b74277e58a591ea73b15a9a6406c101d9a48e24e8f74. 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/QZNWS2414546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d7180a603f8c77698b1ddbde2a14a04e84bb1c8b593f74c894751db5b3959. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZFYZ2557214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bb8c5082ff93b7a4e576181772aabf99a2507aac4c471d7ab352fd098884b8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB42451650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f8dab8dbf422880555c77bb730b3d68c6db2b9a4ec195b0f88a1de042d8c73. 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/QZDA62445792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4720bba7875a71eb389421e060f97968889c7d05ca6cb5f8e6ace6378827aad5. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QT3EY2404890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86810e635e3063d5d2f9f45b7b16a5d5ba3b9c0dd57947dce186c078a07ce94. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZES72543410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f5e0f3128e65723f2ca61a66326dc7bcd4f8a9a85670b708b2aae478c0af7f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZK6K2511458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e1abdb26d6a2966c063442f8123af388b8c28a69dc2e932f7105d5f3adb277. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NZPB12501921.
Grains (feat. Siobhan Sainte and Mazbou Q)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2602abd0c354df2b92ee17c86e110f700691a49873ca9324514a590dd9bbc918. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NZRI12101490.