Big Nuz was a South African Kwaito trio from Durban, KwaZulu-Natal, founded in 2002. The group was composed of three members known by their stage names Mampintsha, R Mashesha, and Danger. History 20
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 0xf934dc0974f59e12c830ac4c1d2913d4a91df731d3caefba672c2b34a151d105. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef6456ef-eaf4-41fc-8259-f66d564606be.json and https://artists.proofprofile.net/proofs/artist/ef6456ef-eaf4-41fc-8259-f66d564606be.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 0xaaa3627a2cfe97bd54cf1c0616fb082344d5f9efab3e0721a1c42b5a8dfe8bd0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:53Z), 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/ZAY362300919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d1acfeebc0ab4a915aff8a6a793f133a5c6928be5645fce062197c09782727. 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/ZAY362300920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b8d56fc4392cce380e4235f969f6a0fab28cbfac97468368c905ec7d0f6ab4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAY362300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8bfdcc65b57b7db96924029eb93e2b05269818f5a46794940aae7785a1a34f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ZAY362300918.
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 0xb2161f3460c0b7a45ef0e453dc9acb2b56a36c815694f918e29ccba7fd1a10ec. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ZAY362300921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eca1c5dff1cc8064ad39b3caff108ceac69425422ac24bf040cd0024d8ff11. 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/ZAY362200823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef715c3a7003a604924e96ccb0511e0ff56296cbd3a6652ae251f4fea66485c. 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/ZAY362200824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86432f53e53017e9dc0bdbedc1ec39b446d81ad5e3a77402835a2b52605e9ba4. 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/ZAY362200822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849dd7d6587f5936161b7f15bffc2c3a4f4cf4455efe380a635d9553a1ca38b2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZAY362200825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f17727229f279db06f547db05b24b19bd19eb008552386e937ba56a33a3ffbe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZAY362200826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e015c027a85f96e1a61a707127b891701f136f813836486d6a1a542e14ac3d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAY362200827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d01f5e7a7931690d6bd53aaf4648595c4af322a730ac544888eb23ea08d8b8. 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/ZAY362200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c01297575262f93b719dc96d28632318ecf776d199ed01218432a6783d889. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZAY362200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc7f04fa21b5257ba9f0e14801f89c0fcd6aeb379036c23cd71d31909dea712. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZAY362200831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd0a5f925546fce6c9b1f3c07a42a99037ae53526acba14d1ebd220a32bb415. 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/ZAY362200834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f5668d7501cd6f5f5bfe8f7e7dbd83bdce12fa7642def3edb542394a304ed0. 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/ZAY362200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08562ca744894f5e6b68c72ed657276fcc6351fd6eb9975886ac656300887bd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAY362200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34df5b938005577bf3105332a22787b92bbe9a444ee904e31a76202a0e18189. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/ZAY362200829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f35bdb64e0f7c6733c80c3f8ffc60efdc084b0ef141560b508f8a26be2c3650. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ZAY362200832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30811043da1c6c6d4543015e9edc148a60b1eaaacbdc3239d8068f566af84370. 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/ZAY362200833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a93ac12040db1125177993c0e55fd58cd4373721aebcdc5b2e5bc23e014874. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZA2EH2200033.