Barbara Whirimako Black (born ) is a New Zealand Māori recording artist and actress. Black sings mostly in the Māori language, uses traditional Māori musical forms and collaborates with traditional
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 0x6a1076d970a6f32d9d09cd747c0641d55a6301015c1ea15010fcd28d99174c1d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27a16723-665c-41d3-83bf-06e8bb84bc3e.json and https://artists.proofprofile.net/proofs/artist/27a16723-665c-41d3-83bf-06e8bb84bc3e.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 0xe4b8a2610138aaba140dcbfae0f068a2b821ddadcc9c4b71be8d77bb827b8d97. 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/NZMM10900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741abd4fc412c415b133f94cd16a798fa74c58533e61ba72d8b798229888e0b4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NZMM10900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb924dcedb45d40e203af2b3af76166339d6c40dac7c1af60f33e0f7ea93e0c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NZMM10900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309da1a335f8f6f6a89623876d016f3f1283d0dc1cbdbadeecf30de8fe68f59f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NZMM10900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a67f5e2b74d1f7fdc624009364de1f7f8c4622bd2e17046da991be1e91acf3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NZMM10900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b8aa6a55cc348e640f00ed68c7ed6cf144fd1c6c3af9983b7bf365f899a08b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/NZRI11302718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8989bf14f8b07edc218e3192326b6a6c03707647eaed024ef6aa007d69b9886. 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/NZRI11302722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd87d524635d414ed1380cc27e54c91121b9aa45e38d8caf70eb88eadab936e7. 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/NZRI11302724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2be62df94670873dae0bcd8aedcbc8d01d08f9904c48d0166e0cd7bbdafdcf3. 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/NZRI11302729.
Sings (Tui Award Winner Best Jazz Album 2008)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e38ccbfdadcde62445c739f6ac804643c89f70e0515ce8b096aa829b0bfbe8. 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/NZMU00400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141ceec3f3ecfeaa01dc1ddd76931babe298fbd3d794db27088f076357dababb. 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/TCAGY2383173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef26e532aec4181b0e58854976153883d708915b70ce9b0eb7e66acde318f54. 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/AUXN22492704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19b970e3135a37f7dd9542c9351218d7076a245c4c0962fd8f12205aecde94a. 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/TCAHH2334776.
Tui Dub [Live with the Nzso Vinyl Boxset 2018 Remaster]
Live with the New Zealand Symphony Orchestra - [Vinyl Boxset 2018 Remasters]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd908be2df845b388d1a507dacde148ae9a91caa0236cdcbd5596fe0d8643354f. 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/TCAHF2380358.