Tutu Puoane (31 May 1979, Atteridgeville, Pretoria-) is a South African Jazz singer. She grew up in the township of Mamelodi, Pretoria. By 1997 she had already been performing in Johannesburg downtown
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 0xb07e06866d102498b43cbe0aff87783a7170fe1f08b34d42964c5dfbddd71f65. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7c9ab3f-30bb-49c7-bfc5-043d449d9018.json and https://artists.proofprofile.net/proofs/artist/b7c9ab3f-30bb-49c7-bfc5-043d449d9018.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 0x165dd88815405fad230f661a41c7e76a1f4096a4ff43de21b41eec284ad67b18. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLB360070201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687fb9475c5e515e051c7c501e871fc66b0149f1a7de6eeccab258282db68277. 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/BEP131800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5973248d5a86e4a5d2c72191cc7c9c5c85c34ab86bc97009538323986126fa4. 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/BEP131800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437af0a7590442ee980bca1a97d1fb67fd706ffc89db82d09a746ba51568fcb2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEP131800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc37ff988f258703e680d81842c022d5b996de3fadba527af3f0addf7d14f77. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEP131800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1c742ece1d27073a849a27826199bff4385b05939d385d2a20469e33680788. 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/BEP131800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6895a5c557b88f4f21005972b750a2b6b995bc5c5be902de74c1edf721e0b801. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/BEP131800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa106f7349477a276050e1c861d346e7a449923fad4dc8c3a4ffc82aadad395eb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEP131800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5edb457b74a2afdd368ac2660ccc6865d36f99166c812a1601c732ddf811365. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BEP131800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c46677576c19e66456fcc7627ec038cebf7d8ea50dd786ff82dbc82cbff73e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BEK882402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f614b707940565a927d3f87ee1c7eca295999d58a876f57a5c1a38e4b89d83. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BEK882402002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac534e1cb2fac43ce6d3afa6f2bb7aa2286640603998cf59830c7d155397b2dd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BEK882402004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aca60e428e456f5f83a0508d4c0be437df25bd8f661a2c51454a61580540ab3. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BEK882402006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd351bc325d165f69af0c033fae3e86bc0dedca74dee55a23145c4324e25b52d9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BEK882402008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30814baf4f60033280493dc04efdd4d0498f2028deece1e6de8d5d35eb1187a0. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NLB361000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec82b05d405363e6f1a2eba201d9ac75a7dcd163e4f61b05443937f67210c3. 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/NLB361000106.