Leonard Tazvivinga Dembo, a.k.a. Kwangwari Gwaindepi also Musoro We Nyoka (born 29 December 1959 in Chivi – 9 April 1996), was a Zimbabwean guitar-band musician and member of the bands Barura Express
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 0xda1d4a3535fd5604ca9e6736576b5f80dabd4d0cd9e3e13017346a239b4fa37a. 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/f988108d-6b55-4e62-99a9-26b14dfe910c.json and https://artists.proofprofile.net/proofs/artist/f988108d-6b55-4e62-99a9-26b14dfe910c.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 0xa986e96b89dbb6c9bc3740c52437055e6a00fbc73b54362daab5ed16bdfc3b72. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZDA82447038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc900cee4604950690956384945267f73bb89047de3dc6b743b9d0b8f1baa0af8. 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/QZDA82447040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b367c39b39ace4dfd221f4c4a8633f1699a2ff6678e63eafda1d0307fb058bc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZES72426774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c08b9572c77f422e6cb91e449c46d7a10c4459010cf1a552b25a1798fbf7f3f. 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/QZES72426778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d52cfd0a1d99fbb1e9fd03011e2f55412473ff5d13ce04f0703482392429334. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GB96Z1102346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a91711cc9d196987a8fd8dddf71b8a52b852fbc2fcaf6a2428978c0eeee515. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GB96Z1102349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111514558267fc5e5dc06abf03ff027f1805b95a89961d6455d308ced6414250. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GB96Z1102351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a30b649ee5556a17c951c10081a28ecf8a91f932177aa3117a1c84dc193e439. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GB96Z1102352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde935a70dbeaf82f85cdc8ebe29abeb035cd99c185f3bb2802a7e4dff5b18856. 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/GB96Z1103360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468f9093271291b8950efbec87abd03d23162134b8ded295df6b6c2c114826e1. 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/GB96Z1103362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bcbdbee1bb4f10e147d072e35a94f7c607a01e52d194e801c3571a7f5c1d4b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR6V81652430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1caa6d70abd6b34dc653e091818716f24e10cea84c58e2a34ac5174f8a335c3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR6V81652431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b6b9df93987a66f42aa4d2be7359f2ba4651e29d488c471cc52a214348c50a. 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/FR6V81652432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c05552cf0ab2bd2e60de4a01b4b16935edca1506897c017830e5283654b0d7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR6V81673669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ec805004461972baef15365f9139ca1bda2abbf82b6b92e49949c93bb95e75. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FR6V81673671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748e8fbf43669df0cfabe049d78b8b741a3089962397dbb9710404801d640480. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GB96Z1103002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6359ba33622ad661f45c62922091858e7941c87eb41d5c71ab02ad50a93110e1. 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/GB96Z1103003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90514c14effca6325f9583890ed7cac03366db74e0a53452da414a2e270fe01a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GB96Z1103004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ca358a4fb042caabda89cfad3f560af461a28b4dced016d3cb2eb94dc11fd9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB96Z1103005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4918ba4578c3bc9a6b5a93227a08f6b6ff886e5aaa8c98186599d4d22d38977d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB96Z1103007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f7f04d471944a575b53549e10e59fa0fa453f48aca3ea581df140841cda16c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GB96Z1115069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3147b1bf5af8cb1d8f28113db224b211b03fd01e997c70249b735c3f267e50d2. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GB96Z1115070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe468226d9b7881fbd23537fdf9ab1ae1de5556f8909f586158856070ba8b820. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB96Z1115071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0bfc6f0041844b50755d04110ba8884374308ac0dc8ec1d112020c4e0e587a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GB96Z1115072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0a7db21c4dbec8957392715707cd593716cbea535f3dddc3c251cc593d084b. 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/GB96Z1115074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea025524fe983271300b3849f8b3d0d587f812d63f4167fc71c795b76cfc084. 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/QM7281411021.