thumb|Vusi Mahlasela performing at the 100th birthday celebrations of Die Burger in Cape Town, 2015. Vusi Sidney Mahlasela Ka Zwane (born 1965) is a Zulu South African singer-songwriter. He was born
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 0x234f6956652f3078236ec50731395d8e2db6596a1826dcd68fbc43fa233e9191. 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/c253011b-5416-4c7e-b190-cbd08fdc4af8.json and https://artists.proofprofile.net/proofs/artist/c253011b-5416-4c7e-b190-cbd08fdc4af8.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 0xbec0fb65c4f881fbb9c803456c35a95d12fcfacaa555e1ea61bfa0a34682d855. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ZAA019200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dba309a230aebea0aae7ace77b82cca11752fef40309e1313fcd4008835b9f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ZAA019200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266a7765255c49e60306fa94299a357d20d09e9162c99187fb4489a292a6a4c9. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:01:42Z), 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/ZAA019400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ebbe29cda8f9945ffe22f26a646685a3e5fd0836b2f3bf4eed657dc141319c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ZAA019700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7593aa045c7228e9d85c324492e12b96cf0d0b04dcbf8bef65a2c858e91bd6dd. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ZAA010600431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d05dae85608b90cd4b6de85b0a90ee82128629aae38ce618d5b7f3fbc288e9d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:00Z), 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/ZAA011000347.
Sing To The People (Live From The Lyric Theatre, Johannesburg, South Africa/2012)
Sing to the People (Celebrating 20 Years of When You Came Back)
Sing to the People (Celebrating 20 Years of When You Come Back)
Sing to the People (Celebrating 20 Years of When You Come Back) (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8839a6b6cf555b73e865e5ba33d6f7bf791e102dabdc80115b1ecb365d6acd0b. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:01:10Z), 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/ZAA019400300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0b485208c51a9d62cc6b3a39e91d421c3ae160d4d378ebd101c0dbf1e32f3e. 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/ZAA019700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b5d0cffd0fb678c1eba47ed3405b762a071447c54fb8528e10227f326ebe3a. 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/ZAA019200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec0fb65c4f881fbb9c803456c35a95d12fcfacaa555e1ea61bfa0a34682d855. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T03:58:54Z), 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/ZAA019200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d5f58abe4390936c193eb00134047fcc8231b6bf490843d00685c16d5e0912. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ZAA010000436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f344ae82fe6534290f78e6f091c7842ad99c9004a236aa85ccb26f087960ab. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DEG932101875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d38961a69053dd3566c2067b79c02eff5d2d867365f91da0d1a030e91660a1. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/DEG932101886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfa179c82df9d4e50c0a393536584e49d28dfff9d43b7fd241bf598c134843b. 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/USA2P1331190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff35d0fcee9d4fcdef74e5424858f26cc6e747e9740ef77d82fbb1fa324686. 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/USQY51409364.
Africa in Harmony: 50th Anniversary Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff35d0fcee9d4fcdef74e5424858f26cc6e747e9740ef77d82fbb1fa324686. 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/USQY51409364.
Nakupenda Africa (feat. Angélique Kidjo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db2a9eb76dbee99953c08e7430ced2abde561152e2d01bb7fc7824e7908f018. 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/ZAA011000358.
Everyday - Live From Saratoga Performing Arts Center, Saratoga Springs, NY
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ae9f208f18246139d2ea431d2a796bdf4c942c1b6d3e411c4c2d5e861171eb. 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/USRC10602112.
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 0xfad5aac09d1e9da1b6c63c61c8bd7fdecc4d57baa4fd5bccf3c9ef1216527f0c. 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/ZAC032311622.