Kelvin Kambwiri (born May 20, 1993), best known as Kell Kay, is a Malawian RnB artist and songwriter. He was born and raised in Lilongwe,Malawi. In 2017 and 2018, he won a Nyasa Music Award as Best R&
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 0x76488aef2b8a82b4973f7584837635c92ae66db3b9a60bc34ca03d97d508dee6. 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/7a1f4259-40bb-4ecb-a9bb-16e027fdf39b.json and https://artists.proofprofile.net/proofs/artist/7a1f4259-40bb-4ecb-a9bb-16e027fdf39b.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 0xc0ff1e306f04d721cfd30a01db351260e0d8c33d2420504b3149e11ece7556d1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX281911153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda414ff8471c9c4fd31ae0cdd20347f3f7217c6a105678a4295bb562d57ca5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:28Z), 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/FRX281911154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9609c61b08a2a7c0f0e54b73c0f388ffa84a6e522c2164634bdde52b1da72e7b. Chain 2 (Bitcoin): anchored in block 957523 (2026-07-11T04:55:40Z), 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/FRX281911155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7bb5e55f187d87990acd45ef90174b67e15e6c2f266bf10e63c409d534dc3e. 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/FRX281911157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a874a5b5888edd9e01af592b484b77ae6c4b3ba0ff9ca34934003ace7d8ec44. 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/FRX281911163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8c7e548e296df629a3a428679cd03ca4f57791b296481f872bb5f9b3a85b4b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:51:12Z), 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/QZMZ92143040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d2860947bd8538e9073ad794dfc27aa8379b716a7a991fdf2e29087ef4f96c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6Q2258776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22467b922a2508095192de04c5a34d0484f2e8187d4696abafbe717a1396ea. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:44Z), 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/QZK6Q2258777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd381d7b48e1ad093b71178a64a992e02a8e96ced2470e3f3bcfaf1a1a9488. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6Q2258782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db834c10c0c46f77398da0298d2ce923ef048b383c53da5bf5b2e4de9da2c43. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZK6Q2258790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff588e54ef99a8dcab0507c05e6723d393ff7ebb11fc59c77387f998475f401. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:11:23Z), 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/QZK6Q2258793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a09e2823be7a636c6bf7bab474cb1a53e9f70e673f0245c9de5058f816d512a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:28:22Z), 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/QZK6Q2258796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7c6f0746b4425b1b4f9c919c2b0bff7ed6520e0f66e648256e032435d8f6fa. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:21Z), 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/QZK6Q2258797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97d3e44951e9f8f1a78a3f41966586604ffc6cb25d6a97e1d417bbe444ee2f4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92563793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb466f48310e3c839a0c3cb1c548a63aaa00bcf12f9db6a678b94322e5bd519a7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:11Z), 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/QZNJZ2509798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73da172135bb8d29944c8dd9c918ad664947ee7ab73a02a0726ff18df380912e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFH2330378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a10fc3dee571f754465465ef2bef787cc1516453c7dd6ca24426bcf0898e173. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN52249611.