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 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 0xdb48a8d0eccc487b9dd160b89a6a21802e716865b904d32b9562fefd89e26fe9. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6739e1c-1b72-4f9c-a895-b18ce9dcdf55.json and https://artists.proofprofile.net/proofs/artist/a6739e1c-1b72-4f9c-a895-b18ce9dcdf55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).