Dilshad Nahar Kona (born 15 April 1983; known as Kona) is a Bangladeshi singer. She won Bangladesh National Film Award for Best Female Playback Singer for her song "Tui Ki Amar Hobi Re" in the film B
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 0xb1da0bf606d4702911a50a059427673710b27c79ce9e7559e24e77c8febce0a9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/862e434a-5397-4c8e-a655-ba0a187a0e6f.json and https://artists.proofprofile.net/proofs/artist/862e434a-5397-4c8e-a655-ba0a187a0e6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).