Kanak Chapa (; born 11 September 1969) is a Bangladeshi singer. She received the Bangladesh National Film Award for Best Female Playback Singer three times, for her performance in the films Love Story
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 0x912af2c716fbb558c09f0333a5d41fc10c11b3557541bd468feb1f81bc354e8d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abd97535-f618-456c-a231-282b70c9ac09.json and https://artists.proofprofile.net/proofs/artist/abd97535-f618-456c-a231-282b70c9ac09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Danga Domon (Original Motion Picture Soundtrack)
Matha Gorom (Original Motion Picture Soundtrack)