Leesa Gazi (; born 14 August 1969) is a Bangladeshi-born British writer, playwright, theatre director, and actress based in London. Her 2023 film A House Named Shahana was selected as the Bangladeshi
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 0x5736b298380702f2ce08d1679ea6dbd8b8ae42e8408c27a0f571ae44acc7d1b6. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71b6308e-d161-4619-a070-9588b4c9aa40.json and https://artists.proofprofile.net/proofs/artist/71b6308e-d161-4619-a070-9588b4c9aa40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).