Sanak () is a 2021 Indian Hindi-language action thriller film directed by Kanishk Varma and produced by Zee Studios and Sunshine Pictures. It stars Vidyut Jammwal, Rukmini Maitra, Neha Dhupia and Chan
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 0x35b7d162689021b7c6f98d19b0b52bfb69931cf724089ffaf578f644ac70b6a5. 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/a495d7b5-27d5-40d7-8f7d-f4a43060f91e.json and https://artists.proofprofile.net/proofs/artist/a495d7b5-27d5-40d7-8f7d-f4a43060f91e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).