Abhinandan Banerjee is an Indian film director, scriptwriter, author, essayist, magazine editor, publisher, illustrator, painter and graphic designer. His debut feature The Cloud and the Man, which pr
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 0x86b085041c75d103c33c001fb9f2c2c347a7b79dec4e21c157fa3956f1b03208. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1c11bb2-f2b3-4d4c-95be-5503c25c203a.json and https://artists.proofprofile.net/proofs/artist/f1c11bb2-f2b3-4d4c-95be-5503c25c203a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).