Anubrata Chatterjee (born 1 June 1985) is an Indian tabla (hand drums) player of the Farrukhabad gharana of Hindustani classical music. He is the son of tabla player Anindo Chatterjee. Career He de
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 0xd3586d7c603bfcc6609bfb0dbe5ea69bfce558d9bb348732a344475bda832b38. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f824e350-9bfa-4f03-b16d-fe2d1031892d.json and https://artists.proofprofile.net/proofs/artist/f824e350-9bfa-4f03-b16d-fe2d1031892d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).