Moushumi Bhowmik (born 29 December 1964) is an Indian singer-songwriter, writer and researcher based in Kolkata, she is known to perform Bengali folk songs, as well as her own compositions. She has re
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 0xad0bbf81f4c6f59861b128ef034402b5d328e55a4249bef8e5ca23c6f771d153. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54e7b387-732f-414e-b78a-8b6bf65897c3.json and https://artists.proofprofile.net/proofs/artist/54e7b387-732f-414e-b78a-8b6bf65897c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).