Deb Chowdhury concert photo|thumb Deb Chowdhury is an Indian singer, lyricist, composer, cultural activist, researcher and television anchor. Folk music is his primary choice of genre. He is working
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 0x03fe732210cb4a26b9ff758f8c81eeca081cfbdc1b89843ebd5614e06c4fcddb. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdb1571e-c31f-4d4b-8300-0939a1d6fc81.json and https://artists.proofprofile.net/proofs/artist/fdb1571e-c31f-4d4b-8300-0939a1d6fc81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gour Gour Bole (From "Abar Asibo Firey")