Pandit Prateek Chaudhuri (7 September 1971 – 6 May 2021) son of Padmabhushan Pandit Debu Chaudhuri, was an eminent Indian classical sitarist of the Senia Gharana (school) and graded as a "Top Class" A
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5c5cd08a6cab409935ab6792f5cc5be0fb90443b42bab23ae74c9ff692e4bd. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efa5be99-2aff-4ff3-bb1e-ddf058107699.json and https://artists.proofprofile.net/proofs/artist/efa5be99-2aff-4ff3-bb1e-ddf058107699.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).