General Deepak Kapoor PVSM, AVSM, SM, VSM, ADC (born 1948) served as the 22nd Chief of the Army Staff of the Indian Army, appointed on 30 September 2007 and Chairman of the Chiefs of Staff Committee 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 0x1d81cb7cf51e1ac03b29201f426ba54f041d583b9d7364d2718256c579bd6fdb. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c29d6a1e-c036-4d1b-81f4-730d94cf0eeb.json and https://artists.proofprofile.net/proofs/artist/c29d6a1e-c036-4d1b-81f4-730d94cf0eeb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.