Shyam Sundar is an Indian academic and professor at Banaras Hindu University. He works on Infectious Diseases - Leishmaniasis & HIV/AIDS. Publications Visceral leishmaniasis: what are the needs f
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 0x3e4a09adfe9c179bb112bdfa7d7082706fbd553e7b5d7667f1da3fcafd58a8d9. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b455d1bc-ef92-492e-9766-4350535f3f53.json and https://artists.proofprofile.net/proofs/artist/b455d1bc-ef92-492e-9766-4350535f3f53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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