Riwan is a village in Shivgarh block of Rae Bareli district, Uttar Pradesh, India. As of 2011, its population is 3,220, in 556 households. It has two primary schools and no healthcare facilities. The
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 0x33a9aa85d549f320ebc4fbf8e478a0f4eb36918e3a45ec8edd064302a2075584. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a391a96-7681-44c1-95f4-883554581d2b.json and https://artists.proofprofile.net/proofs/artist/7a391a96-7681-44c1-95f4-883554581d2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).