Chimdi is a village development committee in Sunsari District in the Kosi Zone of south-eastern Nepal. At the time of the 1991 Nepal census it had a population of 4142 people living in 799 individual
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 0xc17f3546a148d7771b9a8f49f3fc61c1104137d8556d46d07ec26e23deac7f6c. Chain 2 (Bitcoin): anchored in block 953943 (2026-06-16T11:59:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2187e68e-c5cb-4b21-b181-db4fc79b53c8.json and https://artists.proofprofile.net/proofs/artist/2187e68e-c5cb-4b21-b181-db4fc79b53c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).