Hansi, is a historically important city and municipal council in the Hansi district of the Indian state of Haryana. Earlier Hansi was larger, more prosperous and more important city than Hisar, as evi
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 0x9a81b718438a3105d6779e179301e2a23442d5d92c5d7be5de2e81017d12b924. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d0cb7b0-051e-4009-bc06-036615b839f7.json and https://artists.proofprofile.net/proofs/artist/1d0cb7b0-051e-4009-bc06-036615b839f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).