Zohan () is a city in, and the capital of, Zohan District of Zirkuh County, South Khorasan province, Iran. It also serves as the administrative center for Zohan Rural District. Demographics Populatio
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 0xff503dcbc2ddc7a1a3cd6752b10e7a04fc7dcdaab313ca1c7f95f80842451b71. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca51fafe-bd52-46ea-852f-35ced6709b88.json and https://artists.proofprofile.net/proofs/artist/ca51fafe-bd52-46ea-852f-35ced6709b88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).