Zarman (, also Romanized as Zarmān and Zarmun) is a village in Doboluk Rural District, Arjomand District, Firuzkuh County, Tehran Province, Iran. At the 2006 census, its population was 200, in 51 fami
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b7edf07b897d43c501f15df5a2838c0c89182ad1643e7d432703a8f75e644a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2d91ac0-634c-411e-9664-9bf6dc69cca2.json and https://artists.proofprofile.net/proofs/artist/f2d91ac0-634c-411e-9664-9bf6dc69cca2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).