Limun (, also Romanized as Līmūn) is a village in Mazkureh Rural District, in the Central District of Sari County, Mazandaran Province, Iran. At the 2016 census, its population was 365, in 117 familie
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 0xd924d170d1ccbc84b82c2e0e7d81063f3206f7ddf68b2401c132e86fef3a489a. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/007614b3-4b73-45bf-9640-689fd29e70b2.json and https://artists.proofprofile.net/proofs/artist/007614b3-4b73-45bf-9640-689fd29e70b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).