Shavand () is a village in, and the capital of, Dargazin-e Olya Rural District of Shahanjarin District, Dargazin County, Hamadan province, Iran. The previous capital of the rural district was the vill
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 0x319a8ac88a56e4b2d637dba14729da87464724ac9898712511e59e0b9623e4a1. Chain 2 (Bitcoin): anchored in block 953962 (2026-06-16T15:03:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27a16f4b-0156-424b-a609-74574d215c66.json and https://artists.proofprofile.net/proofs/artist/27a16f4b-0156-424b-a609-74574d215c66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).