Takun (, also Romanized as Tākūn) is a village in Ahram Rural District, in the Central District of Tangestan County, Bushehr Province, Iran. At the 2006 census, its population was 13, in 4 families.
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 0x82e071356322a6ba41bcf74cb1534f5a1becffab2479d82f24c498780ef05d08. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84ef0cbf-9e15-45fb-b365-f13cf5bbd202.json and https://artists.proofprofile.net/proofs/artist/84ef0cbf-9e15-45fb-b365-f13cf5bbd202.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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