thumb|The Herakleia head, probable portrait of a Persian (Achaemenid) Empire Satrap of Asia Minor, end of 6th century BCE, probably under Darius I A satrap () was a governor of the provinces of the a
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 0xad7d9bc35a12301d4c84aa869ea23c0d34428df7c88960d8ae3025781c713de2. 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/e0043754-a636-4c97-a6ad-8196937b0b6c.json and https://artists.proofprofile.net/proofs/artist/e0043754-a636-4c97-a6ad-8196937b0b6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).