thumb|A 17th-century engraving of the leaders of the Gunpowder Plot, a failed assassination attempt against James I of England Treason is the crime of attacking a state authority to which one owes al
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 0x5b71420925d2d036181bd9c70755667ac5653bec759023d0ef9d0d7e2e7c6889. 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/80596dc5-5ebd-4142-81c0-dd54af00f848.json and https://artists.proofprofile.net/proofs/artist/80596dc5-5ebd-4142-81c0-dd54af00f848.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).