The Spy may refer to: Film and television The Spy (1914 film), a 1914 American film directed by Otis Turner The Spy (1917 American film), a 1917 film released shortly after the United States ent
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2933e40803ac0de8740682eca4a833a39ebe21185c5b9b0593e9ab80167e847. 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/8ff28fcd-22b5-44f9-81e3-d4dd6368f0c8.json and https://artists.proofprofile.net/proofs/artist/8ff28fcd-22b5-44f9-81e3-d4dd6368f0c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).