Barjo () is a 1992 French film adaptation of Philip K. Dick's non-science fiction novel Confessions of a Crap Artist, originally written in 1959 and published in 1975, the only non-science fiction nov
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 0x5b83bc0ed5c8c694a5ec0c43ae1be777980c1a7f5c50023c1840567e173ab4cc. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3014766-872b-4352-8351-efec3c0fe021.json and https://artists.proofprofile.net/proofs/artist/f3014766-872b-4352-8351-efec3c0fe021.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).