Joe or JOE may refer to: Arts Film and television Joe (1970 film), starring Peter Boyle Joe (2013 film), starring Nicolas Cage, based on the novel Joe (1991) by Larry Brown Joe (2023 film), an In
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 0xca9f63753c910838e5f926c1844fcf3ed481198a1f221bd2a0e2d622682a04a5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ca33dca-683f-4ba5-9b07-34526d0a9e31.json and https://artists.proofprofile.net/proofs/artist/5ca33dca-683f-4ba5-9b07-34526d0a9e31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).