JJ or jj may refer to: Arts and entertainment Film and television J. J. Evans, a character in the 1970s sitcom Good Times Jennifer Jareau or JJ, a character in Criminal Minds John Diggle Jr., 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 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 0x05b5ade659e5f7380731a574c346070fd6d3c8a723737c8c678768525eeabb16. 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/79840676-138f-4dd7-a2dc-0fdb4de33b57.json and https://artists.proofprofile.net/proofs/artist/79840676-138f-4dd7-a2dc-0fdb4de33b57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).