JD, J.D. or jd may refer to: Arts and entertainment JD (film), a 2016 Bollywood film J.D. (Scrubs), nickname of Dr. John Dorian, fictional protagonist of the comedy-drama Scrubs JD Fenix, a ch
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 0x7fc07d831aa437d33f13cf5d419f585ce801c75ed7bc1c20945fe4aca26165c9. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a8f3b73-bb50-49b6-815e-c49e24c27e7d.json and https://artists.proofprofile.net/proofs/artist/0a8f3b73-bb50-49b6-815e-c49e24c27e7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).