JDC can refer to: American Jewish Joint Distribution Committee, a worldwide relief organization Jeju Free International City Development Center John Deere Classic, a PGA Tour golf tournament Joh
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88123763c24553c86c5b95add8044e310937d7444be91490af0ac5c4e6bc4357. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/631409ee-4a05-4202-adf0-64632147dca1.json and https://artists.proofprofile.net/proofs/artist/631409ee-4a05-4202-adf0-64632147dca1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).