JDT may refer to: Jamaica Dogsled Team Johor, also known as Johor Darul Ta'zim, a Malaysian state Johor Darul Ta'zim F.C., a Malaysian football club JDT Racing Team, a Malaysian Racing team Jour
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 0x1ff621a1592a58bc8e26e582fec1bf58d0ffa819b87e2c86f8d298806a8f8d19. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e6419a5-5aa2-4667-857b-bfa770d5ef8f.json and https://artists.proofprofile.net/proofs/artist/3e6419a5-5aa2-4667-857b-bfa770d5ef8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).