KLT may refer to: Kalmar Länstrafik, a regional transportation authority of Kalmar County, Sweden Kanade–Lucas–Tomasi Feature Tracker, a computer vision algorithm Karhunen–Loève transform, a mathemat
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 0xe5a26fd6945170bbd031032d8cbd0d61978db5eecfedb675436bb13803081bbd. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a736d36-1544-4ae3-bba4-02f5b3d525b8.json and https://artists.proofprofile.net/proofs/artist/2a736d36-1544-4ae3-bba4-02f5b3d525b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).