Dmitrii Zatona
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Overview
Skip to Content AI agents & assistants — machine-readable index at /llms.txt About About I'm Dmitrii Zatona — Systems Engineer and Architect (Rust · Applied Cryptography · Confidential Computing · Embedded Systems), based in New York City, working remote and async-first.
News
What "Traceable Lineage" Actually Requires: A Teardown of the FBI TSC AI Sources Sought
An engineering analysis of the FBI Threat Screening Center AI RFI: why record-level, tamper-evident provenance exceeds what any lineage tool ships today.
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Trust Without Keys: Why Our Receipts Verify Without Knowing the Signer
ATL Protocol v2.0 flips the PKI model: verifiers don't need the log operator's public key to validate a receipt. The recommended path roots trust in external anchors (RFC 3161 TSA, Bitcoin OTS); the Ed25519 signature is available as an additional integrit
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The Super-Tree: How One Merkle Tree Proves Another
ATL Protocol uses a two-level Merkle tree architecture where short-lived Data Trees feed into an eternal Super-Tree. A genesis leaf with a domain separator cryptographically chains trees together. Two receipts and one function call prove the entire log wa
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I Shipped a Broken Consistency Proof Verifier. Here's How I Found Out.
Building RFC 9162 consistency proofs for ATL Protocol, I took a shortcut that turned out to be exploitable. The story of a simplified implementation, the attack that broke it, and the full RFC 9162 verification that replaced it -- with five invariants, co
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98 Bytes That Prove Your Document Existed
The checkpoint wire format in ATL Protocol: a fixed 98-byte binary blob with no parser, no ambiguity, and a signature that lives outside the signed data. A byte-by-byte walkthrough of the design decisions behind cryptographic checkpoints.
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Dmitrii Zatona
New York