Yoon Hyoung Lee

Researcher & builder in blockchain infrastructure

I work on cryptographic infrastructure, protocol implementation, and verifiable systems.

My current focus is post-quantum blockchain infrastructure and deployable protocol primitives.

About

I work at the intersection of cryptography, protocol design, and blockchain systems.

I'm interested in turning technical ideas into implementations, benchmarks, and public technical artifacts rather than leaving them as abstractions.

My work is guided by a simple question: how can advanced cryptographic and protocol ideas become more deployable in real systems?

Work

NTT Precompile for Ethereum / OP Stack

Implementation and experimentation around EIP-7885, now published as a Draft EIP for an NTT precompile on Ethereum, including OP Stack integration and Solidity-side testing aimed at making lattice-based cryptographic operations more practical on-chain. The work is directly relevant to the "NTT precompile(s)" direction shown in Ethereum strawmap, within a broader post-quantum roadmap spanning execution, consensus, and data-layer changes.

EthereumOP StackEIP-7885CryptographyPrecompilePost-Quantum

EIP-7885 EIP PR #9374 (merged) op-geth ntt-precompile-test strawmap

Sui Falcon Experiments

Experimental work exploring how Falcon post-quantum signatures can be integrated into wallet and blockchain workflows on Sui.

SuiPost-QuantumFalconSignatures

GitHub Kostas on X Soundness on X

PKP / Wallet Tooling

Developer tooling for Programmable Key Pairs (PKPs), including a Sui integration library and wallet-side experiments built with Lit Protocol.

Lit ProtocolPKPSuiWallet

pkp-sui LitGrants #66

Awards

Writings

Chain Abstraction and MPC Protocols

A short exploration of chain abstraction and MPC-based approaches to cross-chain coordination and wallet design.

Solana Transaction

A technical note on Solana transaction structure, execution flow, and developer-facing mechanics.