John Ye

About

I work on EVM and Ethereum infrastructure code. And I like problems that are deep enough to be annoying and places where being almost right is still wrong.

ethdiff.com

Experience

Security Research

I work on EVM, blockchain infrastructure, and protocol codebases, with a focus on chain / node logic, asset accounting, invalid state transitions, and transaction execution paths. I have built gas-sensitive Solidity routing systems and contributed to Ethereum infrastructure projects including Reth, Geth, revm, Base, and OP Stack.

Sep 2025 — present

Optimism Foundation

Researcher

I worked on OP Stack protocol research across EIP-4844, fault proofs, bridge flows, deployment paths, proposer / batcher, op-node, op-challenger, interop, and custom rollup workflows. I also debugged OP Stack deployment and runtime issues, and contributed to Optimism developer resources, protocol documentation, and long-form codebase guides.

Jan 2024 — Sep 2025

Amber Group

AI Advisor

I advised Amber Group on AI and Web3 infrastructure research workflows under confidentiality obligations.

Dec 2024 — Mar 2025

Ethereum Foundation

Research Contributor

I researched Optimism sequencer support for ERC-4337 bundlers, focusing on RPC / API behavior, sequencer flow, test cases, and bundler compatibility. I also worked through geth, execution-apis, hive, and reproduction paths before shifting into OP Stack workflow documentation and codebase research.

Jul 2023 — Nov 2023

Open Source

github.com/joohhnnn

Reth

Ethereum execution client.

go-ethereum

Go implementation of the Ethereum protocol.

OP Stack

Optimism monorepo for OP Stack protocol software.

revm

Rust Ethereum Virtual Machine.

Articles

hackmd.io/@joohhnnn

01 / OP Stack Guide

Understanding Optimism Codebase

Code-flow notes across sequencer, batcher, derivation, block sync and p2p paths.

02 / Fault Proofs

The Book of Optimism Fault Proof

Mechanism notes across op-program, dispute flow and verification paths.

03 / EPF

Ethereum Protocol Fellowship Final Update

ERC-4337 sequencer support, API testing and OP Stack documentation work.

04 / P2P

Application of libp2p in Optimism

op-node p2p notes on host setup, gossip propagation and peer scoring.

EPF Research Log

Weekly notes from the fellowship: ERC-4337, OP Stack devnets, Hive tests, libp2p, derivation and op-geth paths.

W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 W11/12 W13/14

PoC Dossier

Redacted proof surface for selected security findings.

Security work should be backed by reproducible evidence, not only logos. This dossier collects selected local PoC notes, harness-based reproductions, impact writeups, and disclosure-state records across EVM protocols, execution clients, L1 / L2 node logic, and market infrastructure.

Public view is intentionally redacted. Full notes are gated per record; reports still under active review or remediation stay withheld.

Open Dossier PoC
Evidence

Selected proofs, impact summaries, disclosure timers, and gated full notes.

Open PoC dossier →

Security Contributions

dYdX

Confirmed Critical severity research, including runnable PoCs and impact analysis where permitted.

Base Chain

Critical-level finding, with runnable PoC and impact analysis.

Monad

Confirmed vulnerability reports across protocol and execution-path targets, with details under disclosure restrictions.

Sei

Confirmed vulnerability reports across protocol targets, with details under disclosure restrictions.