Veridise | Blockchain security expert Jon Stephens

Jon Stephens

CEO & Co-founder at Veridise

Jon’s expertise and interest lie in the formal methods of computer science: program analysis, program verification, synthesis, and security.

During his PhD studies at UT Austin (as part of the UToPiA Group), Jon has published research and developed tools in smart contract and ZK security (e.g., SmartPulse and Zequal).

Earlier, Jon graduated with a B.Sc. and an M.Sc. in Computer Science from the University of Arizona, where he conducted research in malware detection evasion, analysis of exception-based control transfers, covert channels, static analysis (covert collusion detection), and dynamic analysis (language-agnostic interpreter optimization).

At Veridise, Jon has audited a wide range of protocols, including smart contracts, blockchain implementations, and ZK circuits. Jon has audited clients such as RISC Zero, Succinct, Semaphore, vLayer, and Ankr

Experience overview

Experience

Circom, Go, Leo, Rust, Solidity, Sui Move, Typescript, o1js, Substrate, arkworks, Halo2

Specialities

Smart Contracts, Zero Knowledge, Infrastructure

Previous work

Academic work
Full audit reports
  • Succinct: SP1 Call Contract, 2 Jul 2025, a security assessment of SP1 Call Contract
  • vLayer, 12 May 2025, security review of trustless verifiable data infrastructure protocol
  • RiscZero: Steel, 4 Oct 2024, security review of RISC Zero’s Steel library
  • Ankr protocol, 17 Feb 2023, security review of token staking protocol
  • Semaphore, 5 Jan 2023, security review of Groups v3
  • Unirep, 28 Aug 2023, security review of Unirep’s Universal Reputation Protocol

Conference presentations

HoZK Radio (podcast)

29 min | HoZK Radio

Uncovering Hidden Security Risks...

20 min | Modular & L2 Day

Unifying ZK: A Comprehensive DSL...

19 min | ZK Accelerate

Taxonomy of ZK bugs

16 min | ETH Denver 2023

Hybrid Attack Synthesis for DeFi

14 min | Solidity Summit 2022

Are your Zero-Knowledge Proofs...

26 min | DevCon 2022

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