Airbender enters the @eth_proofs leaderboard as the fastest zkVM! Airbender proves ZKsync chain blocks in ~1 second, and is now proving @ethereum blocks in under 50 seconds on a single GPU, helping push the Lean Ethereum roadmap forward.

2025 has been a breakthrough year for ZK, with near real time proving finally here. What used to take hours now takes seconds.

Two years ago, ZKsync cryptographers decided to write a new RISC-V zkVM from scratch. Switching to RISC-V provides many benefits over older zkEVMs. Earlier this year, this decision was further reinforced by Vitalik’s suggestion that Ethereum may also transition to RISC-V.

Today, everything has finally come together. Airbender, with a single 4090 GPU, can prove Ethereum blocks in <50 seconds, and we’re excited to see it in #1 place on the EthProofs dashboard.

Real time ZK is a breakthrough technology, and offers ways to extend the verifiability that is core to public blockchains. This is how we build incorruptible financial infrastructure.