Arbitrum's Multi-Proving Model with Zero-Knowledge Tech Reduces Settlement Times

Arbitrum is making significant progress in implementing its multi-proving model based on zero-knowledge (ZK) technology. The goal of this initiative is to reduce settlement times for assets on L1 from seven days to a few hours, according to the platform's roadmap presented in early 2026.

The system integrates ZK proofs directly into BoLD, the $ARB settlement protocol toward Ethereum, without eliminating existing fraud proofs. This integration allows an assertion to be confirmed as soon as a valid ZK proof is submitted and a new Fast Confirmation Committee endorses it, reducing withdrawal times from days to hours.

One of the key technical milestones achieved is the extension of the prover to cover Stylus contracts, which extends the EVM with support for Rust, C/C++, Move, and other languages that compile to WASM. Arbitrum presents itself as the first production stack to make both EVM and WASM contracts executable by ZK.

Next steps include reducing costs and latency through Reth-based execution, proving the L1 message inbox to ensure end-to-end verifiability, and enabling ZK settlement configuration as a native option in nodes. Offchain Labs will bring a proposal to the DAO to upgrade Arbitrum One under this new scheme.