Metis Launches Hybrid Rollup on Devnet With ECC Enabled at Launch

Metis launched its Hybrid Rollup on a developer network Nov. 11, pairing validity proofs with its existing optimistic rollup as it prepares a transition toward post-quantum cryptography.

The design is intended to shorten withdrawal waits by verifying execution results on-chain. Metis first proposed the Hybrid Rollup in March 2023, with a goal of reducing a seven-day withdrawal period to hours.

The upgrade combines optimistic challenges with validity proofs from Ziren, an open-source zero-knowledge virtual machine developed by the ZKM project. It also adds support for ML-DSA post-quantum signatures to Metis’ decentralized sequencer, or DSeq.

The Devnet codebase supports both elliptic-curve cryptography (ECC) and post-quantum cryptography (PQC) paths, with only ECC enabled at launch. Its modular design allows components to shift from ECC to PQC over time.

Metis plans to launch a testnet in the first quarter of 2027 to demonstrate both verification paths and test the upgraded rollup architecture.