Linea, the Ethereum second-layer network backed by Metamask wallet developer Consensys, last week presented a proposal as part of the protocol design detailing the steps needed to become a fully decentralized L2 chain.
The proposal, titled "Towards Linea Decentralization," was put forward by Linea software architect Florian Huc. It includes a high-level framework for transitioning the zkEVM to a permissionless system and by modifying its existing Block verification, block proposal and finality processes to establish decentralized governance.
The purpose of this proposal is to achieve finality for blocks at both Layer 2 and Layer 1 levels. In this setting, Linea's sequencer will confirm L2 finality, while L1 finality is guaranteed when the L2 block's data and proofs are published to Ethereum.
Linea contributors also propose replacing the network’s current L2 finality system with a proof-of-stake (PoS) model for block validation, which would require validators to stake tokens and participate in the QBFT consensus algorithm. The proposal states that validators who misbehave will be subject to slashing penalties, including the destruction of some of their staked assets.
The proposal also proposes the introduction of an on-chain auction system to select block proposers, allowing any node to bid for this role. The highest bidder will win the block proposal and the bid amount will be burned to reduce the total supply of tokens.
In addition, the system has a recovery mode that ensures the system can continue to operate even if the validator set is inactive for six months. In this case, any node can start confirming the finality of the block.
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