The strategic decisions and journey of Mantle, from BitDAO's inception to the Mantle V2 upgrade, offer valuable insights into building a successful Layer 2 blockchain.

Currently, most of L2 projects rely on a single sequencer. Metis, as the first L2 chain to decentralize its sequencer structure, has been resolving structural issues stemming from dependency on such single-sequencer structure.

Astar zkEVM is the first chain built with Polygon CDK to be connected to the Polygon AggLayer. This article will explore an overview of zkEVM and examine the structure of Astar zkEVM.

Recently, Swell announced that it will build its own Swell L2 using Polygon CDK. Swell L2 will use the restaking token, rswETH, as its native gas token, creating an environment where users can optimally utilize LST and LRT.