If traditional blockchains are like a closed machine, then @Caldera Official 's #caldera is more like an open "Lego block system".

It reconstructs the blockchain world in a modular way: settlement layer, consensus mechanism, data availability, virtual machine... you can freely choose combinations, just like building your own AppChain workshop. No longer limited by the architecture of a single main chain, it truly realizes the customization of chains and efficient collaboration.

In this process, $ERA serves as the "energy token" that starts and maintains the operation of this system—used for payments, incentives, governance, communication, and several other core aspects. Without it, the entire Rollup network cannot operate smoothly.