Scroll is really an EVM-equal ZK-rollup meant to become a scaling solution for Ethereum. It achieves this by interpreting EVM bytecode instantly on the bytecode stage, adhering to a path comparable to that taken by projects like Polygon's zkEVM and copyright' Linea. It is a permissionless bridge deployed on L1. https://jeffreyiapdr.rimmablog.com/30427910/the-smart-trick-of-scrollbridge-that-no-one-is-discussing