Scroll is an EVM-equivalent zkRollup to scale Ethereum. Technically speaking, Scroll is built upon two major pieces. The core piece is the zkEVM, which is used to prove the correctness of EVM execution in Layer 2.

The current architecture consists of three infrastructure components:

• Scroll Node: Constructs L2 blocks from user transactions, commits them to the Ethereum base layer, and passes messages between L1 and L2.
• Roller Network: Generates the zkEVM validity proofs to prove that transactions are executed correctly.
• Rollup and Bridge Contracts: Provides data availability for Scroll transactions, verifies zkEVM validity proofs, and allows users to move assets between Ethereum and Scroll.