Description

Here's how it works:

• Improving Transactions: The main aim is to handle more transactions quickly, enhancing the network's capacity.

• Decentralized Data Availability: Espresso focuses on ensuring that data needed for new transactions is easily accessible, balancing scalability without sacrificing decentralization.

• Unique Approach: It uniquely integrates ZK-Rollup directly with the consensus protocol, improving information flow and transactions without the typical limitations of other rollup solutions.

• User Transaction Submission: Users send transactions to a rollup server.

• Sequencer Node Involvement: The server forwards the transaction to a sequencer node, which includes it in a new block.

• Block Creation and Broadcast: The sequencer node then broadcasts this block to subscribers, including a rollup node.

• Execution and Proof Generation: The rollup node processes transactions and, for ZK rollups, generates a proof of correct execution.

• Layer 1 (L1) Interaction:

  • The rollup node sends the updated state to L1.
  • For ZK rollups, it includes a validity proof, while optimistic rollups allow for fraud proofs.
  • The L1 rollup contract verifies proofs and ensures the update matches the correct block.

In summary, Espresso provides a structured, efficient process for handling blockchain transactions. It focuses on scalability while maintaining the security and integrity of the system.