Introduction

Getting started building blocks on Signet

Welcome to Signet's Block Builder Docs. This documentation will help you understand how to build blocks, capture value, and participate in our unique ecosystem. For more general information about Signet, see our public docs.

Key Features for Builders

• Capture MEV and Sequencer Fees: Directly extract value from transactions within your blocks.

• Fair Block Production: Round-robin sequencing ensures equitable opportunities for all builders.

Your Role as a Block Builder

As a Signet Block Builder, your primary role is to construct blocks by selecting transactions and bundles to build into blocks, and submitting those blocks to Ethereum. Signet doesn't use PBS auctions - instead, you'll work with our sequencer to produce blocks. The sequencer will assign you slots. Bundle access and sequencer co-signing are available only during your slot. See Authentication for more details.

Builder Lifecycle

Your process as a Block Builder involves:

1. Collecting user transactions. See Getting Transactions and Bundles for a Block.

2. Simulating bundles and creating blocks. See Simulating Signet Bundles.

3. Getting a co-signature from the Signet Sequencer. See Getting a Sequencer Signature.

4. Submitting blocks to Ethereum via EIP-4844 Blob transactions. See Submitting a block to Ethereum.