EIP-7732: Enshrined Proposer-Builder Separation (ePBS)

A major shift in how Ethereum blocks are proposed, validated, and built.

Let’s break down what this EIP 👇

What is EIP-7732?

This proposal revolutionizes Ethereum block validation by separating execution validation from consensus validation, both logically and temporally.

A builder role is added, and validators now have to confirm that builders submitted their promised data on time. The goal is to enhance efficiency and trust in the network.

What's mechanism?

EIP-7732 separates block validation into two parts:

• Consensus validation (by proposers)
• Execution validation (by builders)

Block validation now happens in two steps: proposers check network rules first, then builders provide and verify the full transaction data.

Why is this needed?

Today, most Ethereum validators outsource block construction to third-party builders via a trusted relay. This introduces risks as:

• Trust assumptions.
• Higher latency.
• Missed attestations.

How does it work?

Instead of including a full execution payload, proposers include a signed commitment from a builder.

Later, the builder must reveal the actual payload matching that commitment.

Proposers get paid if the builder behaves correctly, even if they don’t trust each other.

What’s this Payload Timeliness Committee?

A subset of validators now checks whether builders revealed their promised payloads on time.

They don’t need to check the payload’s validity, just that the right data showed up when expected.

This offloads critical work away from attestations.

Benefits of EIP-7732:

• Improved security.
• Greater efficiency and speed.
• Enhanced reliability.
• Better scalability.

Any changes to the Execution Layer?

Nope, this EIP is purely at the consensus level.

This proposal is a foundational step toward a modular Ethereum and it’s a reflection of network's commitment to long-term reliability and trustlessness.

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