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MEV, order flow & block production

What is Proposer-Builder Separation (PBS)?

Proposer-builder separation (PBS) divides block construction from block proposal. Specialized builders assemble candidate transaction payloads, while proposers select and propose a candidate under the network's rules, allowing the two roles to operate with different infrastructure.

By BlockRazor Updated

How does Proposer-Builder Separation (PBS) work?

Builders compete to supply payloads and proposers choose among eligible offers. Implementations may rely on external relays or protocol-level mechanisms.

What should trading bot developers know about Proposer-Builder Separation (PBS)?

PBS is an architectural concept, not one universal API. Ethereum's external MEV-Boost system and proposed in-protocol designs have different trust and availability assumptions.

Sources & further reading

Definitions are editorial summaries of the sources below. Protocol behavior and provider policies can change; consult the linked documentation for implementation details.