What Is A Proposer Commitment Network

Interstate preconfirmation network allows users to receive a transaction confirmation in ~100 milliseconds rather than waiting 12 seconds for an Ethereum block

A Layer 2 can be considered an off-chain proposer commitment network. Where a centralized L2 sequencer stores the chains state, and then on a delay (within 7 days for optimistic rollups) writes the state of the L2 rollup into the L1 state.

We are an on-chain proposer commitment network, meaning L1 validators/proposers make a statement about the contents they will include in a current or future block. While an optimistic rollup takes several days to include the contents of their commitments to the L1, a proposer commitment network typically takes a few seconds to fulfill its commitment.

The most obvious use case of a proposer commitment network is a 'preconfirmation' or a commitment to include a transaction in a future block, however a proposer commitment network is a general purpose dual use sequencer network, which supports all functionality of an existing L2 and exceeds it.

Lifecycle of a Preconfer

Ethereum is single leader proposer, with a new proposer elected every 12 seconds. The proposer outsources block building to an external relay, where professional searchers compete to order blocks in the most profitable way, extract MEV and bribe the proposer to include the most profitable block. In the case the proposer validator fails to include the transaction due to validator misconduct, they will be slashed and the funds will be used to compensate the preconfer requester.