Planned for Glamsterdam: moves the outsourcing of block building into the protocol itself.
Why it matters: Removes reliance on trusted middlemen called relays.
On the map: builder bids and payload-timeliness votes
Map note, rests on: BLS + honest PTC majority
Enshrined proposer-builder separation (EIP-7732)[1], the consensus headliner of Glamsterdam. Today block building is outsourced through trusted relays. ePBS moves it into the protocol: builders submit BLS-signed bids, proposers commit to one, and a payload-timeliness committee attests that the payload arrived on time.
It adds more BLS-signed messages to consensus, so it inherits BLS, and it adds the honest-committee assumption. It is live on the Sepolia testnet since October 6, 2026[2]. The mainnet date is not set.
If any of these breaks, this breaks too.
If this breaks, these break with it.
Nothing on the map depends on it: it is an end point of the roadmap.