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Project Management: Meeting notes and agenda items
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ePBS Breakout room #4 #1083

Closed potuz closed 1 day ago

potuz commented 2 weeks ago

Agenda

potuz commented 1 week ago

I would like to discuss the possibility of moving withdrawal processing to the execution payload entirely instead of a lock-fulfil mechanism where the withdrawal is deducted from the beacon chain when processing the CL block and then later is fulfilled in the EL when processing the execution payload.

potuz commented 1 week ago

Another issue to add to the agenda: with the current PTC threshold to achieve consensus at 50%, a malicious builder that wants to create a split view requires a single PTC member to equivocate in order to do so, perhaps raising the threshold to 66% is worth it to avoid this attack.

potuz commented 1 week ago

Another issue, setting the gas limit is done by the builder in the curren iteration. This needs to be set by the proposer. Perhaps the easiest way is to leave it off-procol for the builder API in the header request, and pass the gas limit in the header so that the proposer chooses the one that matches his request.

potuz commented 6 days ago

Yet another one if there's time: the current get_attesting_indices is a hack. Perhaps we want a cleaner way of dealing with attestations.

terencechain commented 6 days ago

Regarding the gas limit, I wonder if the current P2P specification needs modification. Assume the following setup: validator_a wants a gas limit of 30M, while validator_b wants a gas limit of 40M. The builder knows this disparity and broadcasts two individual bids, one for 40M and one for 30M. The bids need to hop through validator_a to get to validator_b.

If validator_a receives the 30M bid first, it will pass the 30M bid to validator_b and drop the 40M bid. Depending on who is proposing, either a or b will use the 30M bid, even though the b prefers the 40M bid.

If validator_a receives the 40M bid first, it will pass the 40M bid to validator_b and drop the 30M bid. Depending on who is proposing, a cannot propose with the 40M bid while b can.

terencechain commented 6 days ago

In the future, we might want to refer this as EIP-7732 break out

poojaranjan commented 4 days ago

Recording: https://youtu.be/WC9XsungamU

terencechain commented 1 day ago

Notes: https://hackmd.io/@ttsao/epbs-breakout3