A trivial form of PBS: MEV Lock

[potuz]

@aelowsson

Note that 0x03 validators will still need to sell the right to build the blocks rather often, because the builder able to extract the most MEV from the block won’t always be selected (albeit this will then be done out-of-protocol).

I do not see this as a problem, or rather it is secondary to the design. If 0x03 validators want to resell their rights off protocol that may even make for a healthier market. The point is that the protocol will have already had collected MEV rewards that today are impossible to collect (and the proposers are getting them). So since I am being asked this elsewhere I want to spell this out:

• CL proposers will not get anything anymore from MEV.
• Builders will not need to bid at all, no need to pay nor divert any priority fees to any proposer.
• The protocol will regularly charge a rent to 0x03 validators. So not only these validators will not accrue staking rewards, but rather they will be burning their principal.

This way the protocol gets to collect part of the MEV that is today collected by proposers. Reselling JIT will need to at least offset this rent.