protocol/platforms: project Greenlandian, archiving pre-Holocene blocks #213
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Big fan of this proposal.
fwiw - we do already have all pre-Holocene logic implemented over in kona, save for some of the in-progress work on the engine in the rollup node. So although giving the pre-holocene features a viking funeral would be super nice, not having this probably won't slow us down.
A blocker to this proposal might be the lack of universal support for the era1 format, though. iiuc, reth + op-reth doesn't support it. cc @mattsse
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Definitely makes sense and makes a lot of sense for an L2 given that deriving from L1 requires a separate archive anyway (due to blob expiry) so it makes a lot more sense for that archive to just be the result of derivation instead of the inputs.
I think we just need to flesh out the details of how we determine the correct block to use for bootstrapping - once the proofs incident response improvements are deployed, the AnchorStateRegistry would only update after the air-gap and would make a good reference but only provides a single value that will be at minimum 7 days old. It can be arbitrarily old (if there are no valid proposals) but it becomes challenging for fault proofs if it's more than 30 days old. In the worst case with an exorbitantly expensive DOS attack delaying games resolving it could be forced out to about 20 days old. That's probably still quite reasonable.
In terms of storing the era files, we will need to be careful they are being redundantly stored, particularly for smaller chains. It would be easy to wind up with only the chain operator storing the era files and accidentally losing them. That's not the end of the world but isn't ideal.
And if there's manual steps required to create the era files we need to think about how to manage that rollout, but it should just be writing up a runbook so not likely to be a blocker.
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L1 era-store archives, and some lesser known file formats, for state-snapshots: https://eth-clients.github.io/history-endpoints/ |
Description
Design-doc to start archiving L2 block data, to unblock the OP-Stack by removing pre-Holocene tech-debt.