Supernode: Finalized Label SuperAuthorization #19188
Description
Following from:
Now, when the CL attempts to mark some block finalized by its rules, we must also block it by additional rules:
The node will appear with an L2/L1 block to finalize, and we will need to make sure that verification is complete considerate of that L1. What this means is:
- Every Verification Activity stores a notion of the latest L2 timestamp it verified, the L2 heads, and importantly - The L1 block used to do so
- When finalization would occur in the Virtual Node, the SuperAuthority can be consulted
CanFinalize? - Chain Container can satisfy that query by consulting the Verifications and ensuring that the L2 block is correct, and the L1 block is known to be in the verified range for all Verifiers
Like other authority signals, a simple approve/deny is returned, and the node simply does not finalize data which it is not permitted to.