Epoch Transition
Definition of epoch transition in UniRep
Last updated
Definition of epoch transition in UniRep
Last updated
Epoch transition happens when someone calls beginEpochTransition() and the current block is epochLength blocks more since last transitioned block.
In beginEpochTransition()
An EpochEnded event is emitted and currentEpoch increases by 1.
After the EpochEnded event is emitted, all epoch keys attested during this epoch will have their hash chain sealed
by sealed it means that the hash chain is hashed again with 1, e.g.,
hash(1, originalHashChain)
if an epoch key received no attestation, it's hash chain would be hash(1, 0)
After hash chain of the epoch keys are sealed, these epoch keys and their hash chain will be inserted into the epoch tree of this epoch
there's only one epoch tree for every epoch.
There will be a new global state tree for each epoch.
And after epoch transition, user needs to perform user state transition to transition his user state into the latest epoch
currentEpoch is increased by one.
