I understand that Ethereum PoS will have validators that proposes blocks (instead of miners that mines blocks).
IN all the description I am reading I am also coming across something called crosslink, which I do not understand at the moment.
What exactly are cross links? how do they fit into the contents of the blocks minded by validator? Are they related to shards? if so, does that means no crosslinks until sharding is added to ethereum? Thanks.
Best Answer
Try this
Crosslinks are basically pointers to shards from the main chain. When a successful shard block is to be added, a crosslink is created from the chain and only then the block can be part of the canonical history of the chain.