Do Full Nodes validate all transactions after all bitcoin are mined?
A fork of bitcoin core with all coins pre mined would be behaving in this way too I'd imagine..?
Also, would these nodes still create blocks of transactions, if so, why dont full nodes do this now? Is mining only a safety mechanism for a permissionless network?
See this quote at the link below:
Blockchain Validation vs Blockchain Consensus
It’s important to note that “validation” and “consensus” aren’t the same thing. A Blockchain Validator performs validation by verifying that transactions are legal (not malicious, double spends etc).
However, Consensus involves determining the ordering of events in the blockchain — and coming to agreement on that order.
Essentially, Consensus involves agreeing on the ordering of validated transactions.
The validation precedes the Consensus. We may very well have something that is “valid” that the network does not “agree” upon.