Not exactly, they could reverse transactions but if they fabricated transactions from thin air other nodes (including exchanges) would not honor them.
I agree with your second point though, the value would tank if this happened because the security of the coins is important to their value.
Not exactly, they could reverse transactions but if they fabricated transactions from thin air other nodes (including exchanges) would not honor them.
I agree with your second point though, the value would tank if this happened because the security of the coins is important to their value.