Post
Topic
Board Development & Technical Discussion
Re: The Easy Attack - What am I missing?
by
jl2012
on 01/08/2015, 18:43:55 UTC

Another thought occured: what if Eve changes her input to 1000 (of account A) and then send that 1000 to B. But this (https://en.bitcoin.it/wiki/Protocol_rules#.22block.22_messages) reads it becomes an orphan transaction, because there is no corresponding 'out' for Eve's 'input'.

This tx is obviously invalid, as the reason you mentioned. Except the 25BTC reward for each block, any attempt to generate bitcoin out of thin air is invalid.

A block containing any invalid tx is simply invalid. Miners mining invalid blocks are just wasting time and energy.