TTAv
(Time Travel Attack Vector)
~
Let me Explain:
Say you have COIN1, that has been capped on performance untill now...
But NOW you can go BACK, and re-mine those first blocks at a lower 'performance cost', and still make them valid!
You could create a longer, valid, accepted chain than the one we have now...
(Time Travel Attack Vector)
~
Let me Explain:
Say you have COIN1, that has been capped on performance untill now...
But NOW you can go BACK, and re-mine those first blocks at a lower 'performance cost', and still make them valid!
You could create a longer, valid, accepted chain than the one we have now...
My goodness, is this straight out of a Time Heist mission?
Seriously though:
In BTC, how on earth are you going to remine those old blocks without mining everything else that came after it? You can't just reuse block hashes of later blocks because they include the hash of the block you want to replace.
And thus, though a combination of technology and selfish game theory, Bitcoin is secured from everyone who would like to alter past transactions.