That is nothing new sorry (I commend you for coming up with it on your own though). It has been a long standing contingency since the inception of bitcoin that allows you to do exactly that.
The idea is that if a SHA256 vulnerability if found (doubtful) or quantum computers or even super intelligent aliens arrive that can hash in their head breaking bitcoin security, we can just swap out the engine and keep going. Litecoin is an example of an engine swap (SCRYPT) among other things.
Neil
If a SHA256 vulnerability is found the coming months years , I doubt bitcoin will be our biggest problem.
True !
I came here to say this, but it was already said.. Although I'm going to say it anyway because I'm so badass..
If a SHA256 vulnerability is found, I highly doubt that Bitcoin will be our biggest problem.