AFAIK you don't need much computing power, you just need to be lucky to be the first one to solve the problem and create a new hash. I case you have lot's of tr

AFAIK you don't need much computing power, you just need to be lucky to be the first one to solve the problem and create a new hash. I case you have lot's of tries even a 0.05% chance every 10 minutes might be enough. Not sure if i make a mistake here, but it seems to be easy. 0,5 < (n choose 1) * (1-0.0005)^n 0,5 < 1 * (1-0.0005)^n log(0,5)/log(1-0.0005) < n 1385.95 < n 13860 minutes < 10 days So a 50% chance in 10 days. If you have a 0.05% of the computing power of the whole network.