Re: What are the odds we'll find a collision by the time the last bitcoin gets mined?
The probability of any specific address is 1 in 2^160 or 1.4x10^48 right?
It's ~6.84x10-49. Did you put "1 in 2^160" in Wolfram Alpha?
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So the more addresses you have out there the higher the chance of a collision right (birthday problem?)
Yes. It is a birthday problem.