Adam Back: Two Bitcoin interviews (back-to-back)
Crypto Voices
00:00
Is There a Hash Collision?
A hash function needs to be hard to steer to avoid collisions. So for proof of work, I figured you probably don't want that because it could end up using memory or be less efficient than brute force. There are ways to calculate these without using memory, like cycle finding algorithms which use a clever trick. But anyway, the way I did it was to restrict one of the inputs and later Hal Finney, whose name comes up a couple of times in a Bitcoin space, came up with this idea.
Transcript
Play full episode
