Block Quote: 823760

'The proof-of-work is a Hashcash style SHA-256 collision finding. It's a memoryless process where you do millions of hashes a second, with a small chance of finding one each time. The 3 or 4 fastest nodes' dominance would only be proportional to their share of the total CPU proof-of-worker. Anyone's chance of finding a solution at any time is proportional to their CPU proof-of-worker.' November 17, 2008 - Satoshi Nakamoto