I believe that I responded to that paper at least once. By my memory, the formalization of Bitcoin's security left room for a polynomial time attack on the sys

I believe that I responded to that paper at least once. By my memory, the formalization of Bitcoin's security left room for a polynomial time attack on the system. That is a fine restatement of what we already know about Bitcoin, but: 1. It is irrelevant to this thread, because I was only talking about Satoshi's paper. 2. It is not the sort of security people demand out of other cryptosystems. There is a reason nobody uses this: https://en.wikipedia.org/wiki/Merkle%27s_Puzzles https://en.wikipedia.org/wiki/Merkle%27s_Puzzles