Am Donnerstag, 3. Januar 2013, 16:31:40 schrieb Matthew Toseland: > The problem is hashcash is very expensive for regular users (who may have > slow CPUs) and very cheap for attackers (who have fast GPUs). So it's not > really a usable solution.
That’s just what I thought: We can make it more expensive to run a node, so we can set a minimum cost for impersonating one user. That can avoid some attacks, whete the attackers need 10 times the number of real nodes. But it can not avoid attacks which just require 10% of the nodes to be malicious. Best wishes, Arne
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