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May 10, 2012 at 10:40 comment added MaxSan As im aware there are checkpoints in place also? Maybe someone can add some information regarding these as they are somewhhat relevant.
May 10, 2012 at 10:40 history edited MaxSan CC BY-SA 3.0
deleted 124 characters in body
May 8, 2012 at 14:08 comment added Stéphane Gimenez As David Schwartz mentioned your second paragraph is purely made up. I know, it probably comes from bitcoin.stackexchange.com/a/660/132, but the author of this answer (which surprisingly has a positive score) don't understand what he say and recognize it himself in the comments. Please replace your second paragraph by “With 51% of the network hash power, it is really easy to reverse transactions.”
Sep 7, 2011 at 7:56 comment added MaxSan It is hard considering you must keep over 51% and the fact not even most governments dont have access to that level of power.
Sep 6, 2011 at 21:32 comment added David Schwartz With 51% you can undo any transaction you wish. It's not difficult at all, you simply create your own chain with a conflicting transaction and wait until your chain is longer.
Sep 3, 2011 at 10:21 comment added Peter You could do it with less that 50% if you got lucky.
Aug 31, 2011 at 18:57 history answered MaxSan CC BY-SA 3.0