On Saturday, June 20, 2015 1:23:03 AM Aaron Voisine wrote: > They don't need to be made cryptographically safe, they just have to be > safer than, for instance, credit card payments that can be charged back. As > long as it's reasonably good in practice, that's fine.
They never will be. You can get a decent rate of success merely by making one transaction propagate fast (eg, 1 input, 1 output) and the other slow (eg, 1000 inputs, 1000 outputs) and choosing your peers carefully. The only reason unconfirmed transactions aren't double spent today is because nobody is seriously *trying*. Luke ------------------------------------------------------------------------------ _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
