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A comment on Bitcoin Vending Machine. Parent comment

Re:Bitcoin Vending Machine by HostFat on Monday July 16, 2012 @10:50AM (#4250923)
You can instant accept any bitcoin value that is lower to the investment to do the 51% attack or similar. Example: no one is going to make a 51% attack to steal only 10 bitcoin from a vending machine.

Simply put a limit, or just say to the user that any amount of bitcoin over X will need Y time to get verified. Anything lower that X amount will be instantly processed.

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Re:Bitcoin Vending Machine by fryguy on Monday July 16, 2012 @04:39PM (#4252525)
Doesn't it require ~10 minutes to solidify into the record to prevent double-spending without having the 51% attack?
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Re:Bitcoin Vending Machine by elliottcarlson on Monday July 16, 2012 @05:27PM (#4252777)
Correct - there are various attack vectors besides the 51% attack. Ideally, a transaction shouldn't be closed until there have been 2 confirmations.
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