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In the case that two people agree that they would accept the result of a coin flip to resolve some dispute.

Is there a virtual heads or tails flip of a coin system that could be done online by two people, preferably with email notifications of the result for both participants.

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closed as off-topic by Al E., pnuts, jonsca Oct 11 '14 at 6:50

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Application/website recommendations are off-topic and out of scope. It is better instead to use a particular web app or website and ask for help in any issues you have with it specifically." – Al E., pnuts, jonsca
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up vote 1 down vote accepted

Two choices come to mind:

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I like this answer from Quora:

Currently, the way I've been doing it is by generating two MD5 checksums of "heads+" and "tails+" and giving the two checksums to the other person. They pick one and then I disclose both phrases so they can verify which side was chosen.

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