[Cryptography] Proposal of a fair contract signing protocol

[Allen]

>
> In step 1 Alice is bound to
> something but Bob to nothing. But that doesn't matter "at all" to
> my definition of fairness...


In that case, your definition of fairness looks like it has no
usefulness--I can't see any application that would benefit from it, nor can
I see anyone who would be interested in using it.
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