Do multi-signature transactions make a ‘bitcoin kickstarter’ possible? And what state are the bitcoins in, in the meantime?

By utunga

This isn’t a question about kickstarter really, just a way for me to phrase my question about the crypto in terms that I can understand.

My understanding, based on this article.. Stop Saying Bitcoin Transactions Aren’t Reversible is that multi-signature transactions would make something like a bitcoin KickStarter particularly easy.

That is the kickstarter-like bitcoin service would act as a third party to many contracts transferring btc to the second party?

Maybe this has already been done? Hmm @coinstarter.. Yay! Great to see but doesn’t really answer my question about how the crypto works.

To make things easier I’ll call the people that pledge to the campaign the ‘first parties’ and the recipients of the funds the ‘second party’. Could multi-party signatures to ensure the second party only receives btc after the projects are funded? and at the same time be sure that the third party (eg coinstarter) technically can’t abscond with the funds.

Also – and this is my real question – in such a case what state are the bitcoins in prior to the project being funded. That is, are they effectively marked in the blockchain and thus effectively impossible to ‘double spend’ btc they have pledged to a campaign or are they effectively not in escrow so if they spend them on something else in the meantime the transaction just fails?

Thanks so much in advance, hope this question makes sense, crypto wise.

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