Waiting 10 minutes for a transaction to appear in the block chain is so much more efficient than swiping a card and walking out the door
@bodskibod umm, if the transaction never ends up in the block chain it never happened
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@bascule if *valid* tx is recvd. by merchant from network there is nothing malicious customer can do to prevent it being mined into BC... -
@bodskibod so the customer should stand around until that happens? Seems like it would work better if the customer gave them a signed txn -
@bascule my experience typically 10 seconds or so to get txn from network, in UK many merchants dial-up card systems take longer than that -
@bascule but at end of day I am not ruling out clever tricks that exploit 'zero-confirm' merchants. Matter of pricing in best guess of risks
End of conversation
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@bascule ok so in that case, customer client can resend a new tx with *same* inputs (i.e. double spend against failed tx) in order to retryThanks. Twitter will use this to make your timeline better. UndoUndo
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