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Re:Electronic Lottery Tickets as Micropayments (‎1997) by kobeya on Wednesday November 15, 2017 @02:26AM (#15702057)
No need for a future block. Recipient commits to the hash of a value. Payer signs a value. Hash the preimage (revealed in claim) and the signed value together. If less than a threshold, pass.
Re:Electronic Lottery Tickets as Micropayments (‎1997) by infogulch on Wednesday November 15, 2017 @02:39AM (#15702095)
As long as neither party has any way to manipulate the hash. Should probably add a 0th step where the payer commits to use a specific signature.
Re:Electronic Lottery Tickets as Micropayments (‎1997) by kobeya on Wednesday November 15, 2017 @05:37AM (#15702815)
The signature doesn't matter. Allowing the payer to change it only increases (potentially) the odds of them having to pay, which they won't do. In some constructions--in others it has no effect.
Re:Electronic Lottery Tickets as Micropayments (‎1997) by infogulch on Wednesday November 15, 2017 @11:49AM (#15705158)
Ok it looks better after looking at it again. Thanks.