Re: [Bitcoin-development] bitcoin taint & unilateral revocability (Re: ecash and revocability)

2013-05-14 Thread grarpamp
> Bitcoins relative lack of privacy creates a problem with tainted coins > risking becoming unspendable, or spendable only with some users, or at a > discount. So while the policy coded says all coins are equally acceptable, > the information exists so people can unilaterally reject them, dependin

Re: [Bitcoin-development] bitcoin taint & unilateral revocability (Re: ecash and revocability)

2013-05-14 Thread Simon Barber
Adam, Take a look at this privacy enhancing solution based on fair exchange implemented by bitcoin contracts and cut-and-choose. It would require a public pool of users willing to exchange in common denominations at moments in time together to ensure unlinkability. It also leave a trace of exc

[Bitcoin-development] bitcoin taint & unilateral revocability (Re: ecash and revocability)

2013-05-14 Thread Adam Back
On Tue, May 14, 2013 at 01:51:51PM +0200, Adam Back wrote: > Adam Back in Sep 1999, cypherpunks list: >>I wouldn't say ecash has to use blinding, but I would argue it would be a >>misuse of the word "ecash", if something which was revocable were dubbed >>ecash. So I still think that is an importan