Jorge, thanks for bitcoinx tip, I didn't know about it and it's certainly
related. I'll have a closer look
Regarding Ripple, I tried it but as far as I can tell, it doesn't have any
contract enforcement (by technical means) built in.


On 11 February 2013 05:03, Jorge Timón <jtimonmv@gmail.com> wrote:

> Hi, you may be interested in a couple of related projects.
>
> Colored coins uses satoshis to represent smart property, shares, IOUs
> of another currency...Colored coins can be atomically traded for
> bitcoin. If you implement the trade across chains contract they would
> also be tradeable for another chain currencies like namecoin or
> freicoin.
>
> http://www.bitcoinx.org/
>
> Ripple is a concept by which people that trust each other on a network
> are able to pay with IOUs transitively. It has a new p2p
> implementation  that is still on development. The new implementation
> is very similar to bitcoin in certain senses but it has no mining.
> Bitcoin IOUs can be traded there.
>
> https://ripple.com/
>
> Good luck with the implementation, this is a good feature to have,
> even if it's not on the main client.
>
>
> On 2/8/13, Petr Praus <petr@praus.net> wrote:
> > Hi,
> >
> > I intend to implement trading across chains in a P2P manner (as described
> > by Mike Hearn in
> > https://en.bitcoin.it/wiki/Contracts#Example_5:_Trading_across_chains).
> > Note, this is indended more as an alternative chain development, I don't
> > have any plans for merging it back into main client (not because I don't
> > want to, but because I think it wouldn't be accepted). Before I dive into
> > it, I thought it might be a good idea to ask here if the community has
> any
> > useful ideas or comments on this topic?
> >
> > Thanks to Gary Rowe I know about Open
> > Transactions<https://github.com/FellowTraveler/Open-Transactions>.
> > They can do "multicurrency trading" too, but it's objectives are quite
> > ambitious and I'm looking at making relatively small changes in the
> > mainline Bitcoin client rather than diving into something entirely new.
> >
> > A little background on why am I doing this, can be found
> > here<https://groups.google.com/d/topic/bitcoinj/lmVSF8yaJHk/discussion>.
> > In short it's part of research towards my Master's thesis (more
> precisely,
> > an excuse to hack on Bitcoin and sell it as research :)) which should be
> > about multicurrency (alternative chains) in Bitcoin.
> >
> > Thanks,
> > Petr
> >
> > PS: I hope I'm not too off topic here, but
> > this<https://bitcointalk.org/index.php?topic=15527.0> thread
> > indicates it should be fine to post alternative development questions on
> > this.
> >
>
>
> --
> Jorge Timón
>
> http://freico.in/
> http://archive.ripple-project.org/
>