Hi,
Thank you for inviting me to your project. I have read the description but I'm not sure if I understand full requirements. Do you have a solution proposal or technical description for this? Or at least a simple list of features or "real life" example? I think I'm still in top10 freelancers regarding Bitcoin on freelancer.com and I'm sure I can do this. I work in an international software company as Senior software engineer and I own a small company for projects like this. Please send me the requested info so we can continue the discussion.
p.s. Since I see you are new here, a little advice. You don't need to hire me, but skip offers from India and China or you will just lose money.
Thanks,
Ivan R.