I wish I was a dev to fully understand the implications of this platform but in what I've read, the OPEN platform is going to be free for devs to use and they've only got to add a few lines of code for in-app purchases to accept crypto. I didn't see anything that excludes BTC but this project is an Etherium-based project.  Definitely check out the whitepapers if you haven't already. http://go.openmoney.digital/wp