Firstly, welcome
There is actually an example for Riecoin mining:
https://github.com/parallella/parallell ... coin-minerObviously with Bitcoin the only viable approach has been to use ASICs for some time now. Not sure about others...
Some OpenCL applications may work with only minor modifications. E.g. see the Vector addition with R via OpenCL example:
https://github.com/parallella/parallell ... r/r-openclHowever, others may require a lot more work, since the Epiphany architecture is very different to that of a GPU.
Regards,
Andrew