Also: It's unclear where to draw the lines for API/RPC. The previous draft had Stratum (which is being removed here since there sadly isn't a BIP yet) as Applications and GBT as API/RPC, when both protocols serve the same fundamental purpose.
Need to get this cleaned up to move forward on both it as well as BIP 2... @CodeShark
@luke-jr I'd say Applications layer defines things like data structures and formatting. While a reference implementation is nice, it's up to application developers to implement it as they wish. On the other hand, the API/RPC layer defines calls that must be implemented either as a library or as a service.
Ok, that sounds about right (but didn't match the layer assigned to stratum). Does this PR look good to merge then?
ACK