mAPI (initially Merchant API) was designed to be an additional service miner that could be offered to merchants accepting Bitcoin...
There are the important things that we really need to be asking to take the next big steps up. There...
Think of a nano-payment similarly to how you might think of OP_Return data: something going along for the ride.
nChain developer Jad Wahab recently gave a talk at the inaugural Bitcoin SV DevCon 2020 on the benefits of Merchant...
Calling WhatsOnChain's M/API gives merchants fee quotes for specific transaction processors.