All welcome friends! You plan to start selling electronic products over the crypt and other payment systems.
Binding courses for cryptocurrency is carried out through API of the two exchanges bitfinex and bitstamp, choosing the lowest. For the owner of the service needs to find and implement a solution manual add courses as a percentage. Example: the rate of BTC on bitfinex 3600$ on bitstamp 3650$, the system selects automatically the price on bitfinex and takes a -3% as it was established by the resource owner, receives 3492$
Yet found a service offering a turnkey solution https://bitcoinaverage.com
, are there alternatives?