"GRAFT payment processing network functions similarly to a credit card processing network with off-chain authorizations and in-network atomic swap based interchanges. The network is completely decentralized, able to work cross borders and adapting to local regulatory environment. In addition to decentralization, GRAFT solves four biggest problems that exist in cryptocurrency at a point-of-sale today – privacy, speed, fees, and integration." from GRAFT website: https://www.graft.network/
Today's main market pair GRFT/BTC on TradeOgre exchange : https://tradeogre.com/exchange/BTC-GRFT