How can I be safe to do business with a band outside of the USA?

Hi, I'm a new producer affiliated with SESAC and I recently got contacted by a new upcoming artist outside of the United States. He asked if I could make an instrumental track for him and two other members. All three want to rap on the track I make for them. So, I made a beat for him and sent it out to him. The whole band liked the track. They haven't paid me or anything because I was thinking of getting attribution for that track and I was thinking of featuring him on an album I plan on releasing in the future but I haven't mentioned it to him yet nor any of business related talk, just about music. Then he tells me he wants me to be the producer for the band because they'll be the only band in his country with an american producer and he wants me to make more tracks for him. So, what are the possible options for me to make money off the music I make for the band? Also, how can I be sure I am making a safe deal with them? This is all new to me and I'm confused, all answers will be much appreciated. Thanks!