It was new to me as well. My wife saw it when the Hulls announced it on FB. I went to look at an event just to see what the dealio was. I didn’t “play” the concert, just went to the home page. It didn’t require a membership. There is a tip button. I have no idea how it works or if it’s safe. With that said, there are some big names (and the Hulls were promoting it), so I am guessing it is more likely legit and safe than not.