First saw the ability to zap from a track nostr:npub186k25a5rymtae6q0dmsh4ksen04706eurfst8xc5uzjchwkxdljqe59hv0 shared. Not came across them before. nostr:npub1yfg0d955c2jrj2080ew7pa4xrtj7x7s7umt28wh0zurwmxgpyj9shwv6vg looks very interesting!