Reviewers satisfied with BitBetWin most frequently mention customer service, different platforms, and online casino. Here's a breakdown of the welcome bonus. Reviewers satisfied with BitBetWin most frequently mention customer service, different platforms, and online casino. . 1xBIT is home to the very best casino games and endless betting opportunities. Join 1xBIT today to experience all crypto betting has to offer. Here's a breakdown of the welcome bonus.