This is a generic casino sound rather than a clip from one specific game or film, which is why it appears in so many different contexts online. Slot machines have used bells, chimes and coin noises for decades to signal a payout, and that audio shorthand carried over into video games, streams and short-form videos. Creators reuse it because audiences instantly read it as winning, luck or a sudden reward, even without any casino visuals. That instant recognition keeps it popular for edits that need a fast, positive payoff.