Bitcoin has seen a surge in popularity, in part due to the crypto being seen as having potential 'mainstream' use in the corporate world.While TSLA made headlines with its Bitcoin purchase and acceptance of it as a direct payment, many retailers have been indirectly accepting crypto for years.Following CMG, more companies could hop on the bandwagon and use crypto as a promotional and marketing vessel to drive engagement higher.Bitcoin-led promotions could provide high levels of engagement in short periods of time at a low cost.