As TikTok faces down an April 5 deadline, last-minute offers to buy the app have come from Amazon and the founder of OnlyFans, among others.

A startup run by Tim Stokely, founder of adult content social media site OnlyFans, has partnered with a cryptocurrency foundation to submit a late-stage plan to acquire TikTok.

As the deadline nears for TikTok’s Chinese parent to cut a deal to divest controlling ownership of the app or face a U.S. ban ...