Diddy NFT Listing Claims to Have Private Footage, Going to Highest Bidder

Diddy's alleged after-hours exploits are set to be unearthed -- that is, if a new listing hyping up supposed BTS videos of him is to be believed, and more importantly ... purchased. Here's the deal ... TMZ has been made aware of a listing on a crypto exchange site that went up by a person who purports to be in possession of a lot of Diddy footage over the years ... much of which, they claim, features him in some…