The phrase "old wallet.dat hot" refers to the high-stakes process of locating, recovering, and reactivating legacy Bitcoin data files—often from the 2009–2012 era—to trade them on modern, active exchanges (making them "hot"). For many early adopters, these files are digital "treasure maps".
A "hot" wallet.dat refers to a file that is actively loaded or, more commonly in recovery circles, a file that has been verified to contain a balance on the Bitcoin blockchain . 2. Locating the File on Your System old walletdat hot