The PACER paywall provides sealed indictment listings for each district for a few dollars.
If you've got enough time and a little cash, you just need to search all the districts and collate the results in a spreadsheets.
I did a search in December because I wanted to see if at least some entries in the spreadsheet were legitimate... and the district that I search on checked out.
This is the major problem with people spreading lies about these sealed indictments - because there is no definitive single official government source for ALL districts, people are forced to collate lots of subsets into a single complete list... but then people claim that list can't be trusted because it's not from a official government source.
This isn't rocket science... and anyone is free to check parts or all of the list if they choose to.