That's most likely from donations in Bitcoin. The PACs actually want real-world dollars, so sell any cryptocurrency recieved immediately. i that case, there's

That's most likely from donations in Bitcoin. The PACs actually want real-world dollars, so sell any cryptocurrency recieved immediately. i that case, there's an entry for the "x.yyyzzz bitcoins were donated" part, and then one for "we sold x.yyyzzz via Coinbase for $n dollars". Overall, that translates to "we received $n dollars from $blah in the form of x.yyyzzz bitcoins", which presumably keeps the regulators happy.