Both Crunchers have been active inside BOINC for a long time, as a view of their personal stats and Projects History will show.
What they both did, as have many other Folk, is switch to crunching with Bitcoin Utopia. The latter needs very focused hardware that operates in a different way to General Useage CPUs (ARM Processors), that work on cards inserted into standard PCs. You can also buy dedicated Machines that devote its every "Bit and Byte" to search for BitCoin.
That result's is crunching through problems and "BOINC Points" like there is no tomorrow. Its all perfectly legitimate, and based on the frenzy to find BitCoin in the system.
The main Bitcoin page is at
http://www.bitcoinutopia.net/bitcoinutopia/
Dont get sucked into Bitcoin until you have - really, really - done your homework on it. The basis of it is legitimate as a form of Global Monetary System, but its getting harder and harder to "solve" the problems they crunch and "find" the Bitcoin. A big difficulty change happened last year, and it is due to get harder after a change later this year.
There was a time when you could do this search for Bitcoin just with a PC with some success (up to around 2012), however now, by design, its so hard to find the Bitcoin, its needs collaborative clubs banding together to have any chance of success. View it as a bit of fun if you get caught into it, but dont view it as an income source, you will fail in the latter with just a PC in the medium term.
If you want to learn more about Bitcoin, use the search "bitcoin history" in Google, then follow your nose ...... be prepared for a "Steep Learning Curve", because its basis extends Decades and Centuries into the future, not days and years; going deep into an alternative methodology for Global Finance.
A good overview is at:
https://en.wikipedia.org/wiki/History_of_Bitcoin