Gridcoin is a cryptocurrency that rewards scientific distributed computing effectuated via BOINC (that you can find at boinc.berkeley.edu).
This computing power is used to fight coronavirus (rosetta@home BOINC project), find elementary particles (LHC@home), compute asteroids' trajectory (asteroids@home) and so many scientific purposes, so it fixes the energy waste of bitcoin.
Blockchain Security Model
But crunching (the name for BOINC computing) doesn't secure blockchain, so it uses a PoS consensus that gives small rewards (crunching gives you additional rewards that are distributed when you finds a block).
The 1st version used scrypt PoW, but it was deprecated because it wasted energy.
If you doesn't have gridcoins to stake (or have bad uptime percentage for your node), you can crunch on grcpool that will give you the BOINC rewards (just add it as a project manager).
Official Websites and Resources
Official website : gridcoin.us
Grcpool : grcpool.com
Official discord : https://discord.gg/UKqjCts
A crunching screenshot
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