I contributed hash to it for a few months in 2017 or 2018 in order to put my mind at ease that Bitcoin private key system is secure as I understand it to be
During my time of participation, I was using 3 AWS large instance, 16 and 32 CPU's, this is from memory but I believe in aggregate my throughput was around 600 Million private keys per second processed
It was at the height of the LBC project's popularity due to that article. Very controversial project on r/Bitcoin due to the possible theft of bitcoins
I believe at that time, LBC was processing over a trillion private keys per day