Gridcoin : is an electronic coin This coin is concerned with the Mining of currency against scientific research.
White Paper: https://gridcoin.us/assets/img/whitepaper.pdf
Facebook : https://www.facebook.com/gridcoins
Reddit : https://www.reddit.com/r/gridcoin
Telegram : https://t.me/gridcoin
Tumblr : https://gridcoin.tumblr.com