Protocol Labs raised $52M in token presale from Winklevosses, USV, others for Filecoin blockchain storage network, before opening ICO to accredited investors Yuliya Chernova / Wall Street Journal : Wall Street Journal 2017-08-06 Yuliya Chernova Protocol Labs, USV, Wall Street Journal, Winklevosses, Yuliya Chernova, Filecoin blockchain Related Coverage View article Token Economy View article CoinDesk View article CoinDesk View article International Business Times