There has been a veritable explosion in the use of initial coin offerings (abbreviated ICO, sometimes also referred to as a token generating event or TGE, or a WTFLOL) to fund startups. Calculating the total investment in these offerings is complicated, but Coindesk puts the total right now at about $3.8 billion cumulatively, with the bulk invested in 2017.
That total volume pales in comparison to overall venture funding, which was approximately $41 billion last year and has hit highs of as much as $60 billion. But it is much more in line with early-stage VC funding, with some analysts suggesting that total ICO volume is now higher than angel and seed financing.