Most Influential in Blockchain 2017 #7: Pieter Wuille

Speak softly and carry a big SegWit? If bitcoin saw its biggest and most controversial change this summer, the evolution can all be traced back to one developer. Still, the founder of the controversial startup Blockstream and the network's most prodigious coder, Pieter Wuille, is a bit of a mystery. In an industry with no shortage of egos and bluster, though, Wuille is a rarity, choosing to let his code do the talking for him.