Ever since sites like Silk Road showed the dark side of anonymous Bitcoin transactions, governments have been trying to regulate the crypto-currency. But a group of coders — headed by 3D-printed gun creator Cody Wilson (above) — want to keep that genie out of the bottle with a new app called Dark Wallet. It was first launched on Indiegogo, where it met its $50,000 funding goal, thanks in part to Bitcoin donations.