Watch CNBC's 'Bitcoin Uprising'

The Monday night meetings at New York City's Bitcoin Center hardly seem the stuff of a revolution.

Wielding smartphones and computers, the mostly male, mostly under-30 revolutionaries stand in the middle of a cavernous space in the shadow of the New York Stock Exchange. Their mission is to spread the gospel of bitcoin, which they believe has the power to upend the global financial system.

For more on bitcoin, click here.