Zero Knowledge proofs take the place of a digital signature proving ownership of an address in Bitcoin. Well, that's explain like you're a crypto undergrad. Bu

Zero Knowledge proofs take the place of a digital signature proving ownership of an address in Bitcoin. Well, that's explain like you're a crypto undergrad. But, it's a start. There's quite a lot of interesting cryptography and engineering involved in making this work; the last zerocash presentation I saw in 2014 mentioned they had been working on shrinking ZK proofs from 25k down to a manageable size for a blockchain.