[evanevan]

Hi, I'm one of the founders of Coda -

In Coda we use zero knowledge proofs to stand in for downloading / checking the blockchain. This means you get the identical computation to normal blockchain syncing, but in only the size of the zero knowledge proof and your account, which ends up being both constant and ~20kb. Which makes a big difference if you want to use Coda from a phone or browser.

Check out this video if you want to understand more of the tech behind it: https://www.youtube.com/watch?v=eWVGATxEB6M

And feel free to ask any other questions as well!

[throwaway415415]

Whats the difference with vault?

[evanevan]

Biggest difference is Coda's constant 20kb vs still at least a few hundred megabytes for Vault. This matters because it helps in making cryptocurrency and cryptocurrency apps usable by people from their phones and browsers, at 20kb with Coda that's actually possible.

I haven't looked particularly into if any consensus / security assumptions are different either with Vault, but that could be another place for them to get down to a few hundred MBs without zero knowledge proofs.