Proof of solvency protocols allow centralized exchanges (cex) to provide users with cryptographic guarantees of their solvency. It targets both cex and users alike, allowing the former to switch from "don't do evil" to "can't do evil" and the latter to ensure the actual inclusion of their deposits into the cex balance sheet.

Being not aware of any existing implementation of this protocol, we believe that a working example will help spur additional research in this space.