Yes, https://freedom-to-tinker.com/2015/10/26/provisions-how-bitcoin-exchanges-can-prove-their-solvency/ https://freedom-to-tinker.com/2015/10/26/provisions-how

Yes, https://freedom-to-tinker.com/2015/10/26/provisions-how-bitcoin-exchanges-can-prove-their-solvency/ https://freedom-to-tinker.com/2015/10/26/provisions-how-bitc... (cryptocurrencies in general, I believe)