Before taking people who don't have any specific experience with this at face value I highly recommend emailing the embassy directly about it.
It depends on where you are applying for as to their flexibility on a host of rules. I have read here with some saying their crypto was accepted as cash equivalent and this particular poster said that they were approved as a portfolio manager specifically relating to interactive brokers showing the value of his holdings in that account to the embassy in Germany.
In other words don't listen to people who are talking out of their 🫏