Usually financial institutions prepare their financial statements once a year.
For a regulator, this is an important input for its controlling job.
But things could be easier if everyone take a look to a BTC address. This is also good for a regulator.
If blockchain adds transparency, why not to use it to know the amount of BTC/crypto that would be managed by a financial institution?
The same goes for the exchangers.
This post was inspired in this blog
What do you think?