DTCC is cumbersome process of getting FULL SELF CUSTODY OF REAL COMPANIES on NON-MARGIN CASH ACCOUNTS- So BROKER DEALER can HYPOTICATE ur HODLING
Wtf The Depository Trust Company is giving no value to collateral that includes bitcoin as an underlying asset.
You can find the pdf of the update on their website. https://www.dtcc.com
They are throwing the entire centralized kitchen sink at Bitcoin. 
Discussion
in real life 3% of user EVER USES IT OR BROKERS ALLOW IT
very high fees