Might want to read who the DTCC is responsible to, it is not issuers or shareholders. They owe neither an answer as to why the stock has been chilled, in fact if the issuers would pull their heads out they would contact the right people to get the answers they are looking for. The DTCC corresponds with broker dealers and those sponsoring issuers, you know since the sponsor has conducted DD and found the issuer to meet the standards. But what I find really interesting is the expectation that a business must accept stacks of unregistered certs that they get stuck with as the middle guy. Talk about an unrealistic expectation not to mention misdirected frustration, the real culprit is the issuers and the TA.
The TA just stamps anything that comes through without an ounce of DD or care, thus just flooding the market with these unregistered shares. If the TAs did their job and the issuers actually played by the rules there would not be these issues.