IANAL so please don't construe this as legal advice. 

As many of you are aware, there has been increased scrutiny by the SEC around unregistered securities. After working with our legal counsel, this was one of the areas they raised as a red flag so we changed our policies around coin launches. The change to CHASH was requested directly by Bittrex to protect the coin and ourselves.

Developers are encouraged to discuss the legality of their coin with their own counsel.  If you have specific questions about our policy, please email me directly bill@bittrex.com.