On Wed, May 22, 2019 at 5:01 PM Russell O'Connor <roconnor@blockstream.io>
wrote:

> In concert, these two operations enable:
>
> * Oracle signature verification, including discrete log contracts.
>

Jonas informs me that I've misunderstood how discreet log contracts work.
The DLC signatures are not directly checked by Script and do not rely on
CHECKSIGFROMSTACK.  I apologize for my hasty literature review.