I'm not sure if this is supposed to work as is, but I try to issue the NatCert credential (with the updated context) locally I receive this error:
Unable to generate/issue credential: Unable to issue credential on selected backend: Dereferencing a URL did not result in a valid JSON-LD object. Possible causes are an inaccessible URL perhaps due to a same-origin policy (ensure the server uses CORS if you are using client-side JavaScript), too many redirects, a non-JSON response, or more than one HTTP Link Header was provided for a remote context.
Is this to be expected @davidlehn @BigBlueHat @wes-smith ?
@tminard is actually handling that issuer update.