Works, minimally, is viable, but will be smoother within a day.

src/gmc_grids.erl

@@ -34,13 +34,6 @@
 %%%     "http", omitting the "/1/d" path component and then recnstructing the URL.
 %%%     This provides a lightweight method for services to enable contract calls from
 %%%     wallets that are not capable of compiling contract source.
-%%%   "v": Verify
-%%%     Similar to the contract call signature request above, this requests a message
-%%%     signature over arbitrary data. The normal use case for this action is public
-%%%     key based identity verification by signing time-stamped, random data. This verb
-%%%     is required because message signature requests are specially salted to prevent
-%%%     a situation where sneaky types might request signature of contract call data,
-%%%     but present it as a random message signature.
 %%% @end
 
 -module(gmc_grids).