join #bitcoin-otc on chat.freenode.net
type:
I don't remember the syntax, but you will need to tell Gribble [the bot] where your public key is located. Then do
and Gribble will respond with a challenge string for you to sign.
now clearsign the string:
echo ef86748c3dd336cb400ccb9ff25411135c72c714cdaca367ac6941c6106cbfe9 | gpg --clearsign
and upload it to pastebin, paste.pocoo.org, or similar. Next,
;;gpg verify http://paste.pocoo.org/raw/12345
and you will be good to go. Details at:
http://wiki.bitcoin-otc.com/wiki/GPG_authentication