18 leading digits, a new record. I actually found this several months ago but didn't notice, lol.
-----BEGIN BITCOIN SIGNED MESSAGE-----
2017-01-16 controlled by ryanc
-----BEGIN SIGNATURE-----
144187999121393192DxViqQKPPrghj9M3
H1t3t0ZE+/QayD0S7/2RfMUvz9Qsh/9cFW8obuc4K3VDTkTJF+30ZRcW97TrdW3iNfEonx8BfqiSrfYAcYIIeDU=
-----END BITCOIN SIGNED MESSAGE-----
-----BEGIN BITCOIN SIGNED MESSAGE-----
2017-01-16 controlled by ryanc
-----BEGIN SIGNATURE-----
144187999121393192DxViqQKPPrghj9M3
H1t3t0ZE+/QayD0S7/2RfMUvz9Qsh/9cFW8obuc4K3VDTkTJF+30ZRcW97TrdW3iNfEonx8BfqiSrfYAcYIIeDU=
-----END BITCOIN SIGNED MESSAGE-----
Awesome!
hmm.. when I try to verify that signature I get "failure: incorrect padding" I tried messing around with some of the end characters (is that the padding?) but couldn't get it to verify.. is this person an imposter trying to steal all the glory from the true owner of 144187999121393192DxViqQKPPrghj9M3?
I await further verification 
Look here: http://www.coinig.com/?adr=144187999121393192DxViqQKPPrghj9M3&msg=2017-01-16+controlled+by+ryanc&sig=H1t3t0ZE%2B%2FQayD0S7%2F2RfMUvz9Qsh%2F9cFW8obuc4K3VDTkTJF%2B30ZRcW97TrdW3iNfEonx8BfqiSrfYAcYIIeDU%3D
That message was not signed with 144187999121393192DxViqQKPPrghj9M3. It was signed with a different address. It's fake.
