I haven't been able to verify both of your signed messages.
The achow101 account message looks like the "Bitcoin signature" could be missing something to me.
Not sure about the other yet.
I need to know what was the exact message you signed, did you add the bitcointalk profile in the message?
I think the links to the posts got shortened automatically by this forum software. I will post the signed messages again with the links outside of the message.
Edit: here it is
-----BEGIN BITCOIN SIGNED MESSAGE-----
I am achow101 on Bitcointalk. Today is November 1st 2015
-----BEGIN SIGNATURE-----
1At6EhbjN8BLCJz4pVAjsFcNzhzxQmXrwZ
G0B8HG45ua07uFuGdxs5oY9yZPo0Zh/eEsWMRQ4CdbFUHAZhdncFuf9VbLIY+NdHBHXA/DHePgVk8VisxiJYQwg=
-----END BITCOIN SIGNED MESSAGE-----
Link to staked address:
https://bitcointalk.org/index.php?topic ... sg11267716
-----BEGIN BITCOIN SIGNED MESSAGE-----
I am knightdk on Bitcointalk. Today is November 1st 2015
-----BEGIN SIGNATURE-----
16mT7jrpkjnJBD7a3TM2awyxHub58H6r6Z
G4ea/TBGO0tOx+xqCJUw0wafobq/d+fotjOtN5wBHkpMG9ol+okGCY1ioiZtvsZA1Bgp1gseOzK0u6aBUy86fAU=
-----END BITCOIN SIGNED MESSAGE-----
Link to staked address:
https://bitcointalk.org/index.php?topic ... sg11476547