The image doesn't prove anything, I think theymos accept only signed message from an old well know bitcoin address that you (or the real owner) used in the past.
-----BEGIN BITCOIN SIGNED MESSAGE-----
The user Jude Austin is a stolen account!
-----BEGIN SIGNATURE-----
1PoXwtXNP5xTbQEvYiARNBjRAEQa55UTPN
HOsS9IJY6x8JmkWndMM2iDMwsikKG0FDpFpVcLUT2TqW2rq6tOE4K/QmbFxTq3BE/lbjCz4MOkEWo1EngcyWTAk=
-----END BITCOIN SIGNED MESSAGE-----
-----BEGIN BITCOIN SIGNED MESSAGE-----
Jude Austin is a stolen account!
-----BEGIN SIGNATURE-----
1dP6ckGUJXWMM3ib277gNyvUd9gkgzqfC
HFeNwJtZqjWkdI/mhOa/kL9m8gO31j130AqGhZSQHLzhzMt2u49L5IbQFbQzE/T2U+KsB/l1kI/UqfbLLMsNz0c=
-----END BITCOIN SIGNED MESSAGE-----
.