Quote from: Muhammed Zakir on August 10, 2015, 10:20:27 AM

-snip-
I have contacted jackjack and also I am looking for the developer of coinig.

Thanks.

Quote from: Muhammed Zakir on August 10, 2015, 10:20:27 AM

Quote from: lolnapp on August 10, 2015, 10:13:46 AM

just want to check can greenbits sign a message?
if yes, how Huh

You can't.

Correct, this is true for all multi sig addresses or services that use multi sig. The problem is that there is no standard how a signature would be done with more than one key[1].

Quote from: lolnapp on August 10, 2015, 10:23:48 AM

-snip-
so...is it better to change an wallet with sign message funtion?
as I may want to sell the account in the future.

You dont have to use the same wallet for signing as you use for spending. You can create a wallet just for signing messages.

[1] https://www.reddit.com/r/Bitcoin/comments/2k3t9c/can_i_sign_a_message_using_greenaddress/clhmbq2