Oh! I finally can do it. For those that fine the exercise useless, let it be that you can do it first and you would see the use when the opportunity comes. Keep learning guys. signing.
Address: I can sign a message. Thanks to you OgNasty
Message: bc1q6z9sytz4lxcunk8m5nl2zejalnke4hy6d0jc7x
Signature: HyBgyT/rAWAG6naypvS24kDc41ope0vE0s4/+FjbRE3cVkgC0Ap5jIq9P8LrhsUJPc9GItySoTsBIZhSCrvbkpE=
Oh! I just noticed i made errors in posting my signed message, mixing up address and message. Also didn't follow due process, hope i get it right this time.
Address: bc1q6z9sytz4lxcunk8m5nl2zejalnke4hy6d0jc7x
Message: I'm bevnation from bitcoin talk and today is 02/03/2021 and i can sign a message to prove my address.
Signature: IG4nyZ0r8y4FGwQN+xLtP2rfwpCDOWlzGpQHaYVLndNjC+Cxdp4S7GZY6l7xSrQ+NvegsCD5/3djAh+1tDQiLsM=