hi guys,

so i have AM shares on bitfunder and my public adress was from my blockchain.info wallet. could someone point me to instructions on how to sign a message with blockchain.info to complete this process: https://amclaims.weexchange.co/
is it the custom transaction function? if so i don´t know where to find the signature, all i see is the hash. and also: do i just make any transaction that displays the message from that portal?

thank you!