On my new stamp to go on the back of our checks to subcontractors it says Signature Required in Two Places. Who has to sign? my company and the Sub? just the Sub?

I want to make sure we have the right info regarding the new stamp for our checks made to Subcontractors. it says: By endorsement hereon, the payee acknowledges receipt of the amount of this check in full payment & satisfaction for all work preformed and/or materials furnished on the premises as described on the face hereof to date shown below, and waives all right to mechanic's and/or materialman's lien therefor. Signature Required in Two Places. date___________ then two signature lines____ ____. Must be endorsed by payee in person, or if a corporation must be signed by officer giving his title.