Each of the listeners has signed a “Partner’s Promise.” Painted by illustrator and designer Lauren Cat West, this contract is loosely based on the Pennsylvania Dutch Fraktur style of marriage contract, translated through the metaphor of a tree. The roots personify individuals whose early involvement in the project were fundamental to the project's growth. Carved into the trunk of the tree is a simple promise binding all 100 strangers of the project to its core goal over the next ten years. The five branches of the tree represent the five listening advocates, and each of the 100 leaves is signed by one of the listeners. When complete, this contract, signed by all 100 participants, will be made public as a mural in Philadelphia.