A project that claims to have a Guaranteed (Escrow) Fund to secure its service must include a digital signature from the guarantor. The terms of how disputes will be handled should be clearly explained. The guarantor must also provide their Bitcoin address or PGP public key so the signed message can be verified. The guarantor should be a trusted and well-known member of the cryptocurrency community, such as from Bitcointalk, Altcoinstalks, or the WLC community.