A digital arbitration system comprising a server node and at least one signatory node coupled together through a communication link. Each of the signatory node(s) may be configured with a unique private key which is used to digitally sign a message, a hash value of an electronic document for example,...http://www.google.co.uk/patents/US6219423?utm_source=gb-gplus-sharePatent US6219423 - System and method for digitally signing a digital agreement between remotely located nodes
