'Get the trust for another member.
Currently this is just the length of their chain.
:param member: the member we interacted with
:type member: dispersy.member.Member
:return: the trust value for this member
:rtype: int'

def get_trust(self, member):

    block = self.persistence.get_latest(member.public_key)
    if block:
        return block.sequence_number
    else:
        return 1
