Zopa is the first p2p lending marketplace to run a hackathon called Zopathon. Participants a challenged to code something ‘that makes interest rates more interesting’. I have seen several hackathons in the fintech space but usually they are organized by banks, service providers or accelerators and none were p2p lending specific. Zopa says they will introduce APIs, that can be used in the 24 hour event. Sign up for participants is here.