Marscoin proposes a peer-to-peer public funding model for the colonization of cryptocurrency cyberspace built on top of the Bitcoin code. It attempts to steer a future Mars colony through the creation of a global superstate that voluntarily provides currency, encouraging digital currency as a stake in the colony's future economy, thereby addressing the fundamental unresolved funding barriers facing human space exploration efforts. Individuals who invest in this "shareholding" model of colony financing boost the currency's exchange rate, effectively providing early stakeholders with the capital they need to build future bases.