Bitcoin is electronic P2P cash that is valuable over legacy systems due to the monetary autonomy it brings to its users. Bitcoin seeks to address the root problem with conventional currency: all the trust that is required to make it work. It is not that justified trust is bad, but trust makes systems fragile, opaque and expensive to operate. Conflict failures result in systemic collapses, conservation of trust creates inequality and monopoly, and points of trust strangulation that arise naturally can be abused to deny access to due process. Through the use of cryptographic tests, decentralized networks and open source software Bitcoin minimizes and replaces these trust costs.