The Bitcoin Foundation mission leads to the early specific goals of financially sponsoring the efforts of the core development team, funding core infrastructure such as a test network and a DNS seed node, publishing a set of best practices for bitcoin integration, coordinating responses to business and media inquiries, and organizing an annual bitcoin conference with the first one being held in Silicon Valley.
The initial install code would need to be verified for authenticity and the only way to accomplish that is to have the core developer sign the code personally or have a neutral third-party like the Bitcoin Foundation sign downloadable code with their certificate as a registered developer.