Join GitHub today
GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.Sign up
The bylaws need to be signed by two founding members who are administrators of the organization (official source). Since all Liberapay members will be codirectors, any two can sign.
There doesn't seem to be a procedure to cryptographically sign this kind of contract, so we have to do it the old-fashioned way: by hand.