Thanks for asking!
Soliant will be hosting a server in the cloud (AWS). I will come up with passwords for each team and send them to you. Those are the master passwords we'd like you to use on your files. No other team will know your team's password.
We intend for the server to be available on Monday when the spec is announced. It will remain available until 9am on Thursday July 21st. At that point the teams will lose access to the server, and the six judges will begin their work.
The advantage of the AWS model is that if we find that it doesn't have the power to keep up with all of you at work, we can increase its power very easily.