1. Outages can happen once in a while due to DDoS attacks and other technical issues. What do you do in this case when the service goes offline for 24 hours, with some user orders not yet processed? If by that time the letter of guarantee is obsolete, how will the innocent users prove to own the funds in unfinished orders?
The letter of Guarantee comes first and in the letter they give you has sending address . You can always verify the LOG. One should not send any coin without verifying the signed message of LOG.