Read about it on this nice forum post, here: https://deeponion.org/community/threads/if-you-register-files-with-deepvault-pay-attention.4092/
Good luck and be careful!
Is there a post about how DeepVault works in terms of the files were stored on peoples computers and not on the blockchain. Basically, If the owner of the file makes changes, the other person that has a relationship with this contract owner, for example, need to trust him about keeping the integrity on the file. in other words, this a not a trustless system until now, right?
There is a lot of information already in existence about DeepVault. I suggest that you go to the official forums to learn more, as there are plenty of videos and expert guides that will answer you questions to completion. I'll try to make a short stab at the question that you are posing, but I'll admit I'm a tad confused by your wording. Ultimately, if I were to make an important document with critical data stored to it, and uploaded that document to the DeepVault after a signature, etc. was placed on it I could later verify that none of the numbers were changed on that document later. There is no trust required as you have the block and time of the original upload on your 'receipt'. Again, I am making it simple and there are more in depth guides in their appropriate places.
My post was just to warn people about something already in place within the DeepOnion system... when you create an address you get 100 subaddresses for "change". To over-simplify, by default when you spend DeepOnion you pay with your entire wallet and then are given back change into a new wallet to increase privacy. Due to airdrop rules about holding onto your coins, you are encouraged to use coin-control features (detailed in the link I posted) to ensure you are within compliance. This is not an issue if you are not part of the airdrop.