With
safe register get 807170c40a479f0457cb0c2d85dc9fda084562e31df43a667f72bbaedcc654f58394fc07181bceef649351a86c66c4efb1e408a106f1b74f08a4a4eb33c99c95d65b5a86cd077e095cf33dd8dc561b05
You should be able to get the register, and the entry is an address, that points to a text file , that contains names and addresses to a few public files that you can download.
If you upload some more files to be public, you can edit the text file, upload it, and update the register.
Now we have a list of public files inside the testnet. If there is a better way to make this, just do it. This was me just haphazardly trying something.