Error: key "0706B90D37D9B881" could not be looked up remotely

Kept receiving the error in topic title when trying to update Chatoic-Aur keys.

Looked through the forum and tried:

sudo pacman -Sy chaotic-keyring

But was unable to complete due to the error above.

Was able to resolve it by following the instructions for "How to use it?" from:

Thought I would share in case anyone else is stuck at the same point.

Glad you managed to solve it yourself, it is another good hint for future readers/searcher, but please be aware that this issue has been entered and solved many times in the forum (even just search for that key).
But above all, in addition to:

You should have worked through the possible steps in: