Need help with package installation error: "unknown trust" and "corrupted PGP signature"

[filo]

Hi there, welcome to the forum.
I think this announcement from yesterday is related to your issue:

Chaotic-AUR: current status

Forwarding this here: One of our signing keys expired today, causing packages to fail to install with the key being marked as "is unknown trust " - we are aware of this and try to get it fixed as soon as possible, while also ensuring a condition like this does not occur again! Edit: working state has been restored.