Ability to view trade logs
In the control panel, there should be trade logs for the past 2 week.
The Ability to view your trade logs will help a user track down any loaned items that go missing.
Lost/misplaced items are usually an honest mistake, mostly due to forgetting who it was loaned out to.
Access to view trade logs on your own would also reduce the amount of time it takes to investigate tickets that are related to lost/scammed/stolen items. In a scenario where there aren't any screenshots, the player can narrow the exact trade himself which saves some trouble for the GMs.
Loaning item before WoE is a common practice for most guilds. Even though there is an existing option to screenshot your trade. Access to trade logs would be convenient to have if it doesn't cause too much performance issues.