There should be a command to download the chatlog of a server for staff. Example of somewhere this could be used:

Algiux (op of bet server) said he would sponsor someone 25k. On 420, that person was in a bad spot, so he only bet 5k and said he "lowered" even though next in line was a 10k self bet, meaning he would have had to do at least 15k. He said he would do 25k earlier, and it was too far up to screenshot, thus meaning nobody could report.

If a moderator could download the chat log, then everything would be fine.