Check the updated CashuBTC Round Robin Mint Auditor. The auditor receives ecash donations and sends random Lightning payments between mints. Forever. The sats go in a circle until all is lost to fees or rugs. If a mint fails to pay, it's marked with a scary red label. It isn't a guarantee a mint won't rug (at all!), but a good indicator of its reliability over time. What's interesting about this idea, and why it works so well with the privacy that ecash provides, is that the mint can't tell the auditor apart from a regular user. This is key! This is what we mean by "a mint can only rug everyone or no one"! The looks like a regular user trying to make a payment – the mint doesn't know that it's talking to the auditor which would allow it to pretend everything is fine. Note: The auditor frequently changes IP address. We plan to incorporate this data into Cashu wallets so that users can be warned if they use a fishy mint. I don't think this is a perfect solution but the fact that a blind custodian can be probed by third parties without being able to tell is fascinating and certainly useful. Donate ecash from a mint you'd like to add to the list. The auditor will begin probing the mint and compile statistics. You can check it out here: https://audit.8333.space