Mints are independent of each other. You can hold ecash of many mints but if you have 200 sats with of ecash from mint A and mint A rugs you lose those 200 sats. But your sats at mint B are not effected
Discussion
nostr:npub1qqvx83ur0hq9ca5wfmvdd2ed6ew476hemalz4ycept8h7j53t3aqskwlen You getting all this? 😅
With fedimint the guardians have to collude to do that with cashu there is no multi sig