Hey there, this is actually a fully non-custodial, multi-chain wallet. We use some familiar Web2 patterns to derive the private key for the user, but it's fully non-custodial and never touches a remote server. Here's some more info on what we do under the hood: https://vesselpassport.zendesk.com/hc/en-us/articles/5616100...

Happy to share more details if helpful!