There are always trade-offs... There are a lot of different designs you can do with PRFs. We decided to prioritizie simplicity in our protocol, inline with *our* use cases. We don't need to support imported wallets or deal with UTXOs in our SDK. We've also vetted the approach with design partners.
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Thanks Roy. Good discussion re prf here everyone … I have a better understanding of the trade-offs of each design now. For breez sdk the simplified design makes sense. Re import … I presume existing Liquid/Spark users could just derive a new wallet from the passkey and sweep funds from their old wallet with relatively low fees. Is this how existing misty breez users will be migrated?