Multi-Institution Custody offers a third way to hold bitcoin with all of the hardware wallet hacks, you don't need to give up and send it all back to a custodian with Multi-Institution Custody, three separate entities each hold one key in a 2 of 3 multisig your bitcoin is owned by you and controlled by you this is multi-vendor multisig but it's out of the box, and there's no technical burden to set it up or maintain it keys are institutional grade, 100% offline, sharded, & geographically distributed and you can still hold bitcoin in self-custody too, but you don't have to hold all of it by yourself anymore