Casa customer data indicates part of the 233k BTC flow came from single-key Ledger and Trezor users shifting to multisig and from multisig users removing Coldcard devices after the July 30 attack waves.
Casa, a multisig security provider founded in 2018, positions itself as a "Swiss bank for sovereign individuals," with CEO Nick Neuman emphasizing practical sovereignty for high-value Bitcoin holders amid rising institutional adoption and physical threats.
