> An n of m scheme with each n being held by parties unlikely to collaborate is another solution. there are two way to do this currently- multisig wallets and

> An n of m scheme with each n being held by parties unlikely to collaborate is another solution. there are two way to do this currently- multisig wallets and shamir's secret sharing algorithm. multisig wallet is more widely supported. Gnosis Safe is a popular implementation, but requires multiple transactions per final action. shamir's secret sharing allows splitting the secret off-chain, which means you only pay gas once. it's hard to find a safe implementation and be confident that it works correctly.