The disclosed technique secures a seed phrase configured to access a digital wallet, which holds private keys to access digital assets on a blockchain. Copies of portions of the seed phrase are stored at multiple electronic devices. The seed phrase can be reconstructed at a particular device by retrieving a necessary and sufficient number of the portions from the other devices. In one example, the portions can be shared among devices when in physical proximity to each other and/or when the devices are authenticated as belonging to the same user, which owns the digital wallet. As such, the seed phrase can be stored securely across multiple devices and retrieved even when one of those devices is lost, damaged, or stolen.