Abstract: Systems and methods for payment processing using cryptocurrency assets.

Abstract: A method for managing sensitive data, including: receiving an encryption key from a third party recovery agent; at a user agent executing on a user device, encrypting the sensitive data with the encryption key; and storing the encrypted sensitive data at a third party storage provider system. The method can optionally include, at the user agent: requesting the encryption key from the third party recovery agent using a set of recovery agent authentication credentials; requesting the encrypted sensitive data from the third party storage provider system using a set of storage provider authentication credentials; and decrypting the encrypted sensitive data using the encryption key.

Abstract: Systems and methods for blockchain wallet recovery, including: receiving a wallet recovery request from a user; sending a signed recovery transaction to the wallet, the signed recovery transaction comprising recovery instructions; and providing wallet access to the user, according to the recovery instructions, when a recovery condition is met. In examples, the recovery transaction is signed by a recovery key, different from a set of old wallet owner keys, that is associated with the wallet; the recovery instructions include new owner address(es) associated with a set of new owner keys; and providing wallet access includes activating the new owner addresses for the wallet after the recovery transaction is verified as signed by the recovery key.