Abstract: Systems, devices, and methods for creating and managing web3 app credentials, including: determining a private key and a public key; encrypting the determined private key into a plurality of separate keys; transmitting the first key to a third party provider; transmitting the second key to a cloud storage device; encrypting the first key and the second key; decrypting the second key; transmitting the decrypted second key; transmitting a transaction sign request to a secure third-party trusted execution environment; performing a user identity verification; transmitting a request to the third party provider for the first key; performing reconstruction of the original private key based on the first key and the second key; and signing a digital wallet transaction based on the reconstructed original private key received from the trusted execution environment.