Dynamic biometric authentication based on distributed ledger data

A device, comprising:

• a sensor unit;
• a communications unit;
• a storage unit storing instructions;
• and
• at least one hardware processor coupled to the sensor unit, the communications unit, and the storage unit, the at least one hardware processor being configured to execute the instructions to:
• transmit, via the communications unit, a public cryptographic key to a computing system, the computing system being configured to obtain first biometric data from an element of distributed ledger data associated with the public cryptographic key;
• receive the first biometric data from the computing system via the communications unit;
• and
• authenticate an identity associated with the device based on the first biometric data and on second biometric data captured by the sensor unit.

A computer-implemented method, comprising:

• by at least one hardware processor, transmitting a public cryptographic key to a computing system, the computing system being configured to obtain first biometric data from an element of distributed ledger data associated with the public cryptographic key;
• receiving, by the at least one hardware processor, the first biometric data from the computing system;
• and
• authenticating, by the at least one hardware processor, an identity associated with the device based on the first biometric data and on second biometric data captured by a sensor unit.

A tangible, non-transitory computer-readable medium storing instructions that, when executed by at least one hardware processor, cause the at least one hardware processor to perform a method, comprising:

• transmitting a public cryptographic key to a computing system, the computing system being configured to obtain first biometric data from an element of distributed ledger data associated with the public cryptographic key;
• receiving the first biometric data from the computing system;
• and
• authenticating an identity associated with the device based on the first biometric data and on second biometric data captured by a sensor unit.