Verifying an identity based on multiple distributed data sources using a blockchain to safeguard the identity

A non-transitory computer-readable medium in which instructions executable by a processing device are stored for causing the processing device to:

• receive a request for a token from an entity for authenticating an online identity of the entity to an online service;
• store the request in a blockchain that represents the online identity of the entity by adding a new block to the blockchain, the blockchain being a database including one or more ordered blocks based on one or more identity sources that represent personally identifiable information of the entity, the new block including data indicating the request for the token;
• generate the token based on the one or more ordered blocks in the blockchain;
• transmit the token to the entity;
• receive the token from the online service;
• and
• transmit, based on receiving the token from the online service, a confirmation of the online identity of the entity to the online service.

A method comprising:

• receiving, by a processing device, a request for a token from an entity for authenticating an online identity of the entity to an online service;
• storing, by the processing device, the request in a blockchain that represents the online identity of the entity by adding a new block to the blockchain, the blockchain being a database including one or more ordered blocks based on one or more identity sources that represent personally identifiable information of the entity, the new block including data indicating the request for the token;
• generating, by the processing device, the token based on the one or more ordered blocks in the blockchain;
• transmitting, by the processing device, the token to the entity;
• receiving, by the processing device, the token from the online service;
• and
• transmitting, by the processing device, a confirmation of the online identity of the entity to the online service based on receiving the token from the online service.