Using keys with targeted access to the blockchain to verify and authenticate identity

A system comprising:

• a non-transitory memory storing instructions;
• and
• one or more hardware processors coupled to the non-transitory memory and configured to read the instructions from the non-transitory memory to cause the system to perform operations comprising:
• uploading a plurality of credentials to a blockchain;
• receiving a server public key from a server;
• generating a user public key with the server public key and a user private key, wherein the user public key includes permissions to retrieve a subset of credentials from the plurality of credentials uploaded to the blockchain;
• and
• transmitting the user public key to the server, whereby the server obtains an identity token using the user public key and a server private key, wherein the identity token includes the subset of credentials from the plurality of credentials.

A method, comprising:

• transmitting a server public key of a server public-private key pair to a computing device that requests a transaction;
• receiving a user public key that identifies a subset of credentials from a plurality of credentials stored on a blockchain;
• determining, using a processor, that the user public key was generated based on a user private key and the server public key;
• requesting, using a server private key of the server public-private key pair and the user public key, an identity token that indicates the subset of credentials;
• receiving the identity token that includes the subset of credentials;
• and
• processing the transaction using the subset of credentials in the identity token.