To encrypt and distribute a message, a processor of a sender device may determine a public key associated with a recipient identifier. The processor may request confirmation of a the recipient identifier from a central authority server. The processor may receive the confirmation of the recipient identifier from the central authority server. The processor may encrypt the message using the public key to form an encrypted message. The processor may distribute the encrypted message. The encrypted message may be decipherable using a private key associated with the recipient identifier and used by a recipient device to securely interact with the distributed blockchain.