A method for privacy control in release of protected information includes: receiving, from a first system, a decryption key, request identifier, and a payload identifier by a second system; storing, in the second system, a blockchain comprised of blockchain data values, each blockchain data value including a registration identifier and encrypted data set; identifying, by the second system, a specific blockchain data value where the registration identifier matches the payload identifier; decrypting, by the second system, the encrypted data set in the specific blockchain data value using the decryption key; and transmitting, by the second system, the decrypted data set to a third system using the request identifier.