A method for tracking multiple classes of records in a single blockchain is disclosed, the method comprising: by the administrative node computer, receiving, from a first node computer, a request for a class identifier for a certain class, the request including an address identifier associated with the first node computer; generating the class identifier; creating an association between the class identifier and the address identifier; receiving a data element from the first node computer, the data element including the address identifier, the class identifier, and record update information; verifying that the class identifier is associated with the address identifier; verifying that the record update information is permitted according to the class identifier; and creating, a block for a blockchain, the block including the data element. Class identifiers can used for each record entry to distinguish between classes within the blockchain.