Abstract: A computer program stored in a computer readable storage medium includes commands which cause a processor of a node included in the blockchain network to execute steps. The steps comprising: recording at least a first transaction in a transaction table and a first body table when at least one first transaction occurs; generating header information for at least the first transaction when a preset condition is satisfied; recording the header information in a header table; and transmitting a signal including the first transaction and the header information to at least one node included in the blockchain network so that the first transaction is recorded in a second body table of each of a plurality of nodes included in the blockchain network and the header information is recorded in the second header table of each of a plurality of nodes included in the blockchain network.