CONTROL METHOD, MOBILE NODE, AND PROGRAM

A control method to be performed by a first mobile node disconnected from a mobile line among a plurality of mobile nodes each including a first distributed ledger and a second distributed ledger and being connectable to the mobile line includes: transmitting and receiving a mobile line connection status, which indicates whether the mobile line is connected, to and from each of one or more second mobile nodes via near-field wireless communication; building a MANET with the one or more second mobile nodes based on a first mobile line connection status of the first mobile node and a second mobile line connection status of each of the one or more second mobile nodes; generating, after the building of the MANET, first transaction data including at least first MANET routing information that is used to indicate the position and role of a mobile node in the network topology and indicates the MANET connection status of the first mobile node; and recording a block including the first transaction data into the first distributed ledger that is used for a blockchain in the MANET.