Communication node, method of operating thereof and collaborative system

The present invention relates to a communication node, a method of operating the same, and a collaborative system. In an example of the present invention, there may be provided an operation method of a first communication node (a transmission node) comprising: a step of confirming whether data is to be transmitted to the receiving side communication node by a transmitting side communication node among communication nodes connected to each other on the network; a step for generating first control information for verifying authentication and integrity of the data; a step for generating a first control information including information for authenticating and verifying integrity of the data to be transmitted by the transmitting side communication node; a step for sharing the first control information with at least one or more participating communication nodes including the receiving side communication node through a channel formed in a block chain network; and a step for transmitting a message including the data through a channel formed in a network different from the block chain network.