Disclosed is a method for trading private information access rights based on a distributed ledger, performed by a distributed network system including a plurality of distributed servers to perform authentication and store a token, the method including giving rights to use the token to a buyer terminal by performing authentication upon receiving a token trade request, permitting a service application server to use the token by performing authentication upon receiving a token usage request, providing, by the service application server, a predefined service by using the token and broadcasting usage detail of the token to the distributed network system, and updating, by the distributed server, the usage detail of the token.