Abstract: According to one aspect of the present invention, there is provided a method for supporting non-face-to-face authentication in a blockchain network, the method comprising the steps of: providing an authenticatee node with authentication result information generated as face-to-face authentication for personal information of an authenticatee is performed by at least one authenticator node in a blockchain network, and matching and recording non-invertible operation information on at least a part of the authentication result information to an account associated with the authenticatee in the blockchain network; and when a request for non-face-to-face authentication of the authenticatee is made by an authentication requester node, verifying validity of information for authentication, which is provided from the authentication requester node for the request for the non-face-to-face authentication of the authenticatee, on the basis of the non-invertible operation information recorded in the blockchain network.