A method for authenticating users contactlessly with decentralized identifiers (DID) using verifiable credentials is provided. The method includes steps of: an authentication supporting server, (a) on condition that a user DID is issued and a user public key is registered in a blockchain network, in response to a contactless authentication request, (i) retrieving the user public key from the blockchain network or from a user DID document sent by a resolving server and (ii) verifying a user signature value; and (b) (i) transmitting real-time feature point information and identity confirmation information to a certification authority (CA) server, (ii) allowing the CA server to transmit authentication result information, (iii) retrieving a CA server public key from the blockchain network or from a CA server DID document sent by the resolving server, (iv) verifying a CA server signature value, (v) registering the authentication result information, and (vi) transmitting a user verifiable credential.