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2021
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Invention
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Decentralized identifier (did)-based non-face-to-face user authentication method using non-face-t... |
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Invention
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Method for providing authentication service by using decentralized identity and server using the ... |
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2020
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Invention
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Zero-knowledge proof-based certificate service method using blockchain network, certification sup... |
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Invention
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Blockchain network-based virtual common id service method and service provision server using same... |
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Invention
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Method for providing relational decentralized identifier service and blockchain node using the sa... |
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Invention
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Method for providing virtual asset service based on decentralized identifier and virtual asset se... |
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Invention
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Method for providing online ticket service by using blockchain network and server using same. The... |
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Invention
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Method of using service by using pki-based one-time id, and user terminal using same. The present... |
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Invention
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Method and server for managing user identity by using blockchain network, and method and terminal... |
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Invention
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Method and server for managing identity of user by using blockchain network, and method and termi... |
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2019
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Invention
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Method and server for managing user identity using blockchain network, and method and terminal fo... |
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Invention
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Method for generating pki key based on biometric information and device for generating key by usi... |
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Invention
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Method for sso service using pki based on blockchain networks, and device and server using the sa... |
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Invention
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Method for oauth service through blockchain network, and device and server using the same. A meth... |
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2018
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Invention
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Blockchain-based payment method, and payment server using same. The present invention relates to ... |
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Invention
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Blockchain-based method for making payment for internet of things device, and server, service pro... |
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Invention
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Method for making payment for internet of things device by means of blockchain database and merkl... |
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Invention
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Method for approving use of card by using token id on basis of blockchain and merkle tree structu... |
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Invention
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Method for approving use of card by using blockchain-based token id and server using method. The ... |
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Invention
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Method for managing document on basis of blockchain by using merkle tree structure in utxo-based ... |
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Invention
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Method for managing document on basis of blockchain by using utxo-based protocol, and document ma... |
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G/S
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Business supervision of payment operations and of computer payment systems; Business administrati... |
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Invention
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Method for providing simplified account registration service and user authentication service, and... |
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Invention
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Method for superseding log-in of user through pki-based authentication by using blockchain databa... |
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Invention
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Method for superseding log-in of user through pki-based authentication by using merkle tree struc... |
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Invention
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Method for superseding log-in of user through pki-based authentication by using smart contact and... |
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Invention
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Method for providing payment gateway service using utxo-based protocol and server using same. The... |
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Invention
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Method and terminal for authenticating user by utilizing mobile id by means of blockchain databas... |
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Invention
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Blockchain database-based method and terminal for authenticating user non-face-to-face by utilizi... |
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2017
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Invention
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Method for providing integrated point service by using merkle tree structure in utxo-based protoc... |
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Invention
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Method for providing integrated point service by managing balance database for each block in bloc... |
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Invention
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Method for issuing currency and making payment using utxo-based protocol and sever using same. Th... |
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Invention
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Method for issuing currency and making payment using merkle tree structure in utxo-based protocol... |
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Invention
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Method for issuing currency and making payment by managing balance database for each block in blo... |
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Invention
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Method for providing smart contract-based certificate service, and server employing same. The pre... |
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Invention
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Method for issuing, redeeming, refunding, settling and revoking electronic voucher by using utxo-... |
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Invention
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Method for issuing, redeeming, refunding, settling and revoking electronic voucher on basis of ut... |
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Invention
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Method for issuing, redeeming, refunding, settling and revoking electronic voucher by managing ba... |
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Invention
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Method for providing recording and verification service for data received and transmitted by mess... |
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Invention
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Method and server for providing notary service for file and verifying file recorded by notary ser... |
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2016
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Invention
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System for issuing public certificate on basis of block chain, and method for issuing public cert... |
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Invention
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Tampering verification system and method for financial institution certificates, based on blockch... |
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Invention
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Accredited certificate authentication system based on blockchain, and accredited certificate auth... |
