Method and server for recording data with regard to the usage of the product and verifying the same in order to manage genuine products
KR101841565B1
Method for issuing, using, refunding, settling and revocating electric voucher in use of merkle tree structure on the basis of unspent transaction output, and server using the same
KR101837168B1
Method for approving the use of credit card by using token id based on blockchain and server using the same
KR101816650B1
Method for providing simplified account registration service and authentication service, and authentication server using the same
KR101816653B1
Method for providing login flow via authentication based on public key infrastructure in response to user’s login request for using service provided by service provider server in use of smart contract with blockchain database and server using the same
KR101816652B1
Method for providing login flow via authentication based on public key infrastructure in response to user’s login request for using service provided by service provider server in use of merkle tree structure on the basis of unspent transaction output protocol and server using the same
KR101816651B1
Method for providing login flow via authentication based on public key infrastructure in response to user’s login request for using service provided by service provider server in use of blockchain database with unspent transaction output based protocol and server using the same
KR101829730B1
Method for certifying a user by using mobile id through blockchain database, and terminal and server using the same
KR101837169B1
Method for providing secret electronic voting service on the basis of blockchain with merkle tree structure by using zero knowledge proof algorithm, and voting coin minter server, voting token distributor server and voting supporting server using the same
KR101829721B1
Method for certifying a user by using mobile id through blockchain, and terminal and server using the same
KR101829729B1
Method for certifying a user by using mobile id through blockchain and merkle tree structure related thereto, and terminal and server using the same
KR101841929B1
Method for issuing document offline and method for validating issued offline document on the basis of merkle tree structure, and server using the same
KR101837166B1
Method for issuing and paying money using updated status of balance database by respective blocks in blockchain, and server using the same
KR101837167B1
Method for issuing and paying money in use of merkle tree structure on the basis of unspent transaction output protocol, and server using the same
KR101767534B1
Method for providing identity verification using card base on near field communication, card, verification terminal, verification support server and identity verification server using the same
KR101818601B1
Method for providing identity verification using card base on near field communication, card, verification terminal, verification support server and identity verification server using the same
KR101767535B1
Method for providing identity verification via card base on near field communication, card, verification terminal, verification support server and identity verification server using the same
KR101795695B1
Method for providing archiving service and verification service of data transceived via messenger service and server using the same
KR101795696B1
Method for providing archiving and verification services of data transceived via messenger service and server using the same
KR101723405B1
Certificate authentication system and method based on block chain
