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(X0) 16268885: METHOD FOR MANAGING INFORMATION USING TREE STRUCTURE BASED ON BLOCKCHAIN, SERVER AND TERMINAL USING THE SAME

(A1) 20190243986: METHOD FOR MANAGING INFORMATION USING TREE STRUCTURE BASED ON BLOCKCHAIN, SERVER AND TERMINAL USING THE SAME

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(X0) 16066155: METHOD AND SERVER FOR AUTHENTICATING AND VERIFYING FILE

(A1) 20190020485: METHOD AND SERVER FOR AUTHENTICATING AND VERIFYING FILE

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(X0) 16049328: METHOD AND SERVER FOR PROVIDING NOTARY SERVICE FOR FILE AND VERIFYING FILE RECORDED BY NOTARY SERVICE

(A1) 20180365448: METHOD AND SERVER FOR PROVIDING NOTARY SERVICE FOR FILE AND VERIFYING FILE RECORDED BY NOTARY SERVICE

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(X0) 15975110: METHOD FOR PAYING COST OF IOT DEVICE BASED ON BLOCKCHAIN, AND SERVER, SERVICE PROVIDING DEVICE, AND DIGITAL WALLET USING THE SAME

(A1) 20180330348: METHOD FOR PAYING COST OF IOT DEVICE BASED ON BLOCKCHAIN, AND SERVER, SERVICE PROVIDING DEVICE, AND DIGITAL WALLET USING THE SAME

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(X0) 15975714: METHOD FOR PAYING COST OF IOT DEVICE BASED ON BLOCKCHAIN AND MERKLE TREE STRUCTURE RELATED THERETO, AND SERVER, SERVICE PROVIDING TERMINAL, AND DIGITAL WALLET USING THE SAME

(A1) 20180330349: METHOD FOR PAYING COST OF IOT DEVICE BASED ON BLOCKCHAIN AND MERKLE TREE STRUCTURE RELATED THERETO, AND SERVER, SERVICE PROVIDING TERMINAL, AND DIGITAL WALLET USING THE SAME

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(X0) 15857017: METHOD FOR PROVIDING UNITED POINT SERVICE IN USE OF UNSPENT TRANSACTION OUTPUT BASED PROTOCOL AND SERVER USING THE SAME

(A1) 20180189877: METHOD FOR PROVIDING UNITED POINT SERVICE IN USE OF UNSPENT TRANSACTION OUTPUT BASED PROTOCOL AND SERVER USING THE SAME

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(X0) 15857178: METHOD FOR PROVIDING UNITED POINT SERVICE USING UPDATED STATUS OF BALANCE DATABASE WITH BLOCKCHAIN AND SERVER USING THE SAME

(A1) 20180189878: METHOD FOR PROVIDING UNITED POINT SERVICE USING UPDATED STATUS OF BALANCE DATABASE WITH BLOCKCHAIN AND SERVER USING THE SAME

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(X0) 15782132: METHOD FOR PROVIDING CERTIFICATE SERVICE BASED ON SMART CONTRACT AND SERVER USING THE SAME

(A1) 20180109516: METHOD FOR PROVIDING CERTIFICATE SERVICE BASED ON SMART CONTRACT AND SERVER USING THE SAME

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(X0) 15729967: METHOD FOR ISSUING, USING, REFUNDING, SETTLING AND REVOCATING ELECTRONIC VOUCHER USING UPDATED STATUS OF BALANCE DATABASE BY RESPECTIVE BLOCKS IN BLOCKCHAIN, AND SERVER USING THE SAME

(A1) 20180101844: METHOD FOR ISSUING, USING, REFUNDING, SETTLING AND REVOCATING ELECTRONIC VOUCHER USING UPDATED STATUS OF BALANCE DATABASE BY RESPECTIVE BLOCKS IN BLOCKCHAIN, AND SERVER USING THE SAME

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