METHOD FOR ISSUING, REDEEMING, REFUNDING, SETTLING AND REVOKING ELECTRONIC VOUCHER BY MANAGING BALANCE DATABASE BY BLOCKS IN BLOCKCHAIN, AND SERVER EMPLOYING SAME

WIPO Patent Application WO/2018/070784

A2

After electronic voucher data, a public key and a signature value which are for issuing an electronic voucher are acquired from a specific issuer and validated and if the validation is successful, the invention generates an electronic voucher issuance transaction and registers same in a private blockchain database, provides PrixTxid therefor to the specific issuer, updates, by means of delta indicating a change level, value information included in the electronic voucher data and registers same in a balance database, and, if a predetermined condition is met, registers a representative hash value, generated by computing a specific hash value associated with the electronic voucher issuance transaction and a neighboring hash value matching the specific hash value, in a public blockchain database and acquires Txid therefor.

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SONG JOO HAN (KR)
HONG JAY WU (KR)
UHR JOON SUN (KR)

PCT/KR2017/011210

April 19, 2018

October 11, 2017

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COINPLUG INC (KR)

G06Q20/38; G06Q30/02; G06Q30/04

SU INTELLECTUAL PROPERTY (KR)

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