Abstract: There is provided with a blockchain-based evidence data notarization system comprising a user terminal for transmitting the evidence data in accordance with a notarization request; a notary server for transmitting the generated hash value to the user terminal and a notary terminal, respectively; and a blockchain server for receiving a signature written in the hash value from the user terminal and the notary terminal, respectively and generating a smart contract block.

Abstract: Provided with a blockchain-based shared asset trading system for tokenizing and trading a shared asset comprising a plurality of sharer terminals, provided on a sharer side, for transmitting an original warranty containing the appraisal result of the shared asset and transmitting a warranty in which the sharer's signature has been entered to the original warranty; a blockchain network for receiving and storing the original warranty in a smart contract block, issuing a token based on the smart contract block and generating an electronic wallet in which the token is stored; and an electronic wallet management server for receiving the warranty in which the signature has been entered from the plurality of sharer terminals and transmitting a transaction including the warranty in which the signature has been entered to the original warranty.