WO2021006251A1 - Procédé de traitement de sauvegarde d'actifs, et support d'enregistrement sur lequel un programme a été enregistré - Google Patents

Procédé de traitement de sauvegarde d'actifs, et support d'enregistrement sur lequel un programme a été enregistré Download PDF

Info

Publication number
WO2021006251A1
WO2021006251A1 PCT/JP2020/026480 JP2020026480W WO2021006251A1 WO 2021006251 A1 WO2021006251 A1 WO 2021006251A1 JP 2020026480 W JP2020026480 W JP 2020026480W WO 2021006251 A1 WO2021006251 A1 WO 2021006251A1
Authority
WO
WIPO (PCT)
Prior art keywords
asset
account
transaction
asset transfer
transfer
Prior art date
Application number
PCT/JP2020/026480
Other languages
English (en)
Japanese (ja)
Inventor
西村　祥一
秀和 近藤
Original Assignee
Ｇ．Ｕ．Ｌａｂｓ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ｇ．Ｕ．Ｌａｂｓ株式会社 filed Critical Ｇ．Ｕ．Ｌａｂｓ株式会社
Publication of WO2021006251A1 publication Critical patent/WO2021006251A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/04—Payment circuits
    • G06Q20/06—Private payment circuits, e.g. involving electronic currency used among participants of a common payment scheme
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/36—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using electronic wallets or electronic money safes

Definitions

  • the present invention relates to a recording medium in which a backup processing method and a program of an asset when a private key is lost are recorded.
  • Virtual currency (cryptocurrency) users can manage virtual currency with a wallet created based on the public key.
  • wallets provided by virtual currency exchanges, software wallets (mobile wallets), and hardware wallets.
  • the virtual currency can perform processing such as asset transfer by assigning an electronic signature created by the private key corresponding to the wallet to the transaction and executing it. Since the private key is necessary for executing transactions such as asset movement, it is desirable to strictly manage it.
  • Patent Document 1 discloses a technique for verifying mapping information and requesting an electronic signature by a predetermined management user when updating from an old public key to a new public key.
  • the mapping information is associated with an ID, a public key, a spare public key, and IDs of a plurality of management users.
  • the invention described in Patent Document 1 verifies the map transaction in a specific virtual currency system and guarantees the validity before and after the update of the public key. Therefore, the invention described in Patent Document 1 lacks versatility.
  • Patent Document 2 when the private key is lost or stolen, the private key is revoked (invalidated) and a new private key is reissued by using the biometric signature using the user's biometric information as the key.
  • the technology that continuously uses the blockchain system is disclosed.
  • the user may feel psychological resistance to using biometric information, and it is necessary to prepare a public key revocation application.
  • the present invention provides an asset backup processing method and a program for such a problem.
  • the asset backup processing method includes a step of executing an asset transfer permission transaction including information on an asset transfer source account, an asset transfer destination account, an asset, and an execution account, and an asset transfer permission. Based on the transaction of, the step of recording the permission information, the step of triggering the asset move, the step of executing the asset move transaction by the execution account, and the asset move process in response to the execution of the asset move transaction. Includes steps to perform.
  • the user can move the assets to the backup account, and there is no risk of the user's assets leaking.
  • it can be configured as a general-purpose configuration according to the platform.
  • FIG. 1 is a diagram illustrating the concept of a backup system according to an embodiment of the present invention.
  • FIG. 1 illustrates a user device 100, a trustee device 110, and a blockchain 120.
  • the user device 100 is one or more devices operated by the user, and can be, for example, a smartphone, a tablet, a PC, or the like.
  • the user device 100 can install a wallet application for managing any asset and any other application.
  • the user device 100 may also access a Web wallet, Internet banking, etc. on the Internet.
  • Assets include any transferable assets such as funds such as virtual currency and fiat currencies, licenses, the right to participate in events, other contractual rights, digital assets and the like.
  • Digital assets may also include data to be traded in games such as CryptoKitties.
  • the account can be, for example, an account for any asset, an address for asset management uniquely created from the public key, and the like.
  • the account may include, for example, a main account that the user mainly uses for transactions and asset management, and a backup account that serves as a backup destination for assets.
  • the main account and backup account in FIG. 1 may be, for example, simple information (address, account number, etc.) managed in the blockchain 120, and can perform processing such as asset transfer by the corresponding private key.
  • the user device 100 can manage the private key corresponding to the main account and the backup account by using a wallet application or the like.
  • the private key may be managed in any format, for example, stored on paper or an external medium such as a dedicated device.
  • the user device 100 can execute an arbitrary transaction.
  • the asset transfer permission transaction may include, for example, information on the asset transfer source account, the asset transfer destination account, the asset, and the execution account.
  • An execution account is an account that is authorized to move assets.
  • an asset transfer transaction may include information such as an asset transfer source account, an asset transfer destination account, and a predetermined transfer amount.
  • the user device 100 can also add a digital signature created using the user's private key to any transaction.
  • the user device 100 can also send any transaction to any other device.
  • the trustee device 110 is one or more devices operated by a trustee who receives a request for asset transfer from a user, and may be, for example, a smartphone, a tablet, a PC, a server, or the like.
  • the trustee may be the same as the user, may be a third party such as a financial institution or a service provider, or may be composed of a plurality of members.
  • the trustee device 110 is associated with a trustee account for executing an asset transfer transaction.
  • the trustee account can be authorized to perform asset transfer transactions or manage signed asset transfer transactions.
  • the trustee device 110 can also manage the private key corresponding to the trustee account.
  • the private key may be managed in any format, for example, stored on paper or an external medium such as a dedicated device.
  • the trustee device 110 can execute an asset transfer transaction that is permitted to be executed.
  • the trustee device 110 may give any transaction an electronic signature created using the private key of the trustee account.
  • the trustee device 110 for example, even when the trustee is the same as the user and the trustee device 110 is one of a plurality of user devices 100, the trustee device 110 is described in the present specification. It is described as 110.
  • the conventional transaction related to asset transfer was executed by the account of the asset transfer source or asset transfer destination or an unspecified third party.
  • the transaction of one embodiment of the present invention is different from the asset transfer source and the asset transfer destination, and the asset transfer transaction is executed by a third party account designated in advance.
  • the blockchain 120 is a decentralized network using blockchain technology, and methods and transactions such as transactions and application processing are executed and recorded by any kind of computer that is a network participant. When a transaction such as remittance is executed, the blockchain 120 can verify the electronic signature given to the transaction.
  • the blockchain 120 is described as a single blockchain 120 for the sake of simplicity, but the corresponding functions and processing methods differ depending on the platform such as Bitcoin and Ethereum.
  • the blockchain 120 corresponds to a smart contract when implemented on a platform such as Ethereum.
  • a smart contract is a program that can be executed in a distributed execution environment, and an address is given to the smart contract itself (contract address), and tokens can be held.
  • a token is a set of an address and a value issued by using blockchain technology, and can be used as a value exchange medium.
  • the blockchain 120 can include a ledger, a wallet, etc. associated with an account that manages assets.
  • the blockchain 120 can execute the asset transfer recorded in the ledger, the asset transfer between accounts, and the like in response to the execution of the asset transfer transaction.
  • Asset transfer is, for example, changing the owner of the asset recorded in the ledger from the account of the asset transfer source to the account of the asset transfer destination, moving the asset between wallets, or changing the mapping information of the asset of the wallet. And so on.
  • the user device 100 and the trustee device 110 can access the blockchain 120 via an arbitrary network such as the Internet, and can send and receive arbitrary data.
  • FIG. 2 is a diagram illustrating a backup processing flow according to an embodiment of the present invention.
  • the asset transfer source is the main account
  • the asset transfer destination is the backup account
  • the executor of the asset transfer transaction is the trustee account.
  • the blockchain 120 includes a smart contract (hereinafter, referred to as “token contract”) that manages the owner's address and token balance.
  • the token contract can manage an associated table (hereinafter referred to as "token ledger”) such that the token balance of the main account is 1,000, the token balance of the backup account is 0, and so on.
  • the user uses the user device 100 to execute an asset transfer permission transaction.
  • the asset transfer permission transaction includes information that gives the trustee account the authority to transfer a predetermined transfer amount (for example, 1,000), with the asset transfer source as the main account and the asset transfer destination as the backup account.
  • Asset transfer permission transactions are digitally signed using the private key corresponding to the main account.
  • the blockchain 120 verifies the electronic signature given to the transaction of the asset transfer permission.
  • the verification of the digital signature has the meaning of confirming whether the transaction of the asset transfer permission was created by a legitimate user.
  • the blockchain 120 records the permission information in the token contract based on the transaction of the asset movement permission.
  • the permission information includes information in which the asset transfer source is the main account and the asset transfer destination is the backup account, and the trustee account is authorized to transfer a predetermined transfer amount (for example, 1,000). Since the asset is not transferred at the recording stage, it is conceptually in the state of "remittance reservation".
  • S204 The user requests the trustee to move the assets when the private key corresponding to the main account is lost.
  • the request triggers user authentication (ID and password, etc.) to the authentication server, transmission of request message, notification, execution of arbitrary method, etc. using any method that can trigger asset movement, for example, user device 100. It can be implemented by.
  • the trustee account uses the trustee device 110 to execute an asset transfer transaction.
  • the asset transfer transaction includes information for transferring a predetermined transfer amount (for example, 1,000) with the asset transfer source as the main account and the asset transfer destination as the backup account.
  • the asset transfer transaction is digitally signed with the private key corresponding to the trustee account.
  • S206 The blockchain 120 verifies the electronic signature given to the transaction of asset transfer. Digital signature verification has the meaning of verifying whether the asset transfer transaction was performed by a legitimate trustee account.
  • the blockchain 120 executes the asset transfer process in response to the execution of the asset transfer transaction.
  • the asset transfer can be executed, for example, by subtracting 1,000 tokens from the balance of the main account recorded in the token ledger and adding 1,000 tokens to the balance of the backup account.
  • the user can transfer assets from the main account to the backup account.
  • the private key of the trustee account is leaked and an asset transfer transaction is executed by another person, the asset is only transferred from the main account to the backup account, and there is no risk of the user's asset being leaked. ..
  • FIG. 3 is a diagram illustrating a backup processing flow according to an embodiment of the present invention.
  • the asset transfer source is the main account
  • the asset transfer destination is the backup account
  • the executor of the asset transfer transaction is the trustee account.
  • wallet contract method a backup method when a wallet created by a smart contract (hereinafter referred to as “wallet contract”) is used in the blockchain 120 will be described.
  • the wallet contract is a smart contract that can hold tokens created by the smart contract and execute various processes in the blockchain 120, and has an address.
  • the wallet contract may also have a dedicated address (hereinafter referred to as "user account”) for the user to deposit and manage the assets, and manage the asset mapping information for each user account.
  • the wallet contract may enable asset transfer by changing the asset mapping information of the user account.
  • the mapping information can be changed, for example, by subtracting the balance of the asset of the asset transfer source and adding the asset balance of the asset transfer destination, or by changing the owner of the asset.
  • the user executes an asset deposit transaction using the user device 100.
  • the asset deposit transaction includes information for transferring a predetermined transfer amount (for example, 1,000), with the asset transfer source as the main account and the asset transfer destination as the wallet contract. Asset deposit transactions are digitally signed with the private key corresponding to the main account.
  • S302 The blockchain 120 verifies the electronic signature given to the asset deposit transaction. Digital signature verification has the meaning of verifying whether the asset deposit transaction was created by a legitimate user.
  • the blockchain 120 executes the asset transfer process in response to the execution of the asset deposit transaction.
  • the asset transfer process transfers 1,000 tokens held by the main account to the wallet contract.
  • the transferred tokens are managed by the user account of the wallet contract and are under the control of the user.
  • the user uses the user device 100 to execute a transaction for permitting asset movement.
  • the asset transfer permission transaction includes information that gives the trustee account the authority to transfer a predetermined transfer amount (for example, 1,000), with the asset transfer source as the wallet contract and the asset transfer destination as the backup account.
  • Asset transfer permission transactions are digitally signed using the private key corresponding to the main account.
  • the blockchain 120 verifies the electronic signature given to the transaction of the asset transfer permission.
  • the verification of the digital signature has the meaning of confirming whether the transaction of the asset transfer permission was created by a legitimate user.
  • the blockchain 120 records the permission information in the wallet contract based on the transaction of the asset transfer permission.
  • the permission information includes information in which the asset transfer source is a wallet contract, the asset transfer destination is a backup account, and the trustee account is authorized to transfer a predetermined transfer amount (for example, 1,000). Since the asset is not transferred at the recording stage, it is conceptually in the state of "remittance reservation".
  • S307 The user requests the trustee to move the assets when the private key corresponding to the main account is lost.
  • the request triggers user authentication (ID and password, etc.) to the authentication server, transmission of request message, notification, execution of arbitrary method, etc. using any method that can trigger asset movement, for example, user device 100. It can be implemented by.
  • the trustee account uses the trustee device 110 to execute an asset transfer transaction.
  • the asset transfer transaction includes information for transferring a predetermined transfer amount (for example, 1,000), with the asset transfer source as the wallet contract and the asset transfer destination as the backup account.
  • the asset transfer transaction is digitally signed with the private key corresponding to the trustee account.
  • the blockchain 120 verifies the electronic signature given to the transaction of asset transfer.
  • Digital signature verification has the meaning of verifying whether the asset transfer transaction was performed by a legitimate trustee account.
  • the blockchain 120 executes the asset transfer process in response to the execution of the asset transfer transaction.
  • the asset transfer can be performed, for example, by transferring 1,000 tokens from the wallet contract to the backup account.
  • Asset transfer may also be implemented by the wallet contract changing the owner of 1,000 tokens deposited from the main account to a backup account and later making it available from the backup account. That is, the asset transfer may be implemented by changing the owner of the asset (changing the mapping information) to the user account of the wallet contract associated with the backup account of the asset transfer destination.
  • the user can move assets from the main account to the backup account even if the private key is lost.
  • the private key of the trustee account is leaked and the transaction of asset transfer is executed by another person, the asset is only transferred from the wallet contract to the backup account, and there is no risk of the user's asset being leaked. ..
  • wallet contract method assets are moved from the wallet contract in the blockchain 120 to the backup account instead of the main account, or assets are moved between user accounts in the wallet contract.
  • a wallet application may be implemented to display that the asset has been transferred from the main account by associating a series of backup processes from the asset deposit transaction, standardizing the wallet contract method, and the like. ..
  • the wallet contract may have a one-to-one correspondence with a trustee account that can execute asset transfer transactions (dedicated smart contract).
  • the wallet contract may also centrally manage multiple main accounts, backup accounts, and trustee accounts.
  • FIG. 4 is a diagram illustrating a backup processing flow according to an embodiment of the present invention. Similar to FIGS. 2 and 3, the asset transfer source is the main account, the asset transfer destination is the backup account, and the executor of the asset transfer transaction is the trustee account.
  • the user creates a transaction for asset transfer using the user device 100.
  • the asset transfer transaction includes information for transferring a predetermined transfer amount (for example, 1,000) with the asset transfer source as the main account and the asset transfer destination as the backup account.
  • Asset transfer transactions are digitally signed using the private key that corresponds to the main account.
  • the user deposits the asset transfer transaction in the trustee account using the user device 100.
  • the transaction of asset transfer may be deposited in any format in which data can be transferred, and data may be transmitted to the trustee device 110 or transferred on a computer-readable medium such as a USB memory.
  • the trustee account may manage the transaction of asset transfer by the trustee device 110, an arbitrary dedicated device, etc., and after encrypting by the public key cryptosystem, manages the transaction of asset transfer in the blockchain 120. May be good.
  • S403 The user requests the trustee to move the assets when the private key corresponding to the main account is lost.
  • the request triggers user authentication (ID and password, etc.) to the authentication server, transmission of request message, notification, execution of arbitrary method, etc. using any method that can trigger asset movement, for example, user device 100. It can be implemented by.
  • the trustee account uses the trustee device 110 to execute an asset transfer transaction.
  • the asset transfer transaction includes information for transferring a predetermined transfer amount (for example, 1,000) with the asset transfer source as the main account and the asset transfer destination as the backup account. Execution of the asset transfer transaction may require a digital signature created using the private key corresponding to the trustee account.
  • S405 The blockchain 120 verifies the electronic signature given to the transaction of asset transfer. Digital signature verification has the meaning of verifying whether the asset transfer transaction was created and executed by a legitimate user.
  • the blockchain 120 executes the asset transfer process in response to the execution of the asset transfer transaction.
  • the asset transfer is performed from the main account to the backup account, and may be implemented by subtracting the assets of the main account, adding assets of the backup account, etc. in the ledger of the blockchain 120.
  • the user can move assets from the main account to the backup account even if the private key is lost.
  • the signed transaction cannot be tampered with, there is no risk of the user's assets being leaked, and the transaction deposited in the trustee account has no choice but to be executed or not executed.
  • the asset transfer transaction becomes invalid.
  • UTXO Unspent Transaction Output
  • the asset transfer transaction is consumed as an input, the already consumed UTXO becomes invalid.
  • serial numbers such as nonces, such as Ethereum
  • the nonces can be changed each time a transaction is created. After creating a transaction for asset transfer, if you execute a different transaction such as remittance if you do not execute it, the previously created (old nonce) asset transfer transaction becomes invalid.
  • the step of recreating the asset transfer transaction may include the step of recreating the asset transfer transaction each time a different transaction occurs after the asset transfer transaction is created.
  • the re-creation of the asset transfer transaction may be implemented so as to be automatically performed after the occurrence of a different transaction by a wallet application or the like installed on the user device 100.
  • the transfer of assets was described by the ledger of the blockchain 120 or the remittance between accounts, but when executed in an environment other than the blockchain 120, the transfer of assets may be implemented by a conventional database. That is, asset movement can be implemented by adding, updating, and deleting records in the database that manages the assets.
  • FIG. 5 is a diagram illustrating a general-purpose configuration of the user device 100 and the trustee device 110 according to the embodiment of the present invention.
  • the control unit 501, the main storage unit 502, the auxiliary storage unit 503, the communication unit 504, the operation unit 505, and the display unit 506 are connected by a bus 507 or the like.
  • the control unit 501 is a CPU, and can control each component of the system and calculate data.
  • the main storage unit 502 is a main memory, and can store input data, computer-executable instructions, and data after arithmetic processing by the instructions.
  • the auxiliary storage unit 503 is a storage device such as a hard disk, and is used for long-term storage of data and programs.
  • the control unit 501 can read the program stored in the auxiliary storage unit 503 into the main storage unit 502 and execute it.
  • the communication unit 504 is an interface for transmitting and receiving data to and from another system or device.
  • the operation unit 505 is composed of a keyboard, a mouse, a touch panel, and the like, and can receive various operations and input data of the application.
  • the display unit 506 is composed of a display or the like, and can provide various screens or the like of an application.
  • the assets transferred to the backup account may be transferred to the backup account.
  • the assets transferred to the main account in advance may be further implemented to be transferred to the backup account. ..
  • the transfer may be implemented, for example, by having the smart contract of the blockchain 120 hold a table in which the main account and the backup account are associated with each other, or by keeping the account of the asset transfer destination as the smart contract.
  • the present invention can adopt, for example, an embodiment as a system, an apparatus, a method, a program, a storage medium, or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Accounting & Taxation (AREA)
  • Physics & Mathematics (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Finance (AREA)
  • Health & Medical Sciences (AREA)
  • Bioethics (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Computer Security & Cryptography (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

Un mode de réalisation de la présente invention concerne un dispositif de traitement de sauvegarde d'actifs. Le procédé de traitement de sauvegarde d'actifs comprend les étapes suivantes, qui consistent à : exécuter une transaction d'autorisation de mouvement d'actif comprenant des informations relatives à un compte constituant l'origine du mouvement d'actif, à un compte constituant la destination du mouvement d'actif, à un actif et à un compte d'exécution ; enregistrer des informations d'autorisation d'enregistrement sur la base de la transaction d'autorisation de mouvement d'actif ; déclencher un mouvement d'actif ; exécuter la transaction de mouvement d'actif par l'intermédiaire du compte d'exécution ; et exécuter un processus de mouvement d'actif en réponse à l'exécution de la transaction de mouvement d'actif.
PCT/JP2020/026480 2019-07-05 2020-07-06 Procédé de traitement de sauvegarde d'actifs, et support d'enregistrement sur lequel un programme a été enregistré WO2021006251A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-126247 2019-07-05
JP2019126247A JP7262328B2 (ja) 2019-07-05 2019-07-05 資産のバックアップ処理方法およびプログラム

Publications (1)

Publication Number Publication Date
WO2021006251A1 true WO2021006251A1 (fr) 2021-01-14

Family

ID=74115050

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/026480 WO2021006251A1 (fr) 2019-07-05 2020-07-06 Procédé de traitement de sauvegarde d'actifs, et support d'enregistrement sur lequel un programme a été enregistré

Country Status (2)

Country Link
JP (1) JP7262328B2 (fr)
WO (1) WO2021006251A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017513095A (ja) * 2014-02-20 2017-05-25 シーエフピーエイチ， エル．エル．シー． 口座及び資金管理
JP2018511137A (ja) * 2015-04-05 2018-04-19 デジタル・アセット・ホールディングス デジタル資産仲介電子決済プラットフォーム
WO2018229608A1 (fr) * 2017-06-13 2018-12-20 nChain Holdings Limited Système et procédé mis en œuvre par ordinateur fournissant un protocole décentralisé pour la récupération d'actifs cryptographiques
WO2019101767A1 (fr) * 2017-11-21 2019-05-31 Sicpa Holding Sa Système et procédé permettant de commander des ressources numériques

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11144893B2 (en) 2017-10-30 2021-10-12 Nec Corporation Method and system for securing smart contracts in blockchains

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017513095A (ja) * 2014-02-20 2017-05-25 シーエフピーエイチ， エル．エル．シー． 口座及び資金管理
JP2018511137A (ja) * 2015-04-05 2018-04-19 デジタル・アセット・ホールディングス デジタル資産仲介電子決済プラットフォーム
WO2018229608A1 (fr) * 2017-06-13 2018-12-20 nChain Holdings Limited Système et procédé mis en œuvre par ordinateur fournissant un protocole décentralisé pour la récupération d'actifs cryptographiques
WO2019101767A1 (fr) * 2017-11-21 2019-05-31 Sicpa Holding Sa Système et procédé permettant de commander des ressources numériques

Also Published As

Publication number Publication date
JP7262328B2 (ja) 2023-04-21
JP2021012532A (ja) 2021-02-04

Similar Documents

Publication Publication Date Title
TWI736809B (zh) 資產管理方法及裝置、電子設備
CN108781161B (zh) 用于控制和分发数字内容的区块链实现的方法
TWI694709B (zh) 基於區塊鏈的電子簽名方法及裝置、電子設備
TW202001654A (zh) 基於區塊鏈的內容驗證方法及裝置、電子設備
WO2015116998A2 (fr) Système de transfert électronique et d'application d'obligations
CN114207643A (zh) 用于区块链经营的系统和方法
CN109003185B (zh) 一种智能合约的建立方法、装置、计算设备及存储介质
JP7304963B2 (ja) プログラム、データ認証方法、およびコンピュータ装置
JP6909532B1 (ja) トランザクション委任方法、及びトランザクション委任システム
KR20190132047A (ko) 스마트 컨트랙트를 이용한 블록체인 기반 서비스 플랫폼 제공 방법
EP3703306A1 (fr) Procédé d'enregistrement de données, procédé de décodage de données, structure de données, ordinateur, et programme
TW201843635A (zh) 基於區塊鏈智能合約的kyc資料共享系統及其方法
US20180287790A1 (en) Authentication of a transferable value or rights token
KR20190132054A (ko) 블록체인 기반 스마트 컨트랙트를 이용한 암호화폐 거래 플랫폼 제공 방법
TW201913529A (zh) 基於區塊鏈智能合約的函證系統及其方法
JP2022054439A (ja) 中央銀行デジタル通貨のための決済方法およびシステム
KR20190132160A (ko) 스마트 컨트랙트를 이용한 암호화폐 거래 플랫폼 제공 방법
CN110599176B (zh) 基于区块链的数据处理方法、装置、存储介质及节点设备
JP7254954B2 (ja) ブロックチェーンで生成されたデータを認証する方法およびシステム
CN110619566A (zh) 通过链上数字货币结算的链上质押资产返还系统和方法
WO2021006251A1 (fr) Procédé de traitement de sauvegarde d'actifs, et support d'enregistrement sur lequel un programme a été enregistré
JP2020046975A (ja) 仮想通貨の資金移動システムおよび方法
KR20200014121A (ko) 블록체인 서비스 제공 방법 및 시스템
JP2022151190A (ja) 業務監査支援システム及び業務監査支援方法
CN114631110A (zh) 使用区块链交易分配数字资产

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20836142

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20836142

Country of ref document: EP

Kind code of ref document: A1