Resumen de: US2023164145A1

A method of using a blockchain in an access control environment according to one embodiment includes transmitting, by a mobile device, a request to access a passageway secured by a lock device to a first node device, wherein a plurality of node devices including the first node device store the blockchain, receiving, by the mobile device, a lock-specific access token from one of the plurality of node devices in response to validation of a blockchain transaction associated with the request received from the mobile device by the plurality of node devices, transmitting, by the mobile device, the lock-specific access token to the lock device, receiving, by the mobile device, a verification message from the lock device in response to successful authentication of the lock-specific access token, and transmitting, by the mobile device, a notification of verification to the first node device to amend the blockchain.

Resumen de: US2023164207A1

The present invention relates to systems and methods suitable for verifying and compensating nodes for streaming multimedia. In particular, the present invention relates to systems and methods that utilize a blockchain to verify and compensate devices for computational resources contributions when streaming multimedia over a decentralized network.

Resumen de: US2023163963A1

Disclosed herein is a method for selecting a consensus node in an apparatus for generating a blockchain. The method may include reading a nonce from the nonce chain of a node, performing an operation on the read nonce and previous height information, and comparing the result of the operation with a reference value in order to select the node as a consensus node.

Resumen de: US2023163982A1

An electronic device may include a memory storing a partial ledger including a part of a full ledger for a blockchain network, and at least one processor configured to generate an ending block as a block chained after the transaction block. The ending block includes an ending hash value of a transaction block and signature data and the signature data includes the ending hash value signed with a private key. The ending block may be chained after the transaction block. The ending block may be stored in the memory.

Resumen de: US2023163981A1

Systems and methods for providing additional security for quick response (QR) codes are provided. An additional layer of security for QR codes, a mechanism to record the reputation of the payload in a QR code, and other functionality are provided. A combination of a public blockchain system, public key encryption, and a redirection mechanism can be used.

Resumen de: US2023163957A1

Described are techniques for securing a most recent block in a data structure such as a blockchain. Techniques include configuring a data processing node that is deployable to a physical location, with a module that generates a verification signing key (VSK) pair, the VSK pair including a private VSK key that is known only to the data processing node, and a public VSK key, receiving by the data processing node, an indication of the deployment to the physical location, generating in response to the indication, by the data processing node the verification signing key (VSK) pair, and transmitting from the data processing node the public VSK key to one or more electronic devices. These techniques assure to a high degree that the generated private key remains unknown and thus can be used to secure the most recent block that is added to a data structure such as a blockchain.

Resumen de: US2023163950A1

An improved data structure approach, and corresponding computational systems and methods are described to provide a technical approach that can be used for improving computational performance where a blockchain data structure is being accessed continuously or periodically for validation of recordals of one or more events that have taken place. A hybrid off-chain (or off-contract)/on-chain solution is utilized to provide a mechanism for establishing data linkages between the off-chain (or off-contract) records and on-chain data payloads.

Resumen de: US2023163948A1

A computer-implemented method that may be implemented using a blockchain network including monitoring a computational task distribution system to detect a challenge to a proposer string provided by a proposer computer system in response to a request made by a requester computer system, and as a result of detecting the challenge, at least: resolving the challenge using a first blockchain network by at least selecting a solution from a set of solutions provided to the first blockchain network, the set of solutions at least including the proposer string; and distributing digital assets from the first digital asset and the second digital asset to one or more parties of the computational task distribution system based at least in part on the solution.

Resumen de: US2023163947A1

A method and system are disclosed to audit smart contracts. The method includes: publishing, with a processing server, a smart contract bytecode with metadata on a blockchain; retrieving, with the processing server, the published smart contract bytecode with metadata from the blockchain; extracting, with the processing server, the smart contract bytecode from the published smart contract bytecode; and verifying the smart contract bytecode by comparing a computed hash of a high-level source code of the published smart contract bytecode with the metadata retrieved from the blockchain.

Resumen de: WO2023091082A1

A transaction processing method comprises: receiving a transaction initiation request for a payment transaction involving a plurality of transaction parties; generating a smart contract instance for the payment transaction and storing the smart contract instance in a smart contract on a blockchain, the smart contract having a plurality of conditions which must be fulfilled prior to execution of the payment transaction, wherein the plurality of conditions comprises transaction party conditions which must be fulfilled by respective transaction parties from the plurality of transaction parties; for each transaction party condition of the transaction party conditions: sending a message to a respective transaction party corresponding to the transaction party condition; receiving a response from the respective transaction party indicating that the respective transaction party condition has been fulfilled; and updating the smart contract to indicate that the respective transaction party condition has been fulfilled; in response to determining that each condition of the plurality of conditions has been fulfilled, sending a transaction execution message to a transaction execution party of the plurality of transaction parties to execute part of the payment transaction; receiving a transaction execution response from the transaction execution party indicating that a part of the transaction has been executed; and updating the smart contract to indicate that the part of the transaction ha

Resumen de: EP4184856A1

A method comprising, at a node of a blockchain network: obtaining a first transaction including runnable code specifying a reference instance of an r-part of ant ECDSA signature; receiving a second transaction including information comprising at least an s-part of the ECDSA signature, and obtaining a public key wherein the ECDSA signature signs a message based on a corresponding private key; and running the code from the first transaction, the code being configured to return a result of true, irrespective of whose private key was used as the first private key, on condition that: the ECDSA verification function, as applied to the ECDSA signature, verifies that the s-part received in the second transaction corresponds to the reference instance of the r-part specified by the first transaction, given the message received in the second transaction and the obtained first public key.

Resumen de: EP4184410A1

The invention provides a generic operating system for coordinating, controlling and/or influencing the activities of a device. The invention is implemented using a blockchain platform with which the operating system is arranged to interact. The blockchain may be the Bitcoin blockchain. In a preferred embodiment, the device is an Internet of Things (IOT) device. The invention provides a computer-implemented control system and corresponding method for controlling a device, the system comprising a device configured for wireless communication with a network and having an IP address and a public-private key cryptographic key pair associated with the device; a software-implemented control component arranged to monitor the state of a blockchain network and/or transmit blockchain Transactions to the blockchain network; and a set of instructions arranged for execution by the control component to control the functionality of the device. The control component is arranged to access the set of instructions from a stored location which is separate to the device. The instructions may be stored in a Distributed Hash Table (DHT) and accessed for download and installation by the control component from the DHT as and when needed. The location of the DHT and/or instructions may be indicated or provided using metadata provided within a blockchain transaction. The set of instructions may be accessed by the control component using a look-up key which is related to a cryptographic key pair. The cont

Resumen de: EP4184405A1

There may be provided a computer-implemented method. It may be implemented using a blockchain network such as, for example, the Bitcoin network. The computer-implemented method includes: i) receiving, at a node in a blockchain network, a first transaction associated with a digital asset, the first transaction specifying at least: a) a first set of constraints on a second transaction to transfer control of the digital asset, the first set of constraints including one or more constraints that cause the second transaction to contain a set of data from the blockchain network; and b) a second set of constraints on the second transaction, the second set of constraints including a constraint that the set of data includes a block that includes the first transaction, the block included in a blockchain associated with the blockchain network; ii) verifying that the first set of constraints and the second set of constraints are satisfied; and iii) transferring control of the digital asset based at least in part on the verifying.

Resumen de: GB2599400A

A method for enabling a verifying party to verify an identity of a target party or device. The method comprises, in a set-up phase (702): inputting of each of a set of one or more challenges into a PUF module associated with the target party and comprising a physically unclonable function (PUF), to generate a respective one of a set of responses from each challenge (710); and causing to be stored, on a blockchain, a respective piece of response data for each of the set of one or more responses generated by the PUF module (720). The piece of response data for each response comprises the respective response or data derived therefrom. The pieces of response data are stored in one or more storage transactions recorded on the blockchain, thereby making at least one of the pieces of response data available (730) to the verifying party for verifying the identity of the target in a subsequent verification phase (704). Instead of storing the actual responses, the record could include an attestation of the response e.g. a signed hash, or a public/private key pair generated from the response.

Resumen de: EP4184360A1

A method of synchronizing a device with a blockchain includes: receiving information about a first state of a blockchain; generating an RF broadcast signal encoding the information about the first state of the blockchain; and transmitting, at a first time, the first broadcast signal to the device. Similar methods for maintaining synchronization and for writing new data to a blockchain are also provided, as well as corresponding devices.

Resumen de: EP4184863A1

A system for providing a client device in a remote location secure access to the internet via a satellite connection is provided includes: a client device; a satellite system configured to provide the client device with access to the internet; and an internet service provider (ISP), wherein, during a registration process: the satellite system is configured to receive a first blockchain state signal which encodes information about a first state of a blockchain, and to generate and transmit a first RF broadcast signal encoding the information about the first state of the blockchain; the client device is configured to receive the first RF broadcast signal, to generate a registration request based on the information about the state of the blockchain, the registration request including a public key ID associated with the client device, and to be transmitted to an electronic address corresponding to a blockchain associated with the ISP, and to transmit the registration request to the satellite system; the satellite system is configured to receive the registration request, and to transmit it to the electronic address associated with the ISP; the ISP is configured to determine whether the registration request is a valid request, and if the registration request is a valid request, to add the public key ID to an authorized list, wherein when a public key ID is on the authorized list, the client device or user thereof is permitted to access the internet via the satellite system. Similar

Resumen de: EP4184404A1

There may be provided a computer-implemented method. It may be implemented using a blockchain network such as, for example, the Bitcoin network. The computer-implemented method includes: i) receiving, at a node in a blockchain network, a first transaction associated with a digital asset, the first transaction including a first script that specifies a set of constraints on a second transaction to transfer control of the digital asset, the set of constraints including a constraint that a set of data obtained by the node includes information obtained from a blockchain associated with the blockchain network; ii) obtaining the second transaction, the second transaction including a second script that, as a result of being executed, causes the node to obtain the set of data; and iii) validating the second transaction by executing the first script and the second script.

Resumen de: WO2023085490A1

The present invention relates to a biodata mediation system and method using an NFT. The purpose of the present invention is to convert biodata into an NFT together with ownership information, transaction log information, or the like in an institution or personal terminal, register the NFT in a blockchain, and manage and mediate same. To this end, the present invention comprises: an NFT conversion module installed and driven in each institution or personal terminal that supplies an NFT; a blockchain management server that manages NFTs distributed and stored in a blockchain network; and a mediation server that mediates registration or certification of or demand for an NFT among an NFT supply institution or individual, an NFT demand institution or individual, and the blockchain management server. Therefore, the present invention enables: the standardization of distribution of biodata between institutions or between an institution and an individual; clear tracking of history of handover or trading, transfer or inheritance, or the like; and the transparency of profit distribution.

Resumen de: WO2023083449A1

In an embodiment, a method (300) is described. The method facilitates communications in a computing network (100) between a first computing device (108a) associated with an owner (106a, 212a) of a first asset (210a) and a second computing device (108b) associated with an owner (106b, 212b) of a second asset (210b). A first identifier (204a) is associated with the first asset. A second identifier (204b) is associated with the second asset. A blockchain (104, 200) accessible to the computing network is indicative of: an association (208a) between the first identifier and the owner of the first asset; and an association (208b) between the second identifier and the owner of the second asset. The method comprises determining (302) whether a communications channel (430) between the first computing device and the second computing device can be established for facilitating communications in the computing network by using the blockchain to verify that the first computing device is associated with the owner of the first asset and the second computing device associated with the owner of the second asset. If this is verified, the method further comprises causing (304) the communications channel to be established between the first computing device and the second computing device for facilitating the communications.

Resumen de: WO2023085725A2

Disclosed are a method for managing carbon emissions using a blockchain and a system therefor. A method for managing carbon emissions according to one embodiment may comprise the steps of: registering design data on a computer aided design (CAD) system for production; analyzing production factor data on the basis of the registered design data; generating a bill of distribution (BOD) for supplying materials, on the basis of the design data and the production factor data; registering the generated BOD on a blockchain for carbon disclosure; generating a bill of material (BOM) for production management on the basis of the design data; and registering the generated BOM on the blockchain.

Resumen de: WO2023085115A1

[Problem] To provide a secure product appraisal certification system with which highly reliable appraisal certification can be carried out. [Solution] A hashed identifier individually assigned to a product 5 requiring appraisal is generated on the basis of digital property data of the product requiring appraisal, a non-fungible token (NFT) of the product 5 requiring appraisal, which is linked to the generated identifier, is recorded in a blockchain, and a generated transaction hash or a two-dimensional code in accordance therewith is output, and each time ownership of the product 5 requiring appraisal is transferred, a first blockchain wallet address of the owner to whom the transfer has been made is recorded in association with the NFT.

Resumen de: WO2023084816A1

[Problem] To provide a product authentication certification system that can certify authentication in a firm and highly reliable manner. [Solution] The product authentication certification system is characterized by comprising: a distribution type file server 3 that registers digital image data of authentication requiring products 5 by associating the image data with incidental information thereof and that generates, on the basis of the registered digital image data and the incidental information, hashed identifiers individually assigned to the authentication requiring products 5; and a dedicated platform 8 that records, on a blockchain, non-fungible tokens (NFT) associated with the identifiers generated by the distribution type file server 3 and that outputs generated transaction hashes or two-dimensional codes corresponding to the hashes.

Resumen de: WO2023082903A1

Disclosed are a method for detecting a malicious node in a block chain and a block chain. The method comprises: a notary node acquires an authenticated verification message, a first verification message from a first sending node, a second verification message from a second sending node and a third verification message from a receiving node; and the notary node determines a malicious node among the receiving node, the first sending node and the second sending node according to the authenticated verification message, the first verification message, the second verification message and the third verification message. When the method is used in Fintech, the malicious node among the receiving node, the first sending node and the second sending node may be determined by verifying the consistency relationship between a ciphertext message declared by each node and an authenticated ciphertext message.

Resumen de: WO2023082798A1

A consortium blockchain system-based service processing method and apparatus. A consortium blockchain system comprises a plurality of nodes, each node is provided with a service system, the service system provides a plurality of service functions, each service function is provided by means of a set number of nodes, and the nodes communicate with each other on the basis of a consensus mechanism. The method comprises: when determining that a service function to be executed of a transaction is a first transaction function which can be provided by a first node, the first node processes the transaction on the basis of the first transaction function to obtain a processing result, and reaches consensus with regard to the processing result among the nodes; and when determining, on the basis of the processing result, that the service function to be executed of the transaction is a second transaction function which can be provided by a second node, the second node processes the transaction on the basis of the second transaction function to obtain a processing result, and reaches consensus with regard to the processing result among the nodes until consensus with regard to a processing result for the last transaction function in the transaction is reached among the nodes. The method is used for reducing the working pressure of functional modules and improving service processing efficiency.

Resumen de: WO2023082522A1

The present invention provides a blockchain-based full life cycle assessment (LCA) data system and a control method therefor. The data system comprises a data module, a network module, and a terminal module; the network module performs data interaction with a full LCA blockchain; the data module comprises an application server, at least one management server, and a plurality of database servers; the terminal module comprises a management system terminal about full LCA data; the management system terminal establishes a communication connection with the application server; and the network module establishes a communication connection with the management system terminal by means of the Internet and is configured to update and store the full LCA data. According to the data system provided by the present invention, the blockchain is combined with LCA, such that the openness of a public chain is reserved, and the security of an alliance chain is also considered. On the basis of realizing the openness, transparency, and security of the full LCA data system, the operation speed of the data system is ensured.