Blockchain

PROCESSING A CONTINGENT ACTION TOKEN SECURELY

Resumen de: US2024333515A1

A method executed by a computing device includes selecting a contingency-action token (CAT) of an object distributed ledger that meets minimum CAT requirements. The method further includes determining reassignment information for the selected CAT. The method further includes facilitating taking control of the selected CAT of a blockchain of the object distributed ledger using a securely passing process and updating the selected CAT utilizing the reassignment information for the CAT to produce an updated CAT. The method further includes causing generation of a new block affiliated with the updated CAT via the blockchain of the object distributed ledger using the securely passing process, where the new block includes the updated CAT.

SYSTEMS, METHODS, AND DEVICES FOR SECURE BLOCKCHAIN TRANSACTION AND SUBNETWORKS

Resumen de: US2024333500A1

Provided herein is a system, device, method, and subnetwork for performing a secure blockchain transaction of a digital asset. The system includes a terminal for generating the blockchain transaction, the terminal configured to operate in a first mode and a second mode, and a switch connector for preventing the terminal from operating in the first mode and the second mode simultaneously. When the terminal is in the first mode, the terminal is connected via a network to a system provider server, the system provider server in communication with a plurality of blockchain devices. When the terminal is in the second mode, the terminal is in communication with a cold storage device. The cold storage device is configured to store a private key for signing the blockchain transaction. The terminal is configured to sign the blockchain transaction on the cold storage device using the private key.

ENFORCING CONDITIONS ON BLOCKCHAIN TRANSACTIONS

Resumen de: US2024333503A1

A computer-implemented method of enforcing conditions on a second blockchain transaction using a first blockchain transaction, wherein a first one of the conditions is that, when a first unlocking script of the second transaction is executed alongside a first locking script of the first transaction, a representation of the second transaction is output to memory, wherein the representation is based on a plurality of fields of the second transaction and a first output of the first transaction, and wherein the method comprises: generating the first transaction, wherein the first transaction comprises a first output, wherein the first output comprises the first locking script, and wherein the first locking script comprises: a message sub-script; a signature sub-script; a public key corresponding to a private key; and a verification sub-script.

METHODS PERFORMED BY A COMPUTING DEVICE

Resumen de: WO2024199871A1

A method performed by a computing device, the method comprising: transmitting a data distribution control message to a node of a blockchain network, the data distribution control message indicating that data in a transaction of a plurality of transactions, stored by the node and associated with a blockchain, should not be distributed by the node; receiving, from the node, a zero knowledge proof proving removal of the data from the transaction in compliance with the data distribution control message; generating a recordal transaction, the recordal transaction comprising evidence of removal of the data from the transaction in compliance with the data distribution control message; and transmitting the recordal transaction to the node for committal to the blockchain.

BLOCK PRODUCTION

Resumen de: WO2024199877A1

A method performed by a node in a blockchain network, the method comprising: determining if a number of transactions in a set of validated transactions is above a first threshold; when the number of transactions in the set of validated transactions is above the first threshold, performing computations to include the set of validated transactions in a blockchain.

DECENTRALIZED CONSENSUS NETWORK

Resumen de: US2024333538A1

The decentralized processing system can identify zero or more cryptographic commitments to update a state of the blockchain recorded on the blockchain. The system can receive an indication to update the state of the blockchain. In response, the system can transmit to a decentralized consensus network (DCN) instructions for the DCN to compute a subsequent state. The system can receive, from the DCN, a first cryptographic hash associated with a data structure which is determined based on the computed subsequent state. The system can receive, form an implementation keeper a series of data entries associated with the data structure. A second cryptographic hash can be computed for each of the series of data entries and the system can determine whether each second cryptographic hash matches the first cryptographic hash. The system can execute instructions contained within each of the series of data entries to evolve the state of the blockchain.

METHOD AND SYSTEM OF STORING SMART CONTRACT EVENTS

Resumen de: US2024333523A1

A method for distributing event data for smart contracts executed on a blockchain to subscribing systems includes: collecting, by a processor of a blockchain node in a blockchain network, a set of event data emitted by a smart contract executed on a blockchain associated with the blockchain network; identifying, by the processor of the blockchain node, communication data for one or more subscriber computing systems; and after a predetermined period of time, transmitting, by a transmitter of the blockchain node, the collected event data to each of the one or more subscriber computing systems using the communication data.

AUTHENTICATED CROSS-SUBNET COMMUNICATION

Resumen de: US2024333521A1

Various aspects of the subject technology relate to systems, methods, and machine-readable media for cross-chain communication in a blockchain platform. Various aspects may include accepting, at a first blockchain, a first transaction including a message and a message payload. Aspects may also include validating, at the first blockchain, the message by signing the message using signature keys of one or more validators in a first set of validators of the first blockchain. Aspects may also include generating an aggregate signature based on the signature keys of the one or more validators in a first set of validators. Aspects may also include submitting a second transaction on to a second blockchain, the second transaction including the message and the aggregate signature. Aspects may include validating, at the second blockchain, the second transaction based on a shared registry.

COMPUTER-IMPLEMENTED SYSTEMS AND METHODS FOR USING A BLOCKCHAIN TO PERFORM AN ATOMIC SWAP

Resumen de: US2024333474A1

A computer-implemented exchange method is provided. The method may be performed on one or more blockchains. The method comprises communicating a first veiled secret value (H(A0)) from a first user to a second user and a second veiled secret value (H(B0) from the second user to the first user; and constructing first and second blockchain transactions (tx1, tx2) each comprising the first veiled secret value and the second veiled secret value, the transactions arranged to be unlockable to transfer control of a respective first or second resource upon provision of both the first secret value (A0) and the second secret value (B0) to the respective blockchain transaction, wherein unlocking of the first blockchain transaction causes a first secret value to be revealed to the second user, and unlocking of the second blockchain transaction causes a second secret value to be revealed to the first user.

Blockchain-Based Traceability System and Method

Resumen de: US2024333509A1

Provided is a computer implemented method of providing a blockchain based traceability service. The method comprises, for each secret from a set of secrets associated with respective ones of a set of parameters for a traceable item, generating a proof to provide a set of proofs. The method includes generating a ciphertext based on a public data encryption key from a set of public data encryption keys associated with said parameters for the traceable item, and information of said traceable item. The preceding step is repeated for each pair of identifier and public data encryption key. The method involves uploading to the blockchain the generated ciphertext, the respective identifier, a hash value of the respective secret, and the respective proof for each parameter of the traceable item, verifying in the blockchain the set of uploaded proofs, and storing verified data in the blockchain.

Combined Cryptographic Key Management Services for Access Control and Proof of Space

Resumen de: US2024333496A1

A security server storing a plurality of cryptographic keys to support device authentication, access control and proof of space plot farming. The cryptographic keys can include a first cryptographic key representative of an identity of a memory device, a second cryptographic key representative of a privilege to access a memory region in the memory device, and a third cryptographic key representative of a pool of proof of space plots. The security server can sign blocks in a blockchain created via plots in the pool, sign commands to access the memory region, and secure transfer of the second and/or third cryptographic key to the computer operated by an owner of the memory device.

MULTIPLE ENCRYPTION DATA STORAGE AND RETRIEVAL SYSTEM

Resumen de: US2024333489A1

A computer system and method for storage and retrieval of multiple encrypted data. The system and method allow a user to first encryption data with a first key only held by the user such that the user solely possesses one of the necessary keys for later decryption of the stored and encrypted data. The firstly encrypted data is then doubly encrypted and stores the data in such a secure manner that the data can be stored on a public blockchain architecture, if desired. Full decryption of the original user data can only be performed with access to the user's initial key.

METHOD AND SYSTEM FOR MANAGING ANONYMIZED DATA USING BLOCKCHAIN NETWORK

Resumen de: EP4440027A1

This disclosure relates to a method and a system for managing anonymized data across computing devices in a blockchain network. The method includes generating the blockchain network including a blockchain ledger based on a dataset associated with each of a plurality of end users. The method of generating the blockchain network includes constructing the blockchain ledger corresponding to the dataset associated with each of the plurality of end users; generating a unique ledger key corresponding to the dataset associated with each of the plurality of end users; and storing the dataset associated with each of the plurality of end users in the blockchain ledger based on the unique ledger key. The method further includes communicating a joining request to a second computing device for joining the blockchain network. The method further includes granting access to the second computing device to the dataset associated with the plurality of end users.

BLOCK CHAIN TRANSACTION REBROADCAST

Resumen de: MX2024006427A

Certain aspects of the present disclosure provide techniques for reliable cryptocurrency rebroadcasting. According to certain embodiments, after an initial transaction broadcast disclosed systems listen to a blockchain to determine if the transaction was included in the blockchain. If, after a short time period, the transaction is not confirmed, a transaction database record for the transaction is locked to prevent inadvertent rebroadcast. While the record is locked, the transaction format and replay information are verified, and depending on the blockchain, is updated. For blockchains having a transaction fee, the system reviews recent transactions to determine appropriate fees and if needed, updates the transaction fee accompanying the transaction. Once the replay information is verified/updated, and the transaction fee is sized appropriately, the database record is unlocked and the transaction is rebroadcasted.

METHODS AND SYSTEMS FOR SYNCHRONIZING A DEVICE WITH A BLOCKCHAIN

Resumen de: WO2023094451A1

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.

BLOCKCHAIN TRANSACTION SAFETY USING SMART CONTRACTS

Resumen de: EP4439431A2

A method includes acquiring, at a node server, blockchain data for a blockchain address on a blockchain network. The blockchain data includes a plurality of transactions for the blockchain address. The method includes generating a local node trust score for the blockchain address based on the blockchain data. The local node trust score indicates a likelihood that the blockchain address is involved in fraudulent activity. The method includes receiving, from a plurality of remote servers, a plurality of additional local trust scores for the blockchain address. The method includes determining a consensus trust score based on the local node trust score and the plurality of additional local trust scores. Additionally, the method includes monitoring a ledger on the blockchain network for a contract trust request that specifies the blockchain address and sending, to the blockchain network, the consensus trust score for the blockchain address specified in the contract trust request.

Block production

Resumen de: GB2628541A

A method performed by a node in a blockchain network comprising determining if a number of transactions in a set of validated transactions is above a first threshold and, if so, performing computations to include the set of validated transactions in a blockchain. The computations/ mining strategy may be performed at a hash-rate which may be based on the number of validated transactions. The hash rate may increase linearly or non-linearly with the number of transactions. The hash rate may follow a sawtooth or start-stop strategy to save energy. The nodes in the network may comprise rechargeable batteries that may be charged (e.g. by green energy) when the set of validated transactions are below the threshold. An apparatus having a processor with instructions to execute the method. Computer equipment for carrying out the method. A computer program for carrying out the method.

MANAGEMENT DEVICE

Resumen de: EP4439416A1

A management device includes: a blockchain (11) that records transaction data of material of a product; a variation range registrar (13) that registers data on a variation range of a weight of material allowed in a transaction process to the blockchain; and a transaction data registrar (12) that receives input of data regarding a transaction including data on the weight of material and registers the data of transaction to the blockchain.

TRUSTED ATTESTATION METHOD AND COMMUNICATION APPARATUS

Resumen de: EP4440032A1

A trusted attestation method and a communication apparatus are provided to improve running efficiency of remote attestation of trusted computing. The method is as follows: A first node obtains information about a first blockchain, and the first node determines attestation information based on the information about the first blockchain. The attestation information is used to remotely attest whether the first node is trusted. The information about the first blockchain may be used as a common random number that is generated by the first blockchain based on a consensus and that can be used by a plurality of nodes. Therefore, the information about the first blockchain may be used as a challenge value for performing security measurement by the plurality of nodes. The attestation information may be verified by any verifier to implement measurement for one time and verification for a plurality of times, so that the first node does not need to establish a separate "challenge-response" procedure with each verifier. In this way, expansion of trusted measurement can be improved, running efficiency of remote attestation can be improved, and verification requirements of massive devices in a high-concurrency and low-latency application scenario can be met.

BLOCKCHAIN FOR ACCESS CONTROL

Resumen de: US2024267381A1

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.

Outsourcing computations using blockchain

Resumen de: GB2628626A

Outsourcing a computation using a blockchain, includes obtaining one or more respective secondary computations, wherein each respective secondary computation is based on a respective part of a primary computation and a respective verification algorithm. Executing each respective secondary computation with a respective input generates a respective result of the respective part of the primary computation and a respective verification output of the respective verification algorithm. Obtaining a plurality of respective inputs to the primary computation and for each respective secondary computation generating a respective outsourcing transaction. The respective outsourcing transaction is locked to a respective locking value based on the respective verification output. Making the respective outsourcing transaction available to a respective computing party and making both the respective secondary computation, or an encrypted version thereof, and the respective input, or an encrypted version thereof, available to the respective computing party.

BLOCKCHAIN-BASED DIGITAL SIGNATURE SECURING METHOD

Resumen de: EP4440036A1

Die Erfindung betrifft ein Verfahren zur blockchain-basierten Sicherung von digitalen Signaturen. Das Verfahren umfasst ein Bereitstellen einer Blockchain (110) und ein Empfangen einer Eintragungsanfrage zur Eintragung eines Hashwerts (136) einer mittels der Blockchain (110) zu sichernden digitalen Signatur (134). Ferner umfasst das Verfahren ein Erstellen eines zusätzlichen Blocks (106) für die Blockchain (110), in welchen der empfangene Hashwert (136) der zu sichernden Signatur (134) eingetragen wird, und ein Hinzufügen des zusätzlichen Blocks (106) mit dem empfangenen Hashwert (136) der zu sichernden Signatur (134) zu der Blockchain (110).

BLOCKCHAIN-BASED MICROGRID OPERATION OPTIMIZATION METHOD

Resumen de: KR20230108970A

A method for optimizing a microgrid operation based on a multi-agent system, which optimizes power management and improves security, comprising: a step in which a microgrid provides power consumption data for a preset period to a cloud energy management system (EMS); a power setting step in which the microgrid receives the power consumption data of the microgrid for the preset period, separates and stores the power consumption data, and transmits the same to the cloud EMS; a step in which the cloud EMS transmits power management control data calculated based on the power consumption data to a microgrid fog EMS; a step in which the microgrid fog EMS receives the power management control data and distributes the control data to each of control agents; a step in which a public fog EMS adds control agents at the request of the microgrid fog EMS; a step in which the microgrid fog EMS and the microgrid corresponding to the microgrid fog EMS exchanges data; and a step in which the microgrid is controlled by respective control data received from the cloud EMS and the microgrid fog EMS.

SYSTEM FOR PROVIDING BLOCKCHAIN-BASED MYDATA CARD

Resumen de: KR20240142184A

블록체인 기반의 마이데이터카드 제공 시스템이 개시된다. 본 발명의 일 측면에 따르면, 사용자 단말로부터 사용자의 개인 기본 정보 및 개인 상세 정보를 포함하는 사용자 정보를 제공받고, 사용자 단말로부터 정보 활용 동의를 받아 외부 API를 통해 사용자의 정보를 제공받아 마이데이터를 생성하는 마이데이터 생성부, 마이데이터를 블록체인 상에 분산하여 암호화하는 데이터 암호화부, 사용자 단말의 요청에 따라 소속 기관 단말의 동의를 받아 블록체인 기반의 분산 식별자를 이용하여 소속 기관에 소속됨을 증명하는 사용자 단말에게 전자 신분증을 발급하고, 사용자 단말에게 발급된 전자 신분증을 관리하는 전자 신분증 관리부 및 열람자 단말의 요청에 의해 사용자 단말의 동의를 받아 암호화된 마이데이터를 복호화하여 열람자 단말에게 제공하는 정보 제공부를 포함하는 블록체인 기반의 마이데이터카드 제공 시스템이 제공된다. 본 발명은 서울특별시 서울산업진흥원 2022년도 핀테크·블록체인 기술사업화 지원사업(FB220003) " 블록체인 기술을 활용한 기술·경영 전문가 마이데이터 디지털 카드"를 통해 개발된 기술이다.

AN APPARATUS FOR GENERATING COPYRIGHT CERTIFICATION BASED ON BLOCK-CHAIN AND A METHOD TEHREOF

Nº publicación: KR20240141904A 30/09/2024

Solicitante:

주식회사엠프티코퍼레이션