Absstract of: US2022309477A1

The present invention provides a method for issuing an electronic voucher, the method comprising: (a) a step in which a server checks whether or not (i) electronic voucher data, (ii) a public key of a specific issuer and (iii) a signature value of the specific issuer are valid; and (b) a step in which, if the validity check result is positive, the server registers or supports the registration of a function value associated with (i) the electronic voucher data, (ii) the public key of the specific issuer and (iii) the signature value of the specific issuer in a blockchain network, and acquires or supports the acquisition of Txid indicating information on the location of the function value, registered in the blockchain network.

Absstract of: US2022311755A1

A method for privacy control in release of protected information includes: storing, in a memory of a first computing system, a plurality of data pairs, each of the plurality of data pairs including at least a decryption key and a registration identifier; receiving, by a receiver of the first computing system, a data request, the data request including at least a user identifier of a user associated with the data being requested in the data request; receiving, by the receiver of the first computing system, a registration identifier of the data being requested in the data request; identifying, by a processor of the first computing system, a data pair based on the registration identifier; and transmitting, by a transmitter of the first computing device, a decryption key of the identified data pair to a second computing system.

Absstract of: US2022309504A1

A computer-implemented method of generating a transaction for a blockchain, the transaction being for transferring an amount of a digital asset from a first party to a second party. The method comprises generating a first transaction comprising an output locking the amount of the digital asset, the output comprising an output script comprising a plurality of criterion components each requiring a respective input data item, and a plurality of counter script components. Each criterion component is associated with one of the counter script components. The output script is configured so as to, when executed alongside an input script of a second transaction, i) increment a counter each time a respective criterion component is satisfied by a respective input data item of the input script, and ii) to require the counter to increment to at least a predetermined number in order to be unlocked by the input script.

Absstract of: US2022309503A1

A request processing system uses Iframes and in particular, nested Iframes to provide an isolated environment where various forms of user requests can be processed for different clients within one outer Iframe that can be re-instantiated across various client web applications. A user request can include a payment made using a cryptocurrency against the user's blockchain wallet. The request processing system can employ persistent authorization storage to allow users to authenticate themselves for future requests without further involving themselves (e.g., exposing their private key to authenticate themselves). The request processing system utilizes nested Iframes to promote security among simultaneously processed requests. Each nested Iframe can perform operations that are isolated from other nested Iframes. Thus, different merchants that run on respective nested Iframes are prevented from communicating to one another, preventing a given merchant from spoofing requests against some other merchant's account for that user.

Absstract of: US2022309490A1

The systems and methods on a blockchain platform for one or more intermediaries for services including proxy re-encryption, independent audit, multiple-signatures based smart wallet associated with a smart contract and split-key authentication to achieve secure passwordless login. Proxy re-encryption by receiving a ciphertext from a first user with condition parameters that has been encrypted with a dynamically selected encryption algorithm. Audit service receiving an encrypted file from a user for storage on the blockchain platform; enforcing the security policy parameters for all access requests to the file on the blockchain platform; and optionally providing audit report of the encrypted file storage and access. A smart wallet with a group key using multiple signatures based on receipt of a threshold number of signatures. Split-key authentication by splitting the private key into two or more parts; and assigning the split private key part to two or more client devices.

Absstract of: US2022309080A1

The present invention relates a method for high-performance traceability query oriented to multi-chain data association, comprising: identifying a target transaction needing the traceability query; searching out all corresponding target chains based on cross-chain transaction data association; making query requests parallelly; and executing the query among the target chains according to a key value of the target transaction and returning query results. The blockchain traceability query method proposed by the present invention is different from serialized block data query conducted in the chain-type structure, and the disclosed cross-chain query operation can be parallelly executed, leading to improved efficiency of traceability query. Opposite to the conventional blockchain where blocks are used as nodes of chains, the present invention directly uses sub blockchains as nodes of the SRB. Since sub blockchains can be dynamically added or removed, the present invention enhances the scalability of the entire system.

Absstract of: US2022309501A1

The present disclosure relates to a blockchain-based trusted transaction method for a data product, including identity authentication based on a blockchain, creation of an identity code for a data asset, transaction of data, uploading of an enterprise authorization letter to the blockchain, and generation of a data right-confirmation letter. The present disclosure can build a trusted power-system data-transaction platform, help data confirm rights, promote circulation, transaction, and sharing of data, improve data authenticity, and realize efficient, stable, safe and reliable data assetization.

Absstract of: US2022311613A1

Systems and methods of the present disclosure enable reversible blockchain operations. An operation-reverse operation pair specifies an operation for exchange of a first token for a second token, and a reverse operation for return of the second token for the first token upon at least one condition being satisfied. A self-executing software container (SESC) executes the operation-reverse operation pair according to the condition by detecting a transfer of the first token into a first segregated data structure, and a transfer of the second token from a second token storage to a first token storage. The SESC initiates a transfer of the first token from the first segregated data structure to a second segregated data structure in response to the transfer of the second token. Upon detecting a reverse operation matching the condition, the SESC initiates a transfer of the first token back to the first segregated data structure.

Absstract of: US2022311603A1

In an approach to improve the field of multi-cloud environments by detecting data corruption between storage systems. Embodiments perform information tunneling on data transferring between a source storage system and a target storage system. Further, embodiments determine a checksum data of a data payload does not match an Internet Protocol (IP) packet extracted checksum and a blockchain based checksum and compare the checksum data at the target storage system with the IP packet extracted checksum and the blockchain based checksum to identify one or more checksum mismatches. Additionally, embodiments identify a corruption in a data payload based on the comparison between the checksum data at the target storage system and the IP packet extracted checksum and the blockchain based checksum, validate the corruption in the data payload, and update respective entities of identified corruption in the data payload.

Absstract of: US2022311600A1

The concepts and technologies disclosed herein are directed to time-aware blockchain staged regulatory control of Internet of Things (“IoT”) data. A federation platform can receive a registration request from an enterprise edge platform to register a blockchain identifier for publication of public data on a public blockchain. The federation platform can determine if the registration request contains any restricted data parameters. In response to determining that the registration request does not contain any restricted data parameters, the federation platform can query a security module to obtain an encryption key. The federation platform can receive the encryption key from the security module. The federation platform can store the encryption key in association with the blockchain identifier and an enterprise edge platform ID that uniquely identifies the enterprise edge platform. The federation platform can return the encryption key to the enterprise edge platform and allow publication of encrypted public data to the public blockchain.

Absstract of: US2022311595A1

A processor may store a write set of a transaction in a cache. The cache may include state information, and the cache may be uncommitted to a blockchain. The processor may identify a subsequent transaction. The subsequent transaction may read from the cache when a requested key is present in the cache. The processor may order the transaction and the subsequent transaction based on what is read from the cache. Ordering the transaction and the subsequent transaction may avoid an abort of the subsequent transaction.

Absstract of: EP4064167A1

The computer-implemented invention provides a method and corresponding system for controlling access to and/or use of an internet-enabled resource. The invention uses a distributed electronic ledger such as, for example, the Bitcoin blockchain. The resource may be an IoT device or system. Access to the resource is permitted or enabled upon provision of a cryptographic key e.g. a private key which corresponds to a public key which has been stored in memory. In one embodiment, the public key is stored in a DHT. Access to the resource is prevented or disabled by removing the public key from memory, and using a redeem script of a blockchain Transaction to spend a tokenised output of a further blockchain Transaction. The process of communicating the requisite cryptographic keys and transferring funds is performed via the blockchain. The keys are communicated as tokens in the metadata of transactions scripts. In use, when access is requested by the user, an encrypted message is sent to the resource. The message has been encrypted using the user's private key. If the resource can use the previously communicated public key to decrypt the message, access can be granted. The invention is particularly suited for use in situations where temporary access or use of the resource is to be granted eg rental scenarios.

Absstract of: WO2022109851A1

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for cross-chain communication in a blockchain-based trusted system. One of the methods includes receiving a message including ledger data by a first cross-chain communication component in a first blockchain network from a blockchain node in the first blockchain network. The first cross-chain communication component determines whether the ledger data is valid. If the ledger data is valid, the first cross-chain communication component generates formatted ledger data based on the ledger data, and send a cross-chain message including the formatted ledger data to a second cross-chain communication component in a second blockchain network.

Absstract of: US2021158444A1

Exemplary embodiments provided herein include a method for safe creation, custody, recovery and management of a digital asset, agnostic to an underlying blockchain technology, the method including establishing a virtual layer where three private keys are generated, transacting the digital asset by using two of three of the private keys and multi-party computation techniques, abstracting interactions between the three private keys from the underlying blockchain technology, having a digital asset transaction considered as a single-signature by the underlying blockchain technology, and recovering the digital asset if any of the three private keys is no longer available. Additionally, the digital asset may be a cryptocurrency, and a party may be disconnected from any network during the normal user operation phases. Furthermore, the digital asset transaction may be considered as a single-signature, as seen by the underlying blockchain technology, and is associated to a public key PK_ABC.

Absstract of: EP4064161A1

The present invention provides a media distribution system using blockchain comprising: at least one member terminal connected to a blockchain network in which distribution information for media is stored, wherein the member terminal includes a producer terminal that uploads produced media to a control server, a distribution terminal that duplicates the media and re-uploads the media to the control server, or uploads, to the control server, the media reproduced by processing the media, and a consumer terminal that consumes the uploaded media; and the control server comprising a distribution intermediary unit that provides, to the consumer terminal, the media uploaded by the producer terminal or the distribution terminal and stores, in the blockchain network, a block including distribution information on the media, and a currency issuing unit that issues and pays a first cryptocurrency of a preset amount to the producer terminal, or issues and pays a second cryptocurrency of a preset amount to the distribution terminal, wherein the second cryptocurrency is a duplicate of the first cryptocurrency.

Absstract of: EP4064166A1

The computer-implemented invention provides a method and corresponding system for controlling access to and/or use of an internet-enabled resource. The invention uses an electronic ledger such as, for example, the Bitcoin blockchain. The resource may be an IoT device or system. Access to the resource is permitted or enabled upon provision of a cryptographic key e.g. a private key which corresponds to a public key which has been stored in memory. In one embodiment, the public key is stored in a DHT. Access to the resource is prevented or disabled by removing the public key from memory, and using a redeem script of a second blockchain Transaction to spend a tokenised output of a first blockchain Transaction. The second transaction detokenizes the token (or 'coloured coin') contained within the first Transaction. In order to prevent further access to the resource, an encrypted message is sent to the internet-enabled resource, wherein the message communicates a public key and the redeem script. The resource then checks whether the public key in the message matches that stored in memory and, if it does, removes the stored version of the public key from memory. The resource then uses the redeem script to perform the detokenization.

Absstract of: CN114008654A

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for managing blockchain-based trusted transaction services are disclosed herein. One of the methods includes storing order data of an order between a buyer and a seller on a blockchain of a blockchain network, the order data including one or more payment conditions and data of a trusted credit (TU) service of the order; verifying that the buyer has a TU service of the order secured by the buyer financial institution; generating an intelligent contract of the order on the block chain based on the order data; and in response to determining that the payment condition of the specified payment in the smart contract is satisfied, executing the smart contract to automatically instruct the buyer financial institution to pay the order for the buyer to the seller according to the TU service of the order.

Absstract of: EP4064606A1

Die Erfindung betrifft ein Verfahren zum Ausführen einer Zahlung unter Verwendung eines mobilen tragbaren Endgeräts (100) einer Mehrzahl von mobilen tragbaren Endgeräten und eines Blockchain-Systems (156). Das Blockchain-System (156) umfasst eine Mehrzahl von Blockchains (148, 149, 167). Jeder der Blockchains (148, 149, 167) sind jeweils ein oder mehrere Blockchain-Server (140, 141, 161) zugeordnet, welche die entsprechende Blockchain (148, 149, 167) verwalten. Jedem mobilen tragbaren Endgerät der Mehrzahl von mobilen tragbaren Endgeräten ist jeweils eine Seriennummer aus einem Raum von Seriennummern zugeordnet. Der Raum von Seriennummern ist unterteilt in eine Mehrzahl von Bereichen von Seriennummern. Jedem der Bereiche von Seriennummern ist jeweils eine der Blockchains (148, 149, 167) des Blockchain-Systems (156) zugeordnet, welche Zahlungen von Blockchain-Adressen protokolliert, welche mobilen tragbaren Endgeräten mit Seriennummern aus dem entsprechenden Bereich von Seriennummern zugeordnet sind.

Absstract of: WO2022197717A1

An adaptive fifth generation (5G) communications system includes an adaptive 5G tower; a first adaptive 5G site coupled by a dedicated link with the adaptive 5G tower; and a second adaptive 5G site coupled by a direct link with the first adaptive 5G site. The direct link may be established by the first adaptive 5G site and couples the second adaptive 5G site with the adaptive 5G tower. Data signals may be communicated between the adaptive 5G tower and the second adaptive 5G site via the direct link and the dedicated link. Usage of the direct link is accounted for in a blockchain master ledger. The blockchain master ledger corresponds to an adaptive 5G model and may be separately maintained by each of the adaptive 5G tower, the first adaptive 5G site, and the second adaptive 5G site. The master ledger may include relay, processing, path, power, and transaction layers.

Absstract of: WO2022194850A1

A computer implemented method for proof-of-work for generating and validating a block of a blockchain using at least one printing device is proposed. The printing device is configured for generating at least one digital image depending on a printer control setting. The method comprises the following steps: i) (110) providing an initial digital image (112) comprising a plurality of colored pixels, wherein the initial digital image (110) is taken from an image database and/or is generated by printing and scanning the initial digital image by using an initial printer control setting; ii) (114) providing a task digital image (116) comprising a plurality of colored pixels different from the initial digital image (112); iii) (118) selecting a mining printer control setting (120), printing the initial digital image (112) by using the printing device by blending pigments with the selected mining printer control setting (120) and scanning the printed image by using at least one scanning device, thereby generating a mining digital image (122) having a plurality of colored pixels different from the initial digital image (112); iv) (124) comparing the colored pixels of the mining digital image (122) and the task digital image (116) by using at least one processing device; wherein the method comprises repeating steps ii) (114) to iv) (124) until the colored pixels of the mining digital image (122) and the task digital image (116) are found to be identical, wherein in each case in step iii

Absstract of: WO2022193789A1

An anonymous multi-signature method, a computer device, and a storage medium. The method comprises: respectively acquiring first signature data and corresponding first public keys and first elliptic curve random numbers (S11); generating, according to the first public keys, signature identifier information for identifying whether each user that has the right to participate in multi-signature has participated in the present multi-signature (13); generating first proof information according to first target data, the signature identifier information, the first signature data and the corresponding first public keys and first elliptic curve random numbers (S15); and generating a first anonymous multi-signature transaction comprising the first target data and the first proof information and sending same to a blockchain network (S17), such that the first anonymous multi-signature transaction is executed by means of an anonymous multi-signature contract, and the first target data, the first proof information and a verification parameter are input into a zero-knowledge proof circuit for anonymous multi-signature verification. The method implements the anonymous multi-signature on a blockchain.

Absstract of: WO2022193415A1

The present application relates to the field of data processing, and provides a data generation method and apparatus, a computer device, and a storage medium. The method comprises: acquiring product data information; classifying the product data information to obtain target information, pricing data, claim settlement data, and material attachment data; classifying the target information according to product classification factors to obtain data sets; calculating a first degree of influence of a specified data set on the claim settlement data and selecting first feature data; calculating a second degree of influence of the specified data set on the pricing data and selecting second feature data; classifying the material attachment data according to the product classification factors to obtain material type data, and selecting specified material type data; and generating, on the basis of the first feature data, the second feature data and the specified material type data, a quotation material list corresponding to the product classification factors. The present application improves the generation efficiency of the quotation material list. The present application can also be applied to the field of blockchains, and data such as the quotation material list can be stored on a blockchain.

Absstract of: WO2022197700A1

Systems and methods are provided for processing global CBDC transactions in a blockchain supported network, where domestic and foreign banking institutions may provide mutual hosting of a consortium blockchain to allow more seamless and direct CBDC supported transactions, and CBDC exchanges in real-time or near-real time.

Absstract of: WO2022195860A1

Provided are a voting system and a voting method, which are capable of performing electronic voting securely. A voting system (1) comprises: a secret sharing unit (2) that generates a plurality of shares from voting information by using secret sharing; a plurality of share storage units (3) that store the plurality of shares in a distributed manner; a first blockchain processing unit (4) that transmits transaction data of voting, which is performed by using the voting information, to a node that manages a blockchain to record the transaction data into the blockchain; and a secret calculation unit (5) that performs secret calculation for analyzing the voting by using the plurality of shares stored in a distributed manner.

Absstract of: WO2022196850A1

In an authentication method comprising a blockchain network including a public distributed ledger, a first electronic device associated with a first user, and a second electronic device associated with a second user, the blockchain network may store a first user identifier associated with the first user and a first institution identifier corresponding to at least one trusted institution, and the first electronic device may include a first vaccination certificate issued by the at least one trusted institution and including a first digital institution signature of the trusted institution, the first user identifier, and information associated with vaccination of the first user. Various other embodiments understood through the specification are also possible.