Absstract of: EP4191430A1

Disclosed are a data processing method and apparatus applied to a blockchain system. The method comprises: in response to a request of an access terminal for writing target data into a blockchain, determining a target node role that has permission to read the target data, wherein an access terminal connected to each node device has the permissions of a node role corresponding to the node device; acquiring an encryption key corresponding to the target node role; performing encryption processing on the target data according to the encryption key, so as to obtain ciphertext corresponding to the target data, wherein the ciphertext corresponding to the target data can be decrypted by an access terminal corresponding to the target node role; and storing, in the blockchain, the ciphertext corresponding to the target data. By means of the technical solution provided in the embodiments of the present application, not only can the efficiency of data sharing among a plurality of node roles be greatly improved, but the security of data sharing can also be ensured.

Absstract of: EP4191944A1

A method carried out by a device (202, 203, 204) configured to function as a node in a storage network (201) for distributed content storage, said network comprising a plurality of nodes, said device comprising at least one processor and at least one memory with code which when executed by said at least one processor causes the device to carry out the method, said device being provided with a private and public key pair, said method comprising:- receiving (S1309), from a user device (210, 211, 212), a request for a key fragment of a content key, wherein said content key was used to encrypt a given content, said key having been split into N fragments with N>2, with k key fragments being necessary to reconstruct the content key, with k>1, a single of said encrypted key fragments for said given content having been encrypted with the public key of said device;- determining (S1310, S1311) in a blockchain comprising a registry indicating whether a user has a right to obtain a content, whether the user associated with the requesting user device has a right to the given content;- if the determination is positive, obtaining (S1312 - S1316) license data comprising terms of use of said given content by said user associated with the requesting user device and determining whether said terms of use are respected;- if said terms of use are respected, obtaining said single key fragment, decrypting said single key fragment using the private key of said device, reencrypting (S1317) said key fr

Absstract of: EP4191936A1

Disclosed herein is a method for storing blockchain transaction data. The method includes selecting at least one block file storing blockchain transactions as an encoding block file target, generating encoded chunks including parity chunks using the encoding block file target, and making at least one of the encoded chunks correspond to at least one of blockchain nodes to store at least one of the encoded chunks.

Absstract of: EP4191494A1

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 a blockchain; and b) a second set of constraints on the second transaction, the second set of constraints including one or more constraints associated with data items of the set of data; ii) verifying that the first set of constraints and the second set of constraints are satisfied; and iii) reassociating the digital asset based at least in part on the verifying.

Absstract of: 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.

Absstract of: WO2023097000A1

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.

Absstract of: WO2023097077A1

Certain aspects of the present disclosure provide techniques for reporting transactions in a blockchain. The method generally includes instantiating a plurality of worker processes for processing blocks from a blockchain in parallel. Each worker process is generally associated with an offset into a buffer of blocks from the blockchain to be reported to one or more computing resources. A subject block to be reported to the one or more computing resources is selected from the buffer. The subject block is generally a block inserted into the buffer by a worker process. The subject block is validated based on a block number associated with the subject block and a block number of a next block to be reported. Based on validating the subject block, the subject block is reported to the one or more computing resources, and the subject block is marked in the buffer as a reported block.

Absstract of: WO2023094341A1

Computer implemented method for proof-of-work for generating and validating a block of a blockchain, also denoted as consensus mechanism, using at least one printing device, wherein 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 a cryptographic hash value; ii) (112) generating at least one initial digital image (114) comprising a plurality of col¬ ored pixels (116), wherein the initial digital image (114) is generated by converting at least one part of the cryptographic hash value into color values of the colored pixels (116); iii) (118) generating a task digital image (120) comprising a plurality of colored pixels (122) different from the initial digital image (114); iv) (124) selecting a mining printer control setting (126), printing the initial digital image (114) by using the printing device by mixing and/or blending pigments with the selected mining printer control setting and scanning the printed image by using at least one scanning device, thereby generating a mining digital image having a plurality of colored pixels different from the initial digital image (114); v) (128) comparing the colored pixels of the mining digital image and the task digital image (120) by using at least one processing device; wherein the method comprises repeating steps ii) to v) until the colored pixels of the mining digital image and the task digital image (120)

Absstract of: US2023169493A1

A method for optimizing blockchain storage size through use of relative values includes: receiving, by a blockchain node in a blockchain network that manages a blockchain, a plurality of blockchain data values, each including unspent transaction outputs, at least one destination address, and, for each destination address, an original currency amount; identifying a base value; modifying the original currency amount included in each blockchain data value to be a relative currency amount based on a difference between the identified base value and the original currency amount; generating a new block, the new block including a block header and the modified plurality of blockchain data values; and transmitting the generated new block to a plurality of additional nodes in the blockchain network.

Absstract of: US2023169045A1

A system and method for information storage using blockchain and pointer databases, comprising a computer with a blockchain manager and datastore manager, and blockchain data input, which connects over a network to a distributed blockchain ledger containing information such as personally-identifying data and a datastore system containing searchable information such as a DNS system on the persons entered into the blockchain, the datastore system also containing reference numbers for each searchable block in the blockchain, such that verification or identification can both be accomplished swiftly and securely of data in the blockchain such as for data verification to verify or identify persons submitting data to such a system.

Absstract of: WO2023093041A1

The present application provides a block chain state data processing method, which is applied to block chain nodes, comprising: creating, at the beginning of each period en, a state tree Sn corresponding to the period en; obtaining state data, wherein the state data comprises information necessary for a node to process an incoming block and/or a received service event; and storing the state data into the state tree Sn according to a preset requirement, so that the node invokes the state data when processing various services, wherein the preset requirement comprises: the state data in each period en can only be stored in the state tree Sn corresponding to the period en. The technical problem in the prior art that the retrieval and access efficiency of the state data is greatly reduced after the block chain system runs for a period of time is solved. The technical effect of avoiding the reduction of the transaction processing efficiency or processing capability of the block chain node caused by explosive increase of the state data is achieved.

Absstract of: US2023171225A1

A request to resolve at least a name of a domain of a name identifier is received. It is automatically determined that the name of the domain is to be resolved using a blockchain. The identifier of the non-fungible token is used to send a request to a smart contract associated with the blockchain to obtain one or more resolution records for the domain. The blockchain stores the non-fungible token associating the domain to an account address of an owner of the domain. The one or more resolution records of the domain are received. The received one or more resolution records are used to resolve at least the name of the domain.

Absstract of: US2023171104A1

Certain aspects of the present disclosure provide techniques for reporting transactions in a blockchain. The method generally includes instantiating a plurality of worker processes for processing blocks from a blockchain in parallel. Each worker process is generally associated with an offset into a buffer of blocks from the blockchain to be reported to one or more computing resources. A subject block to be reported to the one or more computing resources is selected from the buffer. The subject block is generally a block inserted into the buffer by a worker process. The subject block is validated based on a block number associated with the subject block and a block number of a next block to be reported. Based on validating the subject block, the subject block is reported to the one or more computing resources, and the subject block is marked in the buffer as a reported block.

Absstract of: US2023171098A1

A digital time-lock contract specifies that an agent holds an encryption private key corresponding to an encryption public key on a blockchain network and then releases the encryption private key to the blockchain network within a specified time window. An agent provides a first cryptographic asset for holding and then releasing the encryption private key to the blockchain network, the first cryptographic asset being transferrable when the encryption private key is released to the blockchain network within the specified time window. A client provides a second cryptographic asset to the agent for holding and then releasing the encryption private key to the blockchain network, the second cryptographic asset being transferrable when the encryption private key is released to the blockchain network within the specified time window. The digital time-lock contract can be broadcast to the blockchain network for mining onto the blockchain.

Absstract of: US2023171116A1

Block header hashes of a blockchain are used as tokens for time stamps. Since the blockchain is ubiquitous with the block header hashes randomly generated and are practically immutable, the time stamps using the block header hashes are secure. A time stamping system uses a block header hash as a time stamp can be used to time stamp digitalized representation of a physical object. The time stamped digitalized representation of a physical object can be used as proof of current ownership of the physical object if the time stamp is adequately recent.

Absstract of: US2023171088A1

One-time-pad (OTP) encryption systems and methodologies are resistant to cracking, even by advanced quantum computers. In contrast to some purported solutions, the required elements of an unbreakable OTP system are preserved under Claude Shannon's mathematical proof. In alternative embodiments, the invention uses a secure network to reconstitute blockchain systems without the use of asymmetric encryption. Described extensions of these block chain systems are described which enable an entirely new set of applications for protecting privacy, sharing information, performing validations and analysis of data, and creating system actions that are constrained by complex data algorithms.

Absstract of: WO2023097093A1

Methods and systems are described herein for novel uses and/or improvements to blockchain technology. As one example, methods and systems are described herein for facilitating cross-chain processing actions in decentralized networks. One solution to accommodate cross-chain processing actions uses a processing pool, which acts as an intermediary between two blockchain networks. The system and methods described herein further provide a novel model for the operation of self-executing programs for the autonomous execution of the automated processing pool.

Absstract of: AU2021380655A1

Methods and systems described herein improve blockchain storage operations in a variety of environments. A blockchain compression system may determine that a blockchain compression condition associated with a blockchain having a first plurality of blocks has been satisfied. In response, the system compresses the first plurality of blocks using a first hash tree into a first root hash value and stores the first plurality of blocks in a first database. The blockchain compression system generates a first new era genesis block that includes the first root hash value and a first database address of the first database at which the first plurality of blocks are stored. The blockchain compression system stores the blockchain at one or more nodes in a blockchain network. The blockchain includes the first new era genesis block and any previous new era genesis blocks. This may effectively reduce storage requirements for the blockchain, in various embodiments.

Absstract of: WO2023095967A1

Provided is a remote-interaction large document access system in which a blockchain-based DID service, an IPFS-based data sharing technology and a private key distributed storage technology are combined. The remote-interaction large document access system is composed of an IPFS node, a holder node, an issuer node, a first verifier node and a DID system.

Absstract of: WO2023096007A1

The present invention relates to a reading management system. An embodiment of the present invention provides a reading management system for managing a reading amount of a user, the system comprising: a user terminal which is carried by a user and generates reading image data by photographing at least a part of a book during reading; and a management server which receives the reading image data from the user terminal and identifies a reading amount from the reading image data to generate reading analysis data, encrypts the reading image data and the reading analysis data by using a block chain to store the encrypted data as cryptocurrency, generates a reading information content by using scanning data of a book which has been read, and manages the sharing of the reading information content and the transaction of the cryptocurrency.

Absstract of: WO2023096974A2

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.

Absstract of: WO2023096181A1

An electronic device in one embodiment according to the present disclosure may comprise: a memory for storing partial ledgers including parts of an entire ledger for a blockchain network; and at least one processor. The electronic device can generate, as a block concatenated after the transaction block, an ending block including the ending hash value and signature data, which is generated by signing an ending hash value for a transaction block with a private key, and store the ending block in the memory.

Absstract of: WO2023095085A1

Present disclosure generally relates to energy resource networks, more particularly relates to methods and systems for transferring long range peer-peer (P2P) energy. The blockchain based platform/system connects the entities and the consumers. The system may process a digital contract between the entities such as the renewable energy producer, utility grids and the consumers such as enterprise energy consumer or smart energy community consumer. The system may facilitate physical energy transfer from the entities to the consumers through utility grid facilities. The system provides support for fault tolerance utilizing multiple energy sources, and stores excess energy to be utilized at a time when needed. The execution of digital contract triggers physical transfer of energy from the entities to the consumers including the intermediate entities.

Absstract of: WO2023094973A1

Disclosed herein are systems and methods for NFT data structure and related features and system. In some embodiment, a data structure is defined that is configured for storing certain defined elements on the blockchain ledger and other element on InterPlanetary File System or similar storage system. The other element is configured in accordance with the data structure to include a group of files. The element is a compressed archive of the group of files. The files are configured to provide the benefit of the usefulness or benefit of the product represented by the NFT and defined by the filed in the product archive. The data structure stores a pointer to the storage system and an identifier of the particular product on the blockchain. The system is configured to provide an expansion feature by way of the definition of a data structure that require minimal data storage such that storage on the block chain is light. The system can also provide a media archive that is contains convention media files and an image that is stored on the Internet on a publicly accessible server such as using a URL to quickly retrieve such related media.

Absstract of: WO2023093319A1

Provided in the present application are a blockchain-based account resetting method, and a device. The method comprises: acquiring resetting information, and ciphertext of at least one associated account logged in on another authentication device, and generating a resetting notification request according to the resetting information and the ciphertext of the at least one associated account, so as to obtain a resetting notification request corresponding to each authentication device; and sending the corresponding resetting notification request to each authentication device, wherein a resetting transaction request is generated by means of each authentication device and according to the corresponding resetting notification request and ciphertext of an associated account logged in on the authentication device, a verification result of each associated account is obtained by means of a blockchain system performing identity verification according to a resetting transaction request, which is sent by each authentication device, and joint associated account ciphertext stored in a blockchain, and the blockchain system is used for performing account resetting processing according to the resetting information when the verification result of each associated account meets a preset resetting condition. The account security can be improved by encrypting and storing an associated account in a blockchain.