Absstract of: WO2025214178A1
An identity authentication method based on a building Internet of Things. The method comprises: a client sending a first request message for acquiring an anonymous identifier to a server; when the first request message passes verification against a real user information table previously uploaded to a private blockchain, the server generating an anonymous identifier on the basis of a user authentication identifier, uploading anonymous user information comprising the anonymous identifier to an anonymous user information table of a consortium blockchain, and returning the anonymous identifier to the client; the client sending a second request message for acquiring an anonymous credential to a first management node; and when it is verified on the basis of the anonymous user information table that a user corresponding to the anonymous identifier has permission to access a target building device, the first management node generating an anonymous credential corresponding to the anonymous identifier, and returning the anonymous credential to the client.
Absstract of: WO2025216808A1
Certain aspects of the present disclosure provide techniques for securely minting and distributing tokens on a blockchain. An example method generally includes configuring, by an owner of a token deployed on a blockchain, a premint wallet smart contract associated with a token preminter that generates preminted tokens for the token. The token preminter and premint token spenders are configured by the owner of the premint wallet smart contract. A plurality of tokens are minted by the token preminter to the premint wallet. At one of the premint token spenders, a request to spend an amount of preminted tokens from the premint wallet is received. The requested amount of preminted tokens is compared to a spending allowance defined for the token premint spender, and based on the comparing, the requested amount of preminted tokens are transferred by the token premint spender from a premint wallet to a destination wallet.
Absstract of: US2025322394A1
A system and method for generating risk assessment scores for blockchain addresses and smart contracts, including constructing a graph representation having nodes representing one of a blockchain address or a smart contract address on a blockchain and edges representing a transaction between an externally-owned blockchain account on the blockchain network and a smart contract address on the blockchain network, applying pattern recognition algorithms to the graph representation to identify sub-graphs having nodes indicating relationship structures indicative of potential fraudulent activity, executing filtering that analyze transaction flows, logic patterns, and behavioral characteristics of nodes within each sub-graph, and determining a risk score for each blockchain account address and smart contract address associated with each sub-graph.
Absstract of: US2025322392A1
Devices and systems for implementing decentralized custodial wallets are described. The described embodiments advantageously provide private key management, decentralization, and privacy. Embodiments of the disclosed technology further provide an example method that includes receiving, from a user, an input indicative of an instruction that creates a decentralized identifier (DID) associated with a public/private key pair of the user that includes a user public key and a user private key. The method further includes transmitting, to a data registry on a blockchain, public information associated with the user and the user public key, generating (a) a verifiable credential (VC) data structure comprising the DID, a plurality of attributes, and a first plurality of proofs, and (b) a verifiable presentation (VP) data structure comprising the VC data structure and a second proof. Herein, each proof of the first plurality of proofs verifies a veracity of a corresponding attribute of the plurality of attributes, each proof is signed by the DID, and the VC data structure is signed by a VC-generation key.
Absstract of: US2025322007A1
Generative media content (e.g., generative audio) can be dynamically generated based on various inputs, which can include blockchain data. A playback device accesses blockchain data stored via a distributed ledger and generates media content based at least in part on the blockchain data. The playback device can access a library of pre-existing media segments and arrange a selection of pre-existing media segments from the library for playback according to a generative media content model and based at least in part on the blockchain data. The generated media content can then be played back via the playback device.
Absstract of: US2025322412A1
A supplier verification system includes a processing system and a non-transitory, computer-readable storage medium having encoded thereon, machine instructions for implementing and managing a blockchain network. A processor executes the machine instructions to receive a raw materials supplier identity and a description of a batch of raw materials from the supplier, receive material test results from a specified number of independent entities analyzing compliance of the raw materials with given quality specifications, store the material test results in a block chain that includes a smart contract for confirming the first material test results, and execute the smart contract to generate determine a satisfactory variation in the confirmation scores, and, based on a satisfactory variation, execute a block validation routine.
Absstract of: US2025322433A1
A system, method, device, and data platform for tokenizing an event. A signal marking an event as important is received. Event metadata is retrieved from one or more data sources associated with the event. A token representing the event is generated. The token is minted to a blockchain ledger to ensure verifiability and uniqueness. Usage of the token is tracked across one or more digital or physical transactions.
Absstract of: US2025321950A1
Systems and methods for tracking creation and modification of digital records using consensus-driven semi-private blockchain. The present disclosure combines the benefits of Blockchain-like technology with traditional authentication by providing a verifiable immutable link between a low-delay Blockchain-like inscription and a highly trustworthy but delayed confirmation.
Absstract of: US2025322393A1
Described is grouping, by a blockchain node, transactions in a blockchain. A plurality of transactions is obtained that invoke a same contract and that include a plurality of first transactions, where execution of each of the first transactions includes access to one or more first variables of the same contract, and where the one or more first variables correspond to mapping relationships in the same contract. A mapping relationship identity corresponding to the one or more first variables that are to be accessed in the execution of each of the first transactions is obtained, where a storage position of each of the one or more first variables in a state database is determined based on the mapping relationship identity corresponding to the one or more first variables. The plurality of first transactions are grouped based on the mapping relationship identity corresponding to each of the first transactions.
Absstract of: US2025321777A1
A method for blockchain management includes receiving a first definition for a custom blockchain on a blockchain platform, the first definition including definitions for default data structures. The method further includes initializing a virtual machine and configuring the virtual machine using the first definition. The method further includes receiving a second definition for the custom blockchain, the second definition including definitions for user-defined data structures. The method further includes further configuring the virtual machine using the second definition and executing the custom blockchain on the virtual machine.
Absstract of: US2025322468A1
The disclosed system and method can manage real-time transactions using a blockchain ledger. A processor can create a fractionalized risk pool for a property, comprising asset tokens and an occupancy token. The processor can receive title information and can update the blockchain ledger with this information, a timestamp, and/or a property valuation. Upon receiving a transaction from a credit card network and/or issuing bank, the processor can determine a user's real-time equity.
Absstract of: US2025323929A1
An access control server may receive state information of an autonomous program protocol that is recorded on a blockchain. The access control server may generate a trace log associated with one or more transactions executed by the autonomous program protocol, the trace log comprising machine events executed by the blockchain, the machine actions associated with the one or more transactions. The access control server may extract a set of features from the trace log, wherein a feature in the set comprises a summary of a machine event executed by the blockchain. The access control server may input the set of features to a machine learning model to determine a threat nature associated with the transactions of the autonomous program protocol. The access control server may perform a responsive action to address the threat nature.
Absstract of: US2025323805A1
Systems and methods are disclosed to revolutionize blockchain consensus mechanisms by introducing a novel, inclusive framework that enhances efficiency, scalability, and environmental sustainability. Central to this breakthrough are a cluster-based scoring system and a multi-queue dynamic scheduling mechanism, designed to replace resource-intensive consensus models like Proof of Work and Proof of Stake. This approach allows nodes to participate based on merit, determined through an iterative scoring process within clusters, democratizing access, and participation across the blockchain network. The system dynamically adjusts mining complexity as the blockchain evolves, ensuring scalability and reducing energy consumption. A key innovation is the introduction of cooldown periods to prevent dominance by any single node, promoting fairness and security. This decentralized, efficient, and scalable solution paves the way for broader blockchain adoption, maintaining the technology's foundational principles while addressing its traditional limitations.
Absstract of: US2025323782A1
Disclosed is a neural network enabled interface server and blockchain interface establishing a blockchain network implementing event detection, tracking and management for rule based compliance, with significant implications for anomaly detection, resolution and safety and compliance reporting.
Absstract of: US2025323779A1
There is provided a framework to record to a blockchain unique identification (signatures) of physical items which have unique, random properties. Physical items are analysed using spectral imaging to determine the unique identifications. Hardware is shown to perform the analysis and various nodes of a peer-to-peer network are shown and described, which nodes may be configured to provide proof of location, privacy, trust and authentication. The solution can work even if the item is modified in some way if a subset of the unique properties remain.
Absstract of: US2025323796A1
A method comprising, at an attesting node of a network: receiving a sequence of data items from one or more client nodes of the network, determining an order of the sequence of data items, and attesting to the order by: including an indication of a respective set of one or more of the data items in each of a series of blockchain transactions. Each successive transaction comprises a respective input pointing to an output of the respective preceding transaction, wherein the output of the respective preceding transaction comprises a locking script, and the input of the respective successive transaction includes an unlocking script comprising a respective signature based on a respective key in a series of keys. The respective signature in each successive transaction signs a portion of the respective successive transaction including at least the indication of the respective set of data items.
Absstract of: US2025323795A1
Techniques for fast smart contract processing and validation. A C3N smart contract may be written in a high-level programming language such as Go rather than a domain-specific language (DSL) for smart contracts that is difficult to learn and utilize correctly. The smart contract may support a predefined list of C3N libraries, including APIs for accessing components within a C3N containerized environment. The smart contract may natively support access to oracles and data external to the C3N blockchain. The C3N smart contact may be deployed as source code or executable code for one or more target architectures. Such executable code may be run directly on the target architectures without additional compilation or interpretation. Validator nodes can verify correct execution of C3N smart contracts through unit tests.
Absstract of: US2025322708A1
A method for performing a determination of voter eligibility and facilitation of secure electronic voting is provided. The method includes authenticating a voter according to security setting and displaying a voting page for a jurisdiction corresponding to the voter's residence. The method then transmits to an adjudicating entity, voter information for determination of voter eligibility, and stores the voter information in a non-public blockchain. The method further includes determining whether the voter is eligible to vote based on the voter information stored in the non-public blockchain, generating a unique voter specific ballot for the voter in response to a determination that the voter is eligible to vote, and transmitting, to the adjudicating entity, a ballot selection received from the voter. The ballot selection is then stored on a public blockchain, and made available for release.
Absstract of: WO2025217178A1
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products directed to blockchain-enabled collaborative application deployment and operation in wired and/or wireless communications are provided. Among the methods is a method that may include transmitting a request to join a collaboration group associated with a set of collaborative applications; receiving, based on the request, a response including information indicating a proposal of a smart contract; transmitting feedback based on the proposal of the smart contract; and receiving an acknowledgement notification indicating status information of the smart contract and that one or more devices have joined the collaboration group.
Absstract of: WO2025214856A1
System (100) for real-time communication over a communication network (10), the system (100) comprising resource servers (210), a blockchain (140) and a decentralized network coordinator, DNC, (130) defined in terms of one or several smart contracts (142) defined on the blockchain (140). The DNC (130) is configured to process blockchain transactions from the resource servers (210); store, on the blockchain (140), updated routing information (143) and status information regarding individual resource servers (210); execute an automated voting, resulting in an updated set of rating scores for one or several of the resource servers (210); and allow each of a plurality of peers (20) to access communication information from the blockchain (140), allowing the peer (20) to initiate communication over the transport layer protocol and using non-blockchain communication transactions, with a selected resource server (210). The selected resource server (210) routes the non-blockchain communication and receives remuneration from the DNC (130).
Absstract of: WO2025215021A1
A MPC system and a method is provided to reduce the total costs of a multi-party computation using pre-processed data in a secure manner and ensure a high quality and validity of the computation when using pre-processed data in the MPC, such that the MPC protocol can perform the required computation in an easy and rapid manner. The MPC system for cross-chain communication between MPC groups comprises a plurality of servers to execute programs related to MPC or blockchains. The MPC system comprises MPC computing groups comprising at least two servers, wherein the MPC computing group is configured to perform MPC using MPC pre-processed data, wherein said MPC computing group is configured to be in communication with a first blockchain. One or more MPC pre-processing groups comprising at least two servers, wherein the MPC pre-processing group is configured to generates MPC pre-processed data, wherein said MPC pre-processing group is configured to be in communication with a second blockchain. At least one first server supports the first blockchain and at least one second server supports the second blockchain. The MPC computing group generates an order for MPC pre-processed data in the first blockchain. The first blockchain deploys the order for the MPC pre-processed data into the second blockchain. The second blockchain is configured to selects MPC pre-processing group or groups to provide the MPC pre-processed data. The selected MPC pre-processing group provides the MPC pre-proce
Absstract of: WO2025213464A1
A method for handling blockchain transaction where a client transmits a request to endorse a transaction with a special indication that such transaction should be batched with other transactions to one or more endorsing peers. Moreover, each endorsing peer simulates persisting the transaction invocation request to the ledger and, if the simulation is successful, adds an identifier for the transaction, TxID and invocation parameters to a WriteSet and sends a response to the client. In addition, the client sends an order request for the transaction to an ordering service for the inclusion of the transaction in a block, such as a gossip message received by each peer, which validates and commits the transaction. Moreover, a coordinator invokes a transaction that triggers the batch execution of a group of such pending transactions, such as all transactions of the batch are executed as one transaction representing the impact of all batched transactions.
Absstract of: EP4632614A1
A consensus method for adding blocks to a blockchain comprises Al-based block builders that form blocks of transactions; a voting algorithm that organises voting for candidate blocks to be added to the blockchain; and validators that participate in voting for candidate blocks and thereby determines the block to be added to the blockchain.
Absstract of: EP4633082A1
A method (300) and system (1) of determining a common secret for two nodes (3, 7). Each node (3, 7) has a respective asymmetric cryptography pair, each pair including a master private key and a master public key. Respective second private and public keys may be determined based on the master private key, master public key and a deterministic key. A common secret may be determined at each of the nodes based on the second private and public keys. In one example, a node (3, 7) may determine the common secret based on (i) a second private key based on the node's own master private key and the deterministic key; and (ii) a second public key based on the other node's master public key and the deterministic key. The invention may be suited for use with, but not limited to, digital wallets, blockchain (e.g. Bitcoin) technologies and personal device security.
Nº publicación: EP4632649A1 15/10/2025
Applicant:
TANGEM AG [CH]
Tangem AG
Absstract of: EP4632649A1
Disclosed herein a wearable authentication device of a user for secure signing of blockchain transactions and methods for use thereof. The wearable authentication device includes a tamper-resistant chipset comprising: a transceiver configurable to receive, from a mobile device (e.g., a smartphone), a request for a digital signature for a blockchain transaction, the request including a transaction data; a memory configurable to store one or more cryptographic keys of the user; a secure processor configurable to execute a hardware wallet application that generates the digital signature for the blockchain transaction using a cryptographic key; and the transceiver further configurable to transmit, to the mobile device, the generated digital signature to be used by the mobile device to sign the blockchain transaction.