Telephone calls can be validated using blockchains. In one example, a computing node can generate a distributed ledger indicating relationships between telephone numbers and unique identifiers assigned to the telephone numbers. The distributed ledger can be accessible to a telecommunication system for validating telephone calls.

An exemplary transaction sharding method comprises splitting a distributed ledger into a plurality of shards; and storing a shard across the subgroup of computer nodes associated with the shard. Such a method further comprises assigning a new transaction to one of the plurality of shards, wherein assigning the new transaction comprises iteratively choosing one of the plurality of shards; in each iteration, determining a transaction-to-shard score measuring a probability that a subgroup of computing nodes associated with the chosen shard for the current iteration would be involved in a same-shard transaction for the new transaction; in each iteration, determining a latency-to-shard score by estimating a confirmation latency of the new transaction under the chosen shard for the current iteration; and selecting the new transaction to be assigned to the shard based on a combination of the transaction-to-shard score and the latency-to-shard score.

A system and method for meta-indexing, search, compliance, and test framework for software development using smart contracts is provided, comprising an indexing service configured to create a dataset by processing and indexing source code of a project provided by a developer, perform a code audit on the indexed source code, store results from the code audit in the dataset, gather additional information relating to the provided project, store the additional information in the dataset, and store the dataset into memory; and a monitoring service configured to continuously monitor the project for at least source code changes and make changes to the dataset as needed. Additionally, a smart contract authority creates and enforces smart contracts for every transaction taking place upon the software essentially mandating and guaranteeing the security and authenticity of the software during the software's development and use.

A method for supporting sharing of travel history of travelers in airports, wherein the travelers' identity is managed using a distributed ledger system, wherein the distributed ledger system includes a global identity blockchain and several per segment security blockchains, wherein the global identity blockchain is accessible by entities of the distributed ledger system, and wherein a per segment security blockchain is employed for a predetermined flight segment, such that the per segment security blockchain is accessible only by entities of the distributed ledger system that are involved in the predetermined flight segment, the method comprising the steps of: a) generating a history secret of a traveler according to a resistance mechanism for resisting a creation of multiple identities, in particular a Sybil-resistance mechanism; b) receiving, by the global identity blockchain, a registration request of the traveler, wherein the registration request comprises a commitment of the traveler's history secret, and wherein the global identity blockchain verifies the validity of the commitment; c) receiving, by the per segment security blockchain, a ticket transaction that is issued by an airline entity, wherein the ticket transaction comprise information on the identity of the traveler and information on the time of journey; d) recording, by the per segment security blockchain, a share travel history request from the traveler, wherein the share travel history request comprises a partial history secret, and wherein the per segment security blockchain verifies the validity of the partial history secret.

In an approach to improve mobile computation while traveling by dynamically generating one or more routes base on computing resource requirements of one or more endpoint devices. Embodiments identify, in real time, a plurality of autonomous vehicles, wherein the plurality of autonomous vehicles are traveling along a common route. Further embodiments, adjust, in real time, relative positions and speeds of the plurality of autonomous vehicles to maintain the plurality of autonomous vehicles within a predetermined geographic area while traveling along the common route, and wherein the predetermined geographic area is sufficient to collectively provide an amount of edge computing resources to satisfy one or more computing resource requirements of the one or more endpoint devices located within a first autonomous vehicle. Additionally, embodiments adjust, in real time, a route of the first autonomous vehicle based on the common route of the plurality of autonomous vehicles providing the edge computing resources.

A method and system for source versus target metadata-based data integrity checking. Concerning backup operations directed to protecting given data, said given data may be subjected to corruption detection at the source prior to initiating a backup operation, however, said given data may not be checked for data integrity following transfer of said given data to a target storage medium prior to committing the said given data thereto. That is, at least presently, the prospect of data corruption compromising given data during the time window through which the given data journeys, usually via a network, from its source to a target storage medium, is often overlooked. The disclosed method and system, accordingly, propose a scheme directed to detecting corruption amongst data transferred from a source to a target storage medium, and handling said data given the determined integrity of said data.

A system and apparatus for data confidentiality in a distributed ledger are disclosed. The system and apparatus preserve qualities of distributed ledgers, such as transparency, integrity, and redundancy, while also providing confidentiality, scalability, and security not previously available in distributed ledgers. The system includes a data confidentiality module that exploits a trusted execution environment for both transaction processing and key synchronization. The apparatus accessing the distributed ledger provides for new nodes joining the network, sending transactions to the ledger by existing nodes, securely processing the transaction using the trusted execution environment, securing transmission to the logic layer for application of business logic, reading and writing data to local storage, and reading encrypted transactions.

Method and Systems for configuring, monitoring, updating and validating Internet of Things (IoT) software code and configuration using blockchain smart contract technology. The use of smart contracts for delivering software code and or configuration scripts to IoT devices is an enhanced cybersecurity solution meant to ensure the security and integrity of IoT devices. The use of smart contracts is also shown how it can be used for verifying the integrity of the IoT devices software code and or configuration is a proactive method of cybersecurity. The proactive cybersecurity method will prevent man in the middle attacks as well as preventing rogue devices from impacting other IoT devices or networks.

Disclosed herein are methods, systems, and non-transitory, computer-readable medium for blockchain data storage. One of the methods includes identifying an account identifier (ID) of a blockchain account involved in the transaction, wherein the transaction is included in a current block to be appended to a blockchain associated with the blockchain network based on performing a consensus algorithm; updating an account state corresponding to the account ID of the blockchain account to an updated account state based on the blockchain transaction after the current block is appended to the blockchain; hashing the updated account state to generate a hash value of the updated account state; identifying the hash value of the account state corresponding to the blockchain account based on the account ID of the blockchain account; and updating, in the current state database, the hash value of the account state to the hash value of the updated account state.

An information processing apparatus which cooperates with a management service for receiving a document via a network and storing the document and a blockchain service for managing information about the document on a block-by-block basis, defining an association with a previous and/or subsequent block for each block, and then managing a plurality of blocks with a plurality of nodes includes an editing unit configured to perform editing processing on a source document to generate a new document, a transmission unit configured to transmit the generated document to the management service, and a cooperation unit configured to register information indicating that the source document was edited with the blockchain service, wherein, in response to the editing unit being confirmed to be a service trusted by the blockchain service, the information indicating that the source document was edited is registered with the blockchain service.