Techniques are described selecting consensus nodes in a blockchain. A voting process is performed by a plurality of shareholder nodes to generate a voting result for each shareholder node. The voting process comprises each shareholder node voting for a plurality of expected nodes, and the expected nodes and the plurality of shareholder nodes comprise a group of nodes associated with a blockchain. A shareholder node is a node that owns at least one share. A voting result is verified for each shareholder node. After the voting process, a number of shares owned by each node of the group of nodes id determined based on the voting result. A plurality of consensus nodes are selected from shareholder nodes based on the number of shares owned by each of the shareholder nodes.

A voting system comprises at least one voting machine comprising: at least one voting machine processor performing voting machine operations comprising initializing a vote blockchain with a vote blockchain genesis block, the vote blockchain genesis block comprising a voting machine identifier and a genesis block hash value; creating a data structure comprising a plurality of votes and a hash value of a preceding block; determining a new block hash value of the data structure; appending a new block comprising the data structure and the new block hash value to the vote blockchain; and storing the vote blockchain in the at least one voting machine memory.

Provided is a method and system for digital voting. A digital voting system includes a Voting Administration (VA), a Trusted Third Party (TTP), a Voter and a digital voting platform which implements a Voting Chain (VC) as a Blockchain containing multiple blocks that have “roles”. These blocks include a Genesis block, a Campaign block, a Voter block, a Voting block, and a Legitimacy block. The VC contains data that is linked to an operation in the voting cycle, assigns tasks to a specific entity and establishes rules to ensure a highly secure pattern of actions and roles. The VA declares itself to the TTP, enrolls voters, releases ballots, starts election cycles using different blocks, and authenticates Voter IDs. The Voter discloses its Public Key to the TTP, casts and checks votes. The TTP registers Public Keys on the VC, verifies signatures, ensures anonymity, and registers ballots and votes.

A method and system for supply of data, including generating a first digital certificate referred (empowerment certificate) signed with a first signing entity's electronic signature. The empowerment certificate includes attributes of the described entity, information identifying the first signing entity, indication of data relating to the described entity, indication of a source of the data, and identification of a relying entity to which the data can be supplied. The relying entity forwards the empowerment certificate to a source supplying the data indicated in the empowerment certificate. The data may be supplied to the relying entity by a second digital certificate (custom certificate), signed with a second signing entity's electronic signature. Custom certificates may appear in custom certificate revocation lists. A system and method for transfer of ownership of electronic property from a first entity to a second entity, and a method and system for electronic voting are also provided.

Aspects of the present disclosure relate to an apparatus comprising secure enclave circuitry and document owner circuitry. The document owner circuitry is configured to determine a document to be shared, generate a plurality of share data units, transmit each share data unit of the plurality of share data units to a corresponding shareholder device, and provision the secure enclave circuitry with data indicative of the document to be shared. The secure enclave circuitry is configured to receive putative share data units from at least one of the corresponding shareholder devices, determine whether the received putative share data units satisfy a sharing policy, and responsive to the received putative share data units satisfying the sharing policy and based on the data indicative of the document to be shared, provide the document to be shared to said at least one of the corresponding shareholder devices.

Systems and methods for data sharing and transaction processing for high security documents are disclosed. According to one embodiment, a method may include (1) at least one computer processor verifying that a sender of a document is authorized to send the document; (2) the at least one computer processor verifying that a receiver of the document is authorized to receive the document; (3) the at least one computer processor identifying at least one restriction to associate with the document; and (4) the at least one computer processor associating the at least one restriction with the document.

Among other things, participants who belong to a group/crowd or group of participants can provide indications of relative values of ideas that belong to a body of ideas. A rank ordering according to the relative values of at least some of the ideas of the body is derived based on the indications provided by the participants. The participants can provide the indications in two or more rounds. Each of at least some of the participants provide the indications with respect to fewer than all of the ideas in the body in each of the rounds. Between each of at least one pair of successive rounds, the set of ideas is updated to reduce the role of some of the ideas in the next round. Voting can by synchronous, i.e. more or less simultaneously, or asynchronous, i.e. where voting occurs as groups of voters are reaching a critical mass (min number) to allow distribution of ideas groups.

A block confirmation method, a device, and a storage medium are provided. The method comprises: receiving several pieces of voting information of a first block, the voting information being generated by means of a signature after a committee node has received the first block packaged and broadcasted by a first recording node and verifies the first block successfully (S13); determining whether the voting information satisfies a preconfigured voting confirmation rule; if so, performing packaging according to the voting information to generate a first transaction (S14); and packaging the first transaction into a second block (S15). Said method shortens the block confirmation time, reduces the risk of double spending, improves the performance of blockchain systems, and provides a good user experience for users.

A data processing method for blockchain technology verifies transactions. Transaction operations on a blockchain are more consistent and the accuracy of transaction data on the blockchain is improved. A first transaction operation corresponding to a first transaction request on the blockchain, and a second transaction operation corresponding to a second transaction request on the blockchain are both performed. When an operation result corresponding to either the first transaction operation and/or the second transaction operation is a failure, then the processing on a transaction operation can be rolled back to a successful operation.

Methods, systems, computer-readable media, and apparatuses method for performing single sign on for a user device to the Internet. User sign-in credentials including an identity token of the user are received by a hosted desktop from the user device, including an indication that the user is attempting to access a website. The website is authorized as a trusted website by a network authorization node, and the website is issued a one-time-use token. A web browser of the hosted desktop receives an application provided by the website to cause the web browser to call the hosted desktop to initiate single sign on. Authenticity of the one-time-use token is requested by a daemon process, and the website's public key is obtained. Upon verifying authenticity of the web site, the identity token of the user is passed to the website, to enable the website to establish single sign on with the user.