A computer-implemented method includes: determining assets held by a remitter, the assets to be spent in a remittance transaction between the remitter and one or more payees, in which each asset corresponds to a respective asset identifier, a respective asset amount, and a respective asset commitment value; determining a remitter pseudo public key and a remitter pseudo private key; determining a cover party pseudo public key, in which the cover party pseudo public key is obtained based on asset commitment values of assets held by the cover party; and generating a linkable ring signature for the remittance transaction.

Described herein are techniques that provide privacy protection for a user by preventing user device tracking via device fingerprints. A communication may be received from a user device that includes metadata having information related to the user device. An intended recipient of the communication may be identified. Based on one or more of the user device or the recipient, a determination may be made as to what data within the metadata should be scrambled or selectively replaced. The data may then be overwritten with alternative data that may be selected at random, and the communication is forwarded to the recipient.

A voting system comprising at least one voting machine comprising: at least one voting machine processor. The 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 voting machine identifier hash value; storing the vote blockchain in at least one voting machine memory; iteratively, for a plurality of voters: receiving a signal indicating at least one vote made by a voter; creating a data structure comprising the at least one vote 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.

A voting system comprising at least one voting machine comprising: at least one voting machine processor. The 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 voting machine identifier hash value; storing the vote blockchain in at least one voting machine memory; iteratively, for a plurality of voters: receiving a signal indicating at least one vote made by a voter; creating a data structure comprising the at least one vote 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

A system and methods for anonymizing data for distribution on a distributed ledger arrangement is provided. The design includes receiving initial data at a computing device, the initial data relating to an initiating party, removing, at the computing device, personal identifying information from the initial data, thereby creating personal identifying information scrubbed data, anonymizing the personal identifying information scrubbed data on the computing device using DNA processing, thereby creating DNA processed scrubbed data, and providing the DNA processed scrubbed data from the computing device to the distributed ledger arrangement.

Systems and methods for using distributed ledger micro reporting tools are disclosed. In one embodiment, in a distributed computer application executed by an information processing apparatus comprising at least one computer processor, a method for using a distributed ledger micro reporting tool may include: (1) an event listener establishing a connection a distributed ledger; (2) in response to the creation of each block of a plurality of blocks on the distributed ledger, the listener reading block details from the block, wherein the block comprises a plurality of transactions, and the block details comprise a transaction hash for each of the plurality of transactions; (3) indexing the transaction hash with a timestamp; and (4) storing the index of the transaction hash with the timestamp.

An anonymous credential authentication system receives an anonymous credential signature value indicating that setting proposition information using a credential is satisfied from a user device that has been issued the credential combined with multiple pieces of attribute information constituting personal information, generates signer authentication information that confirms a signer of the anonymous credential signature value using an opening key, and outputs the signer authentication information.

Embodiments facilitate interoperability and secure patient selection for clinical trials and drug/device deployments. An entity may obtain a first set of health parameters and collective demographic information associated with one or more population segments and receive Electronic Health Record (EHR) sub-blocks with patient profile information and corresponding patient medical histories for patients. The entity may determine a subset of eligible candidate patients for a treatment based on information in the EHR sub-blocks and eligibility criteria for the treatment, which may be based the first set of health parameters, and/or the collective demographic information. The entity may transmit sub-blocks comprising eligible candidate patient profiles and medical information associated with the at least one treatment, and, in response to a received transaction block with a transaction confirmation, the entity may augment a multi-dimensional blockchain by linking: the transaction block, with a drug device information block and an EHR block.

A computer-implemented method for submitting feedback for an entity to a blockchain is disclosed. The method, which is implemented at one of a plurality of participating nodes, includes: obtaining a first key, the first key being one of a fixed set of keys distributed to participating nodes that are eligible to submit feedback for the entity; generating first feedback (rj) of the entity for submission to the blockchain; encrypting the first feedback (rj) using at least the first key; and submitting the encrypted first feedback to a mixing service, the mixing service being configured to generate a mixed transaction based on the encrypted first feedback and at least one other encrypted feedback submission from one or more eligible participating nodes.

An appliance includes a processor, a medium, a registration application, and a monitoring application. The registration application includes instructions in the medium that, when read and executed by the processor, configure the registration application to write a transaction identifier to a start message, the transaction identifier identifying the appliance, write a dataset of interest identifier to the start message, and send the start message to a database. The dataset of interest identifies a group of appliances including the appliance. The monitoring application includes instructions in the medium that, when read and executed by the processor, configure the monitoring application to monitor operations executed on the appliance, write data resulting from the operations to a data message, and send the data message anonymously to the database. The data message is signed with a member key associated with the group of appliances.