Systems and methods for creating non-fungible tokens (“NFTs”), preferably of medical imagery, automates the creation of NFTs utilizing a software application integrated with an imaging device. In preferred embodiments, the imaging device is a medical imaging device, a device associated with the imaging device, or otherwise resident on a computing device. In other embodiments, the software application is associated with medical record systems. Thus, the software application automatically creates an NFT based on imagery created by the imaging device and incorporates associated image, owner and/or software identifiers.

A system and method are provided for modeling and interpreting a modeled digital asset and its evolution with respect to the rights of a plurality of parties, the method comprising: executing an await function instance no more than once using one of at least one choice defined therein for disposition of the digital asset with respect to the rights of at least one of the plurality of parties, said await function instance incorporated upon the consent of the affected parties to fulfil a configured function instance associated with the at least one choice; executing an agree function instance that requires the consent of at least one of the plurality of parties to execute; and storing the results of the executed function instances in an append-only ledger.

The embodiments of the invention relate to a mining method and device based on a blockchain, and a computer readable storage medium. The method comprises: acquiring behavior data of at least one user within a cycle; determining a value corresponding to each user in the at least one user within the cycle according to the behavior data of the at least one user and a value of a rated quantity within the cycle; and recording an identifier, the behavior data and the value of the at least one user within the cycle in the blockchain, so as to realize more reasonable and more resource-efficient mining.

Provided is an information processing apparatus including: a generation section that generates, from secret keys corresponding to a plurality of respective algorithms, a plurality of public keys corresponding to the respective algorithms, a plurality of addresses corresponding to the respective algorithms, and a plurality of electronic signatures corresponding to the respective algorithms, by using the algorithms, at least one of the algorithms being an algorithm that is not solved in polynomial time; and a transmission control section that allows transaction data including the generated public keys, addresses, and electronic signatures to be transmitted to a P2P network.

Provided is a data protection method which includes: receiving transaction data which includes a first hash value obtained from history information of a home; obtaining, from a data server, a second hash value computed by the data server performing computation processing on encrypted history information without decrypting the encrypted history information, the encrypted history information being history information of the home encrypted using a secure computation method which enables computation without decrypting the encrypted history information, the encrypted history information being obtained from the home; verifying the transaction data, and determining whether the first hash value and the second hash value match; and when a validity of the transaction data is verified and the first hash value and the second hash value match, recording the transaction data in a distributed ledger.

The system comprises an interface and a processor. The interface is configured to receive a request from an application for authorization to access, wherein access to the application is requested by a user, and receive a task request from the application for authorization to access a task, wherein access to the task is requested by the user. The processor is configured to authenticate the request from the application for authorization to access, determine that the task comprises a sensitive task, determine a user authentication device, provide a challenge for a digital credential to the user authentication device, wherein the digital credential is backed by data stored in a distributed ledger, receive a response from the user authentication device, determine the response is valid, and provide an authorization to access the sensitive task.

Systems and methods for offering and purchasing tokenized securities on a blockchain platform meeting current and future federal, state, and offering and holding entity rules and regulations. Tokenized securities purchased during or after the tokenized securities offering are tradable on a secondary market. The server computer of the tokenized securities provides an automated transfer capability for tokenized securities holders.

A method for optimized validation of a blockchain transaction through the use of a parallel database and date management includes: receiving a new blockchain transaction that includes unspent transaction outputs; identifying, in a parallel database, a start date for a blockchain wallet involved in the new transaction; identifying a subset of blocks in the blockchain that have been added to the blockchain since the start date; validating the new blockchain transaction by validating the unspent transaction outputs using the subset of blocks; and, if the validation is successful, adding the new transaction to the blockchain, or, if the validation is unsuccessful, notifying the submitter of the failed validation.

Contributions to a work by contributors having respective levels in a defined hierarchy are recorded in one or more blockchain transactions. One or more lower-level contributors provide, to a higher-level contributor, one or more lower-level contributions respectively, and the higher-level contributor provides a higher-level contribution responsive to the one or more lower-level contributions. A higher-level contributor transaction comprises one or more inputs, which in turn comprise: one or more pointers to one or more spendable outputs of one or more lower-level contributor transactions and one or more transaction signatures. The transactions contain contributions commitments which, together with the one or more pointers, represent the relationship between the higher-level contributor and the lower-level contributors within the defined hierarchy. The one or more transaction signatures prove that relationship.

A blockchain anonymizing system and method is provided for side-channel-secure blockchain anonymity using the Invisible Internet Project (I2P). Instead of merely preventing the revelation of a user's IP address, embodiments are directed to inhibiting any correlation of the user's transactions over time.