Disclosed are systems and methods for generating a blockchain data structure for executing an employee stock ownership plan. The described system generates and deploys within a blockchain an employee stock ownership plan (ESOP) smart contract that is associated with a subset of equity tokens representing an equity stake of a company. The ESOP smart contract has program code for constructor functionality that creates a plurality of stock option tokens corresponding to the subset of the equity tokens in the first electronic wallet associated with the company, and code for transfer functionality that converts at least a portion of the stock option tokens in a second electronic wallet to a corresponding amount of equity tokens in accordance with one or more verification rules and checks.

Systems and techniques are provided for a resource stabilization in a distributed network. A computing device in a distributed network may check the median value of a transactional resource in relation to a specified external resource. The computing device in the distributed network may compare the median value of the transactional resource to a threshold value for the transactional resource to determine whether the median value of the transactional resource is above the threshold value or below the threshold value. The supply of the transactional resource in the distributed network may be increased in response to determining that the transactional resource is above the threshold value or may be in response to determining that the transactional resource is below the threshold value.

This invention is in the field of private cryptographic transactions and discloses a method to create completely private escrow and swap transactions using a private or zero knowledge proving system.

A system and methods directed to crypto coins based on kinetic energy produced by human movement, allowing decentralized distribution of the cryptocurrencies. The decentralized system and methods operates with a very low or no consumption of current, and may further harvest kinetic energy, saving electrical power such as electricity power, battery power and the like.

Cash grid techniques or systems are disclosed that provide a centralized tracking service for physical and digital currency. In operation, physical digital currency can be associated with, and otherwise tracked between, a mobile wallet and to the cash grid using unique ledger and communication systems and methodologies. A trusted bank or other entity can provide a machine which can convert physical cash to virtual cash. As part of the conversion from physical to digital currency, the identification (ID) (e.g., serial number) of the physical cash is transferred to and linked to the virtual (or digital) cash.

Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for implementing a mutual aid network. One of the methods includes maintaining a particular blockchain specifically for handling requests for aid from a group of members; receiving transaction data encoding user responses to queries from the blockchain network for requesting the user responses regarding a particular request for aid; executing the smart contract using the particular blockchain to process the transaction data; in response to response results indicating that sufficient user responses have been received from the members of the subset of the group, and that a sufficient percentage of the subset of the group have agreed to the particular request for aid, computing an amount of contribution due to each member of the group; and instructing a gateway to trigger the amount of contribution to originate from each member of the group.

The present invention relates to a method and a system for inscribing and securely storing cryptographic keys on a physical medium, and to a corresponding physical medium, comprising the following steps: from a first management entity (31), generating (1) a first pair of asymmetric cryptographic keys comprising a first user public key (pub1) and a first user private key (priv1), inscribing (2) the first user private key (priv1) onto a physical medium, and affixing (4) a first tamper-evident concealing element (hol1) to the physical medium in order to conceal the first user private key (priv1) and seal same, said first user private key (priv1) being accessible only by visibly breaking said first tamper-evident concealing element (hol1); from the second management entity (32), generating (6) a second pair of asymmetric cryptographic keys comprising a second user public key (pub2) and a second user private key (priv2), inscribing (7) the second user private key (priv2) onto the physical medium and affixing (9) a second tamper-evident concealing element (hol2) to the physical medium in order to conceal the second user private key (priv2) and seal same, said second user private key (priv2) being accessible only by visibly breaking said second tamper-evident concealing element (hol2); generating (10) at least one last user public key (pub0) and/or at least one cryptographic address (adr, adr-mult) from the first user public key (pub1) and the second user public key (pub2), inscribing (11) said at least one last public user key (pub0) and/or said at least one cryptographic address (adr, adr-mult) onto the physical medium, and verifying (12, 13) same, and finally recovering the private keys (priv1, priv2) comprising the generation of a last user private key (priv0) corresponding to the last user public key (pub0) and/or to said at least one cryptographic address (adr, adr-mult).

A method comprising automatically assigning cryptographic tokens to cryptocurrency wallet addresses via a smart contract hosted on and executed by decentralised virtual machines of a decentralised network, storing received transaction history data in a transaction database; analysing and matching purchase transactions in the stored transaction history data by calculating a matching accuracy score; applying a predetermined reward rule on matching purchase transactions that have a calculated matching accuracy score above a predetermined matching threshold; wherein the predetermined reward rule comprising: calculating an amount of cryptographic tokens to be assigned at least based on an amount of the matching purchase transaction; and assigning the calculated amount of cryptographic tokens to a cryptocurrency wallet address of a user via a blockchain transaction by digitally signing the blockchain transaction with a private key.

A settlement device can acquire a payment amount and a balance of electronic money. When the balance is less than the payment amount, the settlement device gives a notification of a necessary charging amount set based on an amount of money obtained by subtracting the balance from the payment amount. The settlement device receives an input of money. When the necessary charging amount is notified and an input of money equal to or greater than the necessary charging amount is received, the settlement device settles a transaction by updating the balance to the amount of money obtained by subtracting the payment amount from the amount of money obtained by adding the input amount of money to the balance.

Provided is a payment system using virtual money. The payment system includes: a transaction server for managing floating exchange rate money and fixed exchange rate money; and an exchange server for exchanging floating exchange rate money for fixed exchange rate money, whereby a payment system can provide users with fixed exchange rate money which is virtual money, the exchange rate of which is fixed against cash.