A server is connected to an electronic device and systems of a plurality of cryptocurrency exchanges over a network. An information reception unit receives first board information and second board information from systems of first and second cryptocurrency exchanges that conduct buy-sell transactions of a cryptocurrency in first and second main currencies, respectively. A conversion unit converts second limits into third limits in a first main currency based on an exchange rate between the first and second main currencies. A totalization unit calculates a total order quantity obtained by totalizing buy-sell order quantities in the first board information and the second board information, for each of fourth limits into which first limits and the third limits are joined. Third board information that includes total order quantities corresponding to the fourth limits in the first board information and the second board information is displayed on the electronic device.

Electronic watch faces can be created in customized and associated with a block chain system. More particularly, the block chain's system uses non-fungible tokens which are in general unique, to represent the ownership of a specific watch face. Users own the token and can display the watch face only while they own the token. After selling the watch face, the token is changed to represent the new owner of the token and the original owner can no longer display the watch face at that point.

A method for facilitating the exchange of a stable cryptocurrency collateralized by government-issued debt. First granularity parameters are received through a first wallet interface of a first digital wallet. A first restricted use key is generated based upon the first granularity parameters and provided to an owner of a second digital wallet. A second restricted use key is generated based upon second granularity parameters received through a second wallet interface associated with the second digital wallet. Information from a blockchain wallet is accessed using the second restricted use key wherein the information relates to one or more of an ID classification and risk score of the second wallet owner at a level of detail determined by the second granularity parameters. An indication to proceed with a transaction between the first digital wallet and the second digital wallet may then be received through the first wallet interface.

A network of computing nodes and a method of operating the computing nodes effectuate, in real-time, an international, money transfer from the bank account of a first person (the payer) in a first country to the bank account of a second person (the beneficiary) in a second, different, country.

A system, method and apparatus for providing a global service for securely storing deposit instructions is described. The service provides payment processing services with a central location to translate payee information into a revocable d-token that represents the payee deposit instructions. A second service allows qualified banking institutions to convert the d-token into deposit instructions to effectuate a funds transfer.

A package management system generates a signature for a software package and generates an indication of the signature that includes a Merkle Tree root. The package management system then initiates a transaction in a blockchain system. The transaction comprises an indication of the signature for the software package and is to be stored in a blockchain. The package management system distributes the software package to a computing device with an indication of a location of the signature in the blockchain.

An information processing device includes a processor. The processor can acquire a balance of electronic money owned by a customer. The processor can update, every time the customer purchases a commodity, a total amount of price for the one or more purchased commodities. The processor can determine whether the total amount exceeds the balance of the electronic money. The processor can provide a notification in response to determining that the total amount exceeds the balance of the electronic money.

Systems and methods for distributed ledger-based collateral movement are disclosed. According to an embodiment, a method for distributed ledger-based collateral movement may include: (1) receiving, at a first collateral custodian computer system for a collateral custodian and from a client of the first collateral custodian, a collateral asset for a target asset held by a client of a second collateral custodian; and (2) tokenizing the collateral asset and writing a collateral token to a distributed ledger platform. The second collateral custodian receives, from the distributed ledger platform, the collateral token and releases the target asset to the first collateral custodian in response to receiving the collateral token.

An example operation may include one or more of connecting, by a scheduler node, to a blockchain network comprised of member nodes, receiving, by the scheduler node, a plurality of transactions that include deadlines from the member nodes, comparing, by the scheduler node, the deadlines of the plurality of the transactions against an average time to append to a ledger (ATAL) pre-calculated for the scheduler node, dropping, by the scheduler node, the transactions of the plurality of the transactions, if a sum of the ATAL and a current time is larger than the deadlines of the plurality of the transactions, calculating, by the scheduler node, a priority usage balance (PUB) for the member nodes based on the transactions of the plurality of transactions remaining after the transactions of the plurality of the transactions have been dropped, scheduling, by the scheduler node, a transaction with an earliest deadline from the plurality of the remaining transactions to be validated first for an execution, and arranging, by the scheduler node, a validation order for the plurality of the remaining transactions based on the PUBs.

A method for using shareable and nested transaction on hash chains includes storing transaction data of a transaction of a hash chain. A lock block is appended to the hash chain. Appending the lock block includes setting a tail block identifier of the hash chain from a preceding tail block of a preceding transaction to the lock block. A data block is appended to the hash chain. Appending the data block includes setting the tail block identifier of the hash chain to the data block. The method further includes removing the transaction data from the transaction without invalidating the hash chain. The method further includes appending an updated data block to the hash chain to update the transaction with updated transaction data.