Methods and systems for conducting a debit card-based transaction using by a user having a crypto-currency account. A user may enter a smart contract between the user and an externally owned account (EOA). Then based on the smart contract an authorizing entity may allow or deny a transaction request from a point-of-sale device to the card processor based on confirmation of the on-chain transaction.

Techniques for routing to content within a mesh network based on a blockchain are provided. An electronic device can receive data from a mesh network to establish the device as a node on the mesh network. The established node can generate a cryptocurrency wallet that can be loaded with an amount of cryptocurrency. A blockchain can store searchable transactions related to content stored within the mesh network. The established node can search the blockchain to locate content and can transmit a request for certain content. The established node may issue a payment to a node hosting the requested content and/or to any intermediate nodes facilitating the established node's access to the content.

A digital currency mining device and a digital currency mining management method are provided. The digital currency mining device includes a processing module and a resource allocation module. The processing module provides a resource to execute at least one mining task and at least one display task. The resource allocation module is electrically connected with the processing module, confirms whether the processing module includes one display task in execution or not, and adjusts the resource provided for the mining task by the processing module according to the display task in execution.

Systems and methods for distributed ledger-based intraday trading are disclosed. In one embodiment, a method may include: receiving a digital representation of an amount of collateral for a cash borrower; receiving a digital representation of an amount of cash for a cash provider; receiving agreement from the cash borrower and the cash provider to terms of an intraday trade comprising a duration of the intraday trade, a collateral trade amount of the collateral, and a cash trade amount of cash; a smart contract executing the intraday trade by providing the trade amount of the digital collateral to the cash provider and the cash trade amount of the digital cash to the cash borrower; and the smart contract returning the trade amount of the digital collateral to the cash borrower and the cash trade amount of the digital cash to the cash provider at the completion of the intraday trade.

The disclosed system and methods advantageously track credits from generation through ownership trades to retirement; raw data will be submitted to one blockchain or a conventional database, while credit transactions will be tracked on a separate blockchain. This system leaves a simple audit trail, significantly reducing the time and cost associated with reconciliation and auditing and enables producers to monetize their credits quickly after generation. Importantly, while microtransactions are currently prohibitively expensive, the use of blockchain technology enables smaller producers to participate in credit programs, and incentives to be designed at the consumer level.

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 financial engineering innovation involving a decentralized stable unit of account. This disclosure provides for a hybrid stablecoin of type cryptocurrency backed/non collateralized without a central counterparty by enabling participants to separate and transfer both volatility risk and event risk through an open source smart contract. Stablecoins are created and loaned out when cryptocurrency coins, tokens or other blockchain units are placed into the system as collateral and backed by insurers. Stablecoins are placed into the system as collateral and cryptocurrency coins, tokens or other blockchain units are loaned out and the loan backed by insurers.

A blockchain configuration may provide a simple and secure infrastructure for students to identify subject matter experts as tutors and career mentors, as well as earn scholarship funds in the form of microtransactions of digital currency. One example method may comprise one or more of transmitting a query to a network of nodes to respond in exchange for a microtransaction reward of digital currency; receiving a plurality of responses from the network of nodes; determining one or more best responses from among the plurality of responses; transmitting the reward to the one or more nodes that provided the one or more best responses; combining data related to the query, responses, best answers, and microtransactions into a block of data; and recording the block of data on a blockchain. The method may also include validating the query and plurality of responses in exchange for a microtransaction according to a blockchain proof-of-work configuration.

A method for a node to issue a new block is used for a distributed system in which transactions and records are organized in block. The method comprises the steps of: determining a value R from a common reference string; computing a value s associated to a value of a status with a private key at a node, wherein the private key is a private signing key corresponding to the node, and the value s can only be computed by the node with the private key; computing a value r by taking the value s into a function H at the node, wherein the value r is unpredictable and unique to other nodes; and determining whether the node obtains a right to issue a new block by taking the values R and r into a function V.

An example operation may include one or more of receiving, by a data server node, requests for data from a plurality of user nodes connected to a blockchain, retrieving, by the data server node, the data from the blockchain, dividing, by the data server node, the data into a plurality of portions and generating copies of the plurality of the portions, changing, by the data server node, at least one bit in each of the copies, encrypting, by the data server node, the copies and recording the copies into blocks on a second blockchain, recording, by the data server node, a plurality of sequence numbers of the blocks, and storing, by the data server node, the plurality of the sequence numbers on a second blockchain to be accessed by the plurality of the user nodes.