A system for “tagging” funds identified on a blockchain and associating a weight value therewith. The tagging profile is developed into a propagation profile wherein weight values are inherited from the tagging profile s. Propagation profile funds may be diluted by combining with non-tagged funds, similar to how ink dilutes through water. A spending history of funds of interest is developed based on replaying the funds of interest against the global transaction history of the blockchain. It is determined whether the spending history intersects with the propagation profile, thus determining how closely the two sources of funds are economically to one another. Intersection triggers actions including alert notifications or transfer of funds on the blockchain.

Disclosed are methods for exchanging transaction data, including transmitting a first public encryption key and transaction data associated with a transaction to a computing device via a near field communication (NFC) connection, receiving a second public encryption key and a transaction message associated with the transaction via the NFC connection, and appending the second public encryption key and the transaction message associated with the transaction to a database stored in a memory in communication with at least one integrated circuit, wherein the at least one integrated circuit is powered by an electromagnetic field generated by the computing device. Systems and computer program products are also provided.

It is provided the technology to ensure the execution of proper transactions. One aspect of the present disclosure is an escrow system that includes a group of nodes and a blockchain network that connects each node of the group of nodes. In the escrow system, an escrow node sets, with respect to a transaction relating to a product or a service between a user and a first node, a multi-signature address between the first node and the escrow node in the blockchain network. The first node, in response to a completion notification of payment of a cost relating to the transaction by the user to the escrow node, executes the transaction and transmits a signature and a fulfillment notification of the transaction to the multi-signature address. The escrow node, in response to an execution of the transaction by the first node, transmits a signature and a fulfillment notification of the transaction to the multi-signature address. The first node, in response to the signature and the fulfillment notification of the transaction from the first node and the escrow node to the multi-signature address, receives a payment notification of the cost.

A control method is executed by a first node holding a first distributed ledger in which a first blockchain is managed, and includes: obtaining, from a second node, a second blockchain managed by a second distributed ledger held by the second node, and comparing the second blockchain with the first blockchain; updating the first blockchain by adding the greater of at least one first different block contained in the first blockchain but not the second blockchain and at least one second different block contained in the second blockchain but not the first blockchain, after at least one common block, and adding at least one additional block containing at least one instance of transaction data contained in the lesser; and determining whether at least two instances of transaction data each containing at least two instances of contract information that conflict with each other are contained in the updated first blockchain.

Systems and methods for providing user-controlled access to prescribed medications are provided. A cloud-based prescription database includes prescriptions, each associated with a unique patient identifier, locations of pharmacies, and available stock for the pharmacies. A unique patient identifier is received from a user device and the related prescriptions are retrieved from the database and displayed for user selection. Pharmacies which are geographically proximate to a location of the given user device which report availability of the medication associated with the user selected prescription are displayed at a map at the given user device.

The disclosed computer-implemented method for incentivizing sharing of transaction information may include receiving transaction data of a transaction between a user and a merchant. A portion of a transaction amount may be reserved. The method may include receiving the reserved portion for adding to a fund and aggregating the transaction data with collected transaction data from a plurality of users. The method may further include providing the aggregated transaction data. Various other methods, systems, and computer-readable media are also disclosed.

A control method including: receiving first transaction data including a first electronic signature from the a home of a first user; verifying whether the received first electronic signature included in the first transaction data is valid; verifying validity of the received first transaction data; when the first electronic signature and the validity of the first transaction data are verified successfully, executing a first consensus algorithm for the first transaction data; and when the validity of the first transaction data is verified according to the first consensus algorithm, recording a block including the first transaction data in a distributed ledger. The first electronic signature is a group signature assigned to a group to which the first user belongs.

A method for coordinating transactions for domain names to register a plurality of domain names with a domain name portfolio stored in a storage, such that each of the domain names in a plurality of domain names belongs to only the domain name portfolio as a unique member of the domain name portfolio; associate a portfolio account with the domain name portfolio, the portfolio account configured for managing a pool of funds available for use in payment of the transactions for said each of the domain names of the plurality of domain names; receive credit payment instructions attributed to the portfolio account, the credit payment instructions containing a credit payment amount; record the credit payment amount against the pool of funds in order to increase a level of the pool of funds; receive debit payment instructions associated with a domain name of the domain name portfolio and domain name transaction information associated with the transaction for the domain name; record the debit payment amount against the pool of funds in order to decrease the level of the pool of funds; and generate and send a periodic report over the network detailing the level of the pool of funds and the transaction applied against two or more of the domain names as members of the domain name portfolio.

Provided are systems and methods for auto-performing short-term investments on an intermittent basis via a crypto-network and returning the principal and interest before the cash is needed. As an example, the method may include installing a blockchain smart contract on a blockchain ledger with read access to content stored on the blockchain ledger, establishing a communication channel between a monitoring engine and the blockchain smart contract, configuring the monitoring engine to identify stop conditions from content stored on the blockchain ledger, monitoring the blockchain ledger for updates to content stored on the blockchain ledger via the communication channel and detecting a stop condition based on an update to the blockchain ledger via the monitoring engine, and in response the detected stop condition, transmitting a request to the crypto-exchange server to return the funds to the external data source.

The present disclosure generally relates to methods and user interfaces for managing information on computer systems. In some embodiments, methods and user interfaces for managing display of user interface elements based on movement of the computer system and requesting account information are described. In some embodiments, methods and user interface for provisioning an account onto a computer system are described. In some embodiments, methods and user interfaces for associating a transfer amount with an account are described. In some embodiments, methods and user interfaces for displaying user interface elements corresponding to transaction types are described. In some embodiments, methods and user interfaces for managing one or more pending loans are described. In some embodiments, methods for entering a numeric sequence are described. In some embodiments, methods for locking a computer system while entering a number sequence are described.