A transaction device is described. The device comprises storage configured to store a first data record comprising first value data and a unique identifier associated with one other device; communications circuitry configured to receive an identifier and second value data from a device; and control circuitry configured to compare the received identifier with the unique identifier and in the event of a positive comparison, the control circuitry is further configured to update the stored first value data in accordance with the exchanged second value data.

A method for optimizing blockchain storage size through use of relative values includes: receiving, by a blockchain node in a blockchain network that manages a blockchain, a plurality of blockchain data values, each including unspent transaction outputs, at least one destination address, and, for each destination address, an original currency amount; identifying a base value; modifying the original currency amount included in each blockchain data value to be a relative currency amount based on a difference between the identified base value and the original currency amount; generating a new block, the new block including a block header and the modified plurality of blockchain data values; and transmitting the generated new block to a plurality of additional nodes in the blockchain network.

A method and system include providing a user interface associated with an issuer of an account; receiving, at the user interface, a request to generate a token associated with a user account; generating at least one token associated with the user account; authenticating one or more elements associated with the user account, wherein authentication may be one of prior to and subsequent to the generation of the at least one token; and receiving the at least one token. Numerous other aspects are provided.

An electronic notification apparatus is disclosed. The electronic notification apparatus may include an image capture device which can scan a machine readable code on a physical object. A communication may thereafter be initiated to complete the transfer of the physical object to a user.

An electronic notification apparatus is disclosed. The electronic notification apparatus may include an image capture device which can scan a machine readable code on a physical object. A communication may thereafter be initiated to complete the transfer of the physical object to a user.

A distributed cryptocurrency smart order router (DCCSOR) is disclosed, which allows clients to keep control of their own private and exchange keys to their wallets and accounts, but can execute orders across multiple exchanges simultaneously.

Transaction-enabled systems and methods for royalty apportionment and stacking are disclosed. An example system may include a plurality of royalty generating elements (a royalty stack) each related to a corresponding one or more of a plurality of intellectual property (IP) assets (an aggregate stack of IP). The system may further include a royalty apportionment wrapper to interpret IP licensing terms and apportion royalties to a plurality of owning entities corresponding to the aggregate stack of IP in response to the IP licensing terms and a smart contract wrapper. The smart contract wrapper is configured to access a distributed ledger, interpret an IP description value and IP addition request, to add an IP asset to the aggregate stack of IP, and to adjust the royalty stack.

The present disclosure generally relates to techniques for managing contextual transactions. In some examples, at a sender electronic device, a first user provides authorization to purchase an item for a second user. In some examples, at a recipient device, the second user selects one or more attributes for the item and requests to claim the item. In some examples, an electronic device displays a representation of an item and a purchase affordance for purchasing the item using a payment system that is available on the electronic device.

The present disclosure generally relates to techniques for managing contextual transactions. In some examples, at a sender electronic device, a first user provides authorization to purchase an item for a second user. In some examples, at a recipient device, the second user selects one or more attributes for the item and requests to claim the item. In some examples, an electronic device displays a representation of an item and a purchase affordance for purchasing the item using a payment system that is available on the electronic device.

A system and method for preventing hacking of blockchain is proposed. The system includes a cryptocurrency owner configured to own a cryptocurrency wallet storing a cryptocurrency, a public key, and a private key, and capable of setting monitoring-subjected data and monitoring-excluded data, a hacking countermeasure system configured to check status of the cryptocurrency wallet by being connected to the cryptocurrency owner to receive the cryptocurrency and the public key, invalidate a hacking transaction when the hacking transaction matching the monitoring-subjected data is received, and allow the cryptocurrency to be traded by opening the cryptocurrency wallet with the private key and process transaction details into a block file when a monitoring-excluded transaction matching the monitoring-excluded data is received, and a blockchain network configured to receive the block file from the hacking countermeasure system and duplicate the block file into a plurality of block files to distribute and store each block file.