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.

A client device comprises a first secure element and a second secure element. The first secure element comprises a first computer-readable medium having a payment application comprising instructions for causing the client device to initiate a financial transaction. The second secure element comprises a second computer-readable medium having a security key, a payment instrument, stored authentication data and instructions for generating a secure payment information message responsive to the payment application. The secure payment information message comprises the payment instrument and is encrypted in accordance with the security key.

A transaction data processing method includes: receiving a first transaction document from a device of a transaction initiator, the first transaction document being associated with identity labels of a plurality of transaction participants; separately performing identity authentication on the plurality of transaction participants according to the identity labels of the plurality of transaction participants, to obtain an identity authentication result. The method also includes adding the identity authentication result into the first transaction document when the identity authentication results indicates identity authentication of each of the plurality of transaction participants is successful, to generate a second transaction document carrying the identity authentication result; separately transmitting a signature request for the second transaction document to devices of the plurality of transaction participants; and generating a third transaction document according to responses returned by the devices of the plurality of transaction participants in response to the signature request.

Systems and methods for securely storing digital assets using a secure portal are disclosed. Using an isolated computer within an electronic isolation chamber, a plurality of digital asset accounts may be generated, and one or more private keys and a digital asset account identifier corresponding to each of the digital asset accounts may be obtained. A respective reference identifier may be associated with each digital asset account. At least one of the one or more private keys corresponding to each digital asset account may be divided into a plurality of private key segments and written to a card along with the respective reference identifier to create sets of collated cards, wherein each set comprises cards corresponding to different private keys.

Bitcoins and the underlying blockchain technology are one of the main innovations in building decentralized applications. The effects of quantum computing on this technology are analyzed in general. Provided herein are effective solutions to address security vulnerabilities in a blockchain-based system that can be exploited by a quantum attacker.

A system and method for establishing a verified computing environment for executing data-driven contracts, comprising a cryptographic directed acyclic graph object model of a data-driven contract, wherein at least a subset of the objects in the MDAG correspond to clause state of at least one programmable clause of the data-driven contract; at a computing environment, administrating the data-driven contract in accordance with the MDAG which can include at least one execution instance comprised of: receiving a contract input to contract logic of the data-driven contract, processing the input according to the clause logic, in response to the contract input, generating at least one updated state object and generating at least one output object, and for each generated object, hash-linking the generated object to an object associated with the creation of the generated object.

A method includes acquiring, at a node server, blockchain data for a blockchain address on a blockchain network. The blockchain data includes a plurality of transactions for the blockchain address. The method includes generating a local node trust score for the blockchain address based on the blockchain data. The local node trust score indicates a likelihood that the blockchain address is involved in fraudulent activity. The method includes receiving, from a plurality of remote servers, a plurality of additional local trust scores for the blockchain address. The method includes determining a consensus trust score based on the local node trust score and the plurality of additional local trust scores. Additionally, the method includes receiving a trust request for the blockchain address from a requesting device and sending the consensus trust score for the specified blockchain address to the requesting device.

An assignable realestate system includes a processor, a storage medium, a wireless device including a digital key, a lock assembly for access to realestate, a data file, and a blockchain application. The data file is stored in the medium, and includes a plurality of linked blocks. Each block includes a respective asset transaction data of a plurality of asset transaction data with each data being time stamped. The blockchain application is stored in the medium and executed by the processor. The blockchain application is configured to apply the data file to determine a current asset transaction data of the plurality of asset transaction data and output an authorization signal to the lock assembly associated with the device for access to the realestate.

Systems, methods, and apparatuses for implementing commerce rewards across tenants for commerce cloud customers utilizing blockchain technologies in conjunction with a cloud based computing environment are described herein. For example, according to one embodiment there is a system having at least a processor and a memory therein executing within a host organization and having therein: means for operating a commerce cloud platform on behalf of a plurality of merchants, in which the commerce cloud platform provides at least customer payment processing on behalf of the plurality of merchants; receiving a first purchase transaction for an unknown customer from a first one of the plurality of merchants, in which the purchase transaction indicates transaction source information; creating a new global ID for the unknown customer and associating the purchase transaction and the transaction source information with the new global ID at the commerce cloud platform; allocating commerce rewards points to the unknown customer via the new global ID based on the first purchase transaction; receiving a second purchase transaction for the unknown customer from a second one of the plurality of merchants, in which the second purchase transaction indicates transaction source information for the second purchase transaction; prompting the unknown customer associated with the second purchase transaction to confirm they are associated with the first transaction based on at least a partial matching of the transaction source information associated with the first and second purchase transactions; and inviting the unknown customer to participate in a commerce rewards program to redeem the commerce rewards points. Other related embodiments are disclosed.

An example operation may include one or more of storing a full-step hash of a data file and a reduced-step hash of the data file within a data block of a hash-linked chain of blocks of a blockchain, receiving a request from a client application to verify the data file, determining whether to provide the full-step hash of the data file or the reduced-step hash of the data file based on the request, and in response to determining to provide the reduced-hash, transmitting the reduced-step hash of the data file to the client application.