A first device listens for a communication token across an audio bandwidth covering a transmit frequency one or more audio frequency broadcasting device. The first device receives at least one token broadcast from the one or more broadcasting devices. The first device demodulates and decodes each received token. One or more computing devices validates each decoded token. The first device determines, based on the validating, a broadcasting device of the broadcasting devices with which to establish a communications channel The one or more computing devices generates a response token based on the token received from the determined device. The first device broadcasts the generated response token in a response band of the determined device. The determined device demodulates decodes, and validates the token broadcast from the first device. Upon determining the token broadcast from the first device valid, the first device and the determined device establish a wireless communication channel.

The invention relates to distributed ledger technologies such as consensus-based blockchains. Computer-implemented methods for smart contract outcome determination are described. The invention is implemented using a blockchain network, which may be, for example, a Bitcoin blockchain. A set of conditions is determined between counterparties, with the set of conditions having a plurality of possible outcomes that includes a first possible outcome associated with a first distribution of a digital asset and a second possible outcome associated with a second distribution, different from the first distribution, of the digital asset. A counterparty transaction is created that includes, as output, the set of conditions encoded into computer-executable instructions and the digital asset. An outcome is received from a third party, with the outcome corresponding to the first possible outcome or the second possible outcome. An outcome transaction is created to transfer control of the digital asset of the counterparty transaction, the outcome transaction including the outcome as input. As a result of validating the outcome transaction at a node in a blockchain network, the digital asset is distributed, based at least in part on the outcome, to the counterparties in accordance with the first possible outcome or the second possible outcome.

The invention relates to distributed ledger technologies such as consensus-based blockchains. Computer-implemented methods for smart contract outcome determination are described. The invention is implemented using a blockchain network, which may be, for example, a Bitcoin blockchain. Assent to determine an outcome of a set of conditions is communicated to a set of counterparties, with the set of conditions having a first possible outcome and a second possible outcome. A first private key share corresponding to the first possible outcome and a second private key share corresponding to the second possible outcome are generated using a secret sharing protocol. An amount of a digital asset is transferred to an address associated with a first blockchain transaction. As a result of determining the outcome to be the first possible outcome, the first private key share is revealed within a particular time frame, with the first private key share usable, at least in part, by the set of counterparties to determine the outcome. The blockchain transaction is caused to be validated at a node in a blockchain network.

A central computer system transforms identification information of a consumer into an identity code that hides the identification information and stores it with contact information of a consumer's computer system. When a computer system on the network of the central computer system conducts a transaction with a subject who uses the identity code of the consumer, the central computer system contacts the consumer's computer system so that the consumer can stop the transaction if it is not authorized. Because only the identity code is used to protect the consumer, the original identification information of the consumer is fully protected.

A central computer system verifies the identification information and the financial account information provided by consumers through a network of computer systems. Innovative computerized methods are used for the verification. After the verification, when a computer system on the network conducts a transaction with a consumer, the central computer system sends an alert to the consumer so that the consumer can stop the transaction in real time if the transaction is unauthorized.

A computerized method produces an identity code to identify each subject stored in the computer systems connected to a computer network while protecting the privacy and confidentiality of the subject. A central computer system receives an identity code of a suspect of a financial crime and sends the identity code to all computer systems connected to the computer network. The computer systems that have the matched identity code send the requested information to the central computer system. As a result, law enforcement organizations can eliminate crimes and financial institutions can recover the money stolen from them. In addition, law enforcement organizations and financial institutions can identify money launderers that are missed by their anti-money laundering transactional monitoring systems.

A system is provided that includes a distributed database system (DDS) and a cloud computing platform that includes a reward system. The DDS includes a network of blockchain nodes that collectively store a distributed ledger of a blockchain. The DDS can also store a pool of digital crypto tokens for an organization and control distribution of the digital crypto tokens to users associated with the organization via a smart contract module that validates transactions involving the digital crypto tokens using smart contracts for each transaction to directly control peer-to-peer transfer of transferrable digital crypto tokens between the users under certain conditions. The reward system includes a reward module that can issue granted digital crypto tokens to users as a reward when they perform certain tasks. Each granted digital crypto token quantifies time spent performing a certain task and serves as a currency within the organization.

The systems and methods on a blockchain platform for one or more intermediaries for services including proxy re-encryption, independent audit, multiple-signatures based smart wallet associated with a smart contract and split-key authentication to achieve secure passwordless login. Proxy re-encryption by receiving a ciphertext from a first user with condition parameters that has been encrypted with a dynamically selected encryption algorithm. Audit service receiving an encrypted file from a user for storage on the blockchain platform; enforcing the security policy parameters for all access requests to the file on the blockchain platform; and optionally providing audit report of the encrypted file storage and access. A smart wallet with a group key using multiple signatures based on receipt of a threshold number of signatures. Split-key authentication by splitting the private key into two or more parts; and assigning the split private key part to two or more client devices.

The invention relates to the field of medicine, namely to a set of actions, technologies and measures used in provision of medical care by means of remote means for remote provision of patients with prescription medicines by means of the information system of electronic prescriptions. The method of automated provision of a patient with an electronic prescription for prescription medicines includes obtaining a unique electronic prescription identifier with prescribed medicines by a patient, which according to the methods of automated delivery of prescription medicines to a patient by means of a unique electronic prescription identifier includes obtaining the prescribed medicines by a patient personally in the points of sale of medicines or by remote delivery. The technical result of the proposed invention is to develop methods for provision of a patient with an electronic prescription and prescription medicines by means of the information system of electronic prescriptions that implement the possibility to verify originality of each individual medicine in the order and the entire order upon its receipt by means of the server of validation of security elements, error-free identification of a person and elimination of abuse and attempts of identity substitution during identification by means of convenient process of identification and authentication at all stages, different levels of control at the stages of prescribing and dispensing for certain groups of medicines, use of different levels of identification and authentication of the patient during dispensing of medicines, by means of standard and multi-factor authentication, control over circulation of medicines at each stage of their movement at the level of each individual primary package of the medicine by means of the goods movement recording service, control over authenticity of origin of the medicines at each stage of their movement by means of the server of validation of security elements.

Methods and systems for blockchain token-based access control in which an access control rule sets an access condition that is satisfied if a wallet address holds one or more specified non-fungible tokens or tokens having specified attributes. To conduct in-person or on-location token-based gating, the system may employ pre-authentication of a wallet address. An identifier may be stored securely on both the system and a user device following pre-authentication. When seeking access, a user device provides identification data generated based on the identifier and the system verifies that the identification data was generated based on the identifier and, on that basis, retrieves a pre-authenticated wallet address. It then verifies using blockchain data that the wallet address holds the requisite token or tokens to satisfy the access condition.