Systems and methods are disclosed for providing context-aware selection and recommendation of applications and services on a mobile device. The selection of the preferred applications is based on the context of the user and the context of the applications. A comparison engine related to a recommendation module performs a similarity computation between context attribute vectors of the user and the applications. Based on the similarity computation, a rank-order is produced that determines in what order the application icons should be presented to the user. A digital wallet is also disclosed that maintains the reward points awarded to the user as crypto/virtual tokens based on the instant principles. Unlike prevailing techniques, the reward points are awarded in a context-aware manner after reconciling the conflicting or contradictory usage habits of the user.

Systems and methods are provided for recording ownership information in a distributed ledger (such as a blockchain), and for performing application processing utilizing the distributed ledger. An example server computer system is configured to: record on a blockchain ownership information of an asset; to configure, for each owner of the asset, a digital wallet associated with a private cryptographic key and at least one blockchain address; using a blockchain address from a digital wallet to access ownership information in the blockchain; perform application processing using the accessed ownership information; and record in the blockchain, updated ownership information or other information associated with the ownership information in accordance with the performed application processing.

In one implementation, a computer-implemented method, executed on a computing device and configured to effectuate a trading platform, includes: maintaining an omnibus (multi-client) cryptocurrency trading wallet for a plurality of clients; and maintaining a segregated (individual-client) cryptocurrency transfer wallet for each of the plurality of clients, thus defining a plurality of segregated (individual-client) cryptocurrency transfer wallets.

A computer system comprises a logic system, and, operatively coupled to the logic system, a computer-memory system holding instructions that, when executed by the logic system, cause the computer system to: receive a token-behavior selection corresponding to a real-world asset to be tracked on a virtual ledger; receive a virtual-ledger architecture selection identifying a provider-defined architecture of the virtual ledger; construct a template for registration of a token class on the virtual ledger according to the provider-defined architecture of the virtual ledger, wherein each new token instantiated from the token class exhibits a set of behaviors determined by the token-behavior selection; and provide access to the template to a client computer device.

A package management system to initiate a transaction in a blockchain system. The transaction comprises an indication of the signature for the software package and is to be stored in a blockchain. The package management system distributes the software package to a computing device with an indication of a location of the signature in the blockchain.

A method and system of recording multiple transactions between a multiple of users on a blockchain (9), including a first transaction (22) from a first user (5) to a second user (7) and a second transaction (24) from the second user (7) to the first user (5). The blockchain may be, for example, the Bitcoin blockchain. The method may include receiving (110) a first request from a first node (15) associated with the first user (A) to transfer a first quantity of cryptocurrency associated with the first transaction (22) and receiving (120) a second request from a second node (17) to transfer a second quantity associated with the second transaction (24). The first transaction (22) is conditional on receiving (120) the second request and the second transaction (24) is conditional on receiving (110) the first request. The method also includes verifying (130) the first request and second request that includes determining both the conditional steps of receiving the first request and second request are satisfied. Based on verifying (130) the first request and second request, the method includes sending (140) a data output to the blockchain (9) to record the transfers of cryptocurrency associated with the first and second transactions (22, 24).

A loan process smart contract manages a collateralized loan process for a loan against a collateralized item, the collateralized loan process includes tokenizing and locking a collateral token that tokenizes the collateral item, monitoring terms of the loan, and detecting an unlocking event of the loan for unlocking the collateral token. Locking the collateral token is facilitated by use of a distributed ledger with a plurality of accounts including a user account and a locked collateral token escrow account.

The present invention involves implementing a passive mechanism for creating new cryptocurrency tokens by a user of the cryptocurrency. The invention further avoids the need for the creation of new blocks to receive tokens. The invention allows users to make a profit and participate in the growth of the system without being required to maintain a system node. By lowering the threshold for entering into beneficial status via use of a cryptocurrency, it reduces the risk to users, as the user's account automatically creates new tokens that at least partially compensate for losses in case of depreciation, or ideally provides a profit in case of the cryptocurrency's value growth or stability. The volatility of the currency is partially compensated and decentralization is increased via creation of new tokens by many accounts, each account having some balance, instead of providing tokens only to those users forging blocks.

An exemplary transaction sharding method comprises splitting a distributed ledger into a plurality of shards; and storing a shard across the subgroup of computer nodes associated with the shard. Such a method further comprises assigning a new transaction to one of the plurality of shards, wherein assigning the new transaction comprises iteratively choosing one of the plurality of shards; in each iteration, determining a transaction-to-shard score measuring a probability that a subgroup of computing nodes associated with the chosen shard for the current iteration would be involved in a same-shard transaction for the new transaction; in each iteration, determining a latency-to-shard score by estimating a confirmation latency of the new transaction under the chosen shard for the current iteration; and selecting the new transaction to be assigned to the shard based on a combination of the transaction-to-shard score and the latency-to-shard score.

A method for acceptance of blockchain payment at a traditional point of sale device direct to a merchant includes: receiving an authorization request for a fiat payment transaction including a transaction account number, transaction amount, and merchant identifier; identifying blockchain payment acceptance for a transaction account associated with the transaction account number; transmitting an address request to an exchange server including the merchant identifier; receiving a destination address associated with the merchant identifier for a blockchain network from the exchange server; transmitting a new blockchain transaction to a blockchain node in the blockchain network including the destination address and a cryptocurrency amount based on the transaction amount; and transmitting an authorization response for the fiat payment transaction to a payment network for routing to a point of sale device, the authorization response including an indication that clearance and settlement of the fiat payment transaction is not required.