A method for filtering blockchain value transfer transactions and updating filtering including receiving a transaction request comprising an indication that the transaction request is associated with an update to an existing transaction smart contract, defining an updated transaction smart contract, applying a filter smart contract to the transaction request, and recording to a log an indication that the updated transaction smart contract was made to the existing smart transaction contract, responsive to the applying the filter smart contract.

According to an example aspect of the present invention, there is provided a method, comprising: receiving an input ordered set of transactions after a genesis block or a preceding compressed block in a chain of blocks, generating a compressed block on the basis of the input ordered set of transactions, wherein processing of the compressed block results to an equivalent final state as processing of the input ordered set of transactions, and providing the compressed block to a distributed network for establishing a new chain epoch and replacing a set of uncompressed blocks associated with the input ordered set of transactions.

Systems and methods for establishing and fulfilling a smart contract between users and service providers are disclosed. A method includes creating, by one or more nodes in a computer network, a smart contract in response to a request from a user for services and providing the smart contract to a blockchain. The method then includes notifying service providers of the smart contract and receiving responses to the notifications from the service providers. Then the method includes identifying one or more service providers that can complete the service. The method then includes updating the smart contract to include data about the identified service providers. The updated smart contract includes account information for a user account of the user, and account information for service provider accounts of the identified service providers. Then a value interaction is initiated that pushes value from the user account to the service provider accounts.

A computer implemented method for operating a token management system includes: generating the first plurality of request messages; generating a first plurality of public tokens; augmenting each of the first plurality of request messages with one of the first plurality of public tokens, the augmenting resulting in a first plurality of augmented request messages; transmitting the first plurality of augmented request messages to the first plurality of market participants; generating a second plurality of public tokens based on the first plurality of public tokens; querying a database of financial messages for any financial messages including any of the second plurality of public tokens; and associating a plurality of financial messages including any of the second plurality of public tokens with each other.

Systems and methods for transferring value. A method includes posting, by a user device to a blockchain, a deposit transaction comprising a deposit value and conditions and updating, by the user device, a state according to a transaction amount. The method also includes transmitting, by the user device, a state update of the state to a server computer and responsive to transmitting the state update, and receiving, by the user device, a payment complete message comprising a tuple from the server computer. The method also includes verifying, by the user device, the conditions and processing, by the user device, a server deposit transaction on the blockchain in response to verifying.

A bridge service is provided to support multi-user simulated contactless cards that in response to receiving a request to provision a secure element with payment card profile information of a user, provisions a token representing the payment card profile, converts the token representing the payment card profile into a format for the payment application; and provides the payment card profile to the payment application, the payment card profile comprising a single use key. The bridge service enables simulated contactless cards to store payment card information for a user on volatile memory instead of the persistent, secure element memory.

A method for maintaining state and event information for all of a user's devices associated in a common location using a blockchain where each block includes an event block and a device block within it, where each event and device block refers to an earlier block of the respective type, resulting in a blockchain-in-a-blockchain architecture. The device and event blocks store data regarding each device associated with a user and events related to the devices/user, respectively. Any time a new event occurs, or a device is registered or removed, a new set of blocks is created, where submissions regarding device changes or events can be made by any participant due to the decentralized and public nature of a blockchain. The result is a system where all data regarding a user's registered devices and events is kept in a common location in a manner that is auditable and verifiable.

Various embodiments provide management of virtual goods. In some embodiments, a gaming platform can be used to provide a secure ledger system for recording money transfer, play action, bets, analytics, gaming statistics, and the like, which are associated with virtual goods. Non-limiting examples of virtual goods comprise: characters; badges/icons; gameplay attributes; virtual money; cryptocurrencies; tokens; digital gifts; gameplay levels/add-ons; and prizes, among other examples. In some examples, gaming systems can directly interact with the distributed multi-ledger architecture for secure and transparent transactions which can also be accessed by auditors, tax authorities, partners, and/or other entities. Some examples may use private and/or public blockchains as part of the distributed multi-ledger gaming architecture. For instance, multiple distributed network nodes may be utilized to manage transaction records.

Some implementations of the disclosure are directed to receiving, at an authentication server system, a distributed ledger address transmitted by a client device to identify itself during an authentication process for accessing a network, where the distributed ledger address corresponds to a distributed ledger network; transmitting an authentication challenge message from the authentication server to the client device; in response to transmitting the authentication challenge message from the authentication server to the client device, receiving at the authentication server, a response to the challenge message including a signature; and using at least the distributed ledger network to determine if the signature used to sign the response to the challenge message is associated with the distributed ledger address transmitted by the client device.

An example operation includes one or more of displaying, on a transport display, first data from a device detachably attached to a transport and displaying, on the transport display, second data from a device affixed to the transport. The second data is overlaid on the display proximate to the first data.