A method for listing document transformation and recordation is provided. Documents relating to a real estate listing are identified and each document includes data fields associated with data field identifiers. A data value is received from a user in at least one of the data fields. A data model includes the data values received from the user and the data field identifiers of the data fields for which the data values are received is generated. The data fields associated with data field identifiers that match the data field identifiers of the data fields in which the data values are received are identified and populated with the data values. One or more correctness rules to be applied to the populated data fields of the documents are identified and applied to the documents by verifying that the data values populating the data fields are verified by one or more authoritative sources.

In some embodiments, an apparatus includes an instance of a distributed database at a first compute device configured to be included within a set of compute devices that implement the distributed database. The apparatus also includes a processor configured to define a first event linked to a first set of events. The processor is configured to receive, from a second compute device from the set of compute devices, a signal representing a second event (1) defined by the second compute device and (2) linked to a second set of events. The processor is configured to identify an order associated with a third set of events based at least one a result of a protocol. The processor is configured to store in the instance of the distributed database the order associated with the third set of events.

Provided herein are devices, systems, methods and various means, including those related to providing a community internet drive that may utilize a centrally-managed hub as well as storage devices distributed among various networked machines. In some embodiments, the community internet drive can also include features to enable its users to promote and utilize the user's trusted personal relationships while also enabling an open platform for peer-to-peer and/or other types of sharing schemes.

A system and method for providing reputational information on users involved in transactions is detailed. The method includes evaluating fulfilment of transactions, particularly in the context of contracts, and providing a record of that on a blockchain through reputational information, which can be retrieved later. Similar reputational information for other transactions can be retrieved and linked to the same user, based on a hash of a master public key for a user. Aggregate reputational information can be computed from pieces of reputational information retrieved. The evaluation and record provision can be implemented using a deterministic finite automaton (DFA). For each user involved in each contract, the DFA not only configures and allows for implementation of the contract, but also considers the extent of fulfilment of the contract's terms. The DFA generates reputational information in relation to each user in each contract, and this reputational information is published to and stored on the blockchain.

A system and method for distributing data are provided. The system for distributing data which manages the distribution of data from one or more data transmitting nodes to a data receiving node, according to one embodiment of the present invention, comprises: an off-chain pool management unit; an integrity authentication unit; a data distribution verification unit; and a block chain storage unit.

A highly reliable data archival and retrieval method that enables fine grained control over data availability is implemented across a Quality of Service driven archival system, configured to fragment the data into data and parity chunks for storing onto the storage node. The technique employed by the archival system enables files to be read without having need to access any metadata, thereby tolerating complete loss of such metadata. Further, the Quality of Service driven system architecture improves upon the system performance and throughput by means of a storage node regeneration process which ensures balanced load on participating storage node during various storage, retrieval and regeneration operations.

A method of constructing a high-performance anti-tampering database based on blockchain includes: acquiring change increment information corresponding to data to-be-stored through at least one of database nodes and storing the change increment information as bottom-layer data of all the database nodes based on a blockchain data structure; determining resultant data information based on the change increment information, indexing and then storing the resultant data information as top-layer data of all the database nodes; performing mutual-checks on stored top-layer data as per a predetermined mutual-checking period and performing self-checks on stored bottom-layer data as per a predetermined self-checking period, by the database nodes; and restoring the bottom-layer and/or top-layer data of the database nodes according to results of mutual-checks and self-checks, to realize database construction. Based on the two-layered database architecture, high reliability and high availability of data can be ensured, and anti-tampering performance can be improved.

A method, system and computer program product for managing content distribution in a mobile communications environment. The communications environment includes a core network and a multitude of end-user devices. In one embodiment, the method comprises downloading content from the core network to the end-user devices; and maintaining a map between the end-user devices, the content downloaded to the end-user devices, and the locations of the end-user devices. When a first of the end-user devices requests a specified content, this map and one or more rules are used to identify a second of the end-user devices having the specified content. The first of the end-user devices fetches the specified content from this identified second of the end-user devices. In one embodiment, object location descriptors embedded in the content are rewritten when the content is downloaded to the end-user devices.

A system and method for uniquely identifying a storage device among an array of storage devices of a storage system is provided. In some embodiments, a storage device of the storage system is identified. The storage device may currently lack a name or may have an invalid name. A shelf identifier of a storage device shelf in which the storage device is installed is determined. A stack identifier associated with a connection of the storage device is also determined. The storage system constructs a device name for the storage device based on the shelf identifier and the stack identifier. In some such embodiments, a bay in which the storage device is installed is determined, and the device name is further based on an identifier of the bay. The device name may include the stack identifier, the shelf identifier, and/or the identifier of the bay.

Examples are disclosed for peer-to-peer data migration between nodes coupled via one or more peer-to-peer communication links.