Abstract: A method for managing data in a decentralized blockchain consensus network of nodes interrelated with each other according to a tree-like structure includes publishing, by a root node, a product contract description for a new product, the product contract description including at least product information and product state information. The method further includes generating, by the root node, at least one product item for the new product by publishing a product item contract including at least item identification information, the product contract for the item, item state information, and valid modifier information for information of at least one node to be able to modify the item state. The method also includes updating, by the root node upon generating a new item for a product, the product contract description by including item information into the product contract description.

Abstract: A method for adding transactions to a blockchain, characterized by the following features: subscribers of the computer network, who are connected by a predefined relation, are determined; multiplication triples are generated as a secret shared among the subscribers; at least one multiplication triple among the multiplication triples is mapped, along with the transactions, to a hash value; if the hash value falls below a predefined target value, a block, which contains the multiplication triple mapped to the hash value, as well as the transactions, is transferred to the blockchain; and a multiparty computation in the computer network is controlled with the remaining multiplication triples.

Abstract: A system and method for a secure remote payments process and for generation of one-time only remote payment cards is presented. Use of the one-time payment (OTP) cards can use multi-factor authentication where one factor is a biometric technique. A process can include generating an OTP card number based on a first encryption algorithm, an expiry date, and a security code based on a second encryption algorithm. A purchase amount, and the OTP card information are decrypted by an issuer to approve payment for a remote payment, after which the OTP card is no longer valid.

Abstract: Techniques described herein are directed to using blockchains to record, manage, and transfer ownership rights to land titles. A method in accordance with these techniques may include: creating a property blockchain that is permissioned, the property blockchain including a chronologically ordered, back-linked list of one or more blocks, the one or more blocks including a genesis block, the genesis block including property attributes including one more of the following: a physical address of the property, a year the property was built, and an owner of the property; and transmitting the property blockchain to permissioned nodes on a network, where the permissioned nodes validate transactions associated with the property that are recorded on the property blockchain.

Abstract: Apparatus and methods for protecting biometric authentication information associated with a paper document are provided. A mobile device application may pre-associate the document with a biometric input. The mobile device application may generate a first composite hash value based on a combination of a numerical representation of a first image of the paper document and a numerical representation of a first biometric input. Subsequently, an authentication server may generate a second composite hash value based on a combination of a numerical representation of a second image of the paper document and a numerical representation of a second biometric input. The authentication server may determine whether an edit distance separating the second composite hash value and the first composite hash value is less than a threshold distance. If the edit distance is less than a threshold distance, the paper document may be authenticated.