Nchain Licensing Ag

Nchain Holdings Limited

Other

Silvia Bartolucci

Daniel Joseph

Pauline Bernat

Simone Madeo

Craig Steven Wright

John Fletcher

Techniques are presented for a method of propagating data packets in a network of nodes. The method includes: generating at least one data packet of a first type; collecting a set of first data packets of the first type during a first time period the set including at least one data packet received from one or more other nodes in the network; arbitrarily selecting a subset of entry nodes to the first node to which a subset of the collected and generated data packets will be forwarded to; and transmitting the data packets to the subset of arbitrarily selected entry nodes.

Systems and methods for propagating data packets in a network of nodes

A computer-implemented method of making a decision on a blockchain is provided. The method comprises providing a blockchain voting commitment transaction () redeemable by means of a first signature (σ(A), σ(B)) associated with a selection (A, B) and a second signature (σ(A), σ(B)) associated with the selection, providing each of a plurality of participants (U) with at least one share (k, k) of at least one respective secret value (k, k) wherein a threshold number of shares is required in order to execute said second signature, and submitting the blockchain voting commitment transaction () to the blockchain.

Systems and methods for communication, storage and processing of data provided by an entity over a blockchain network

A method of propagating data packets in a network of nodes is disclosed. The method, implemented at one of the nodes, includes: generating at least one data packet of a first type; collecting a set of data packets of the first type during a first time period, the set including the at least one generated data packet and one data packet of the first type received from one or more first nodes in the network; and for each data packet in the set: randomly select two or more neighbouring nodes connected to said one of the nodes; transmit, to each of the two or more selected neighbouring nodes: the data packet, wherein the two or more selected neighbouring nodes are configured to relay the data packet to one or more second nodes in the network using a mode of data propagation arbitrarily selected for that neighbouring node.

Computer-implemented system and method for propagation and communication of data in a network such as a blockchain network

A computer-implemented method for submitting feedback for an entity to a blockchain is disclosed. The method, which is implemented at one of a plurality of participating nodes, includes: obtaining a first key, the first key being one of a fixed set of keys distributed to participating nodes that are eligible to submit feedback for the entity; generating first feedback (r) of the entity for submission to the blockchain; encrypting the first feedback (r) using at least the first key; and submitting the encrypted first feedback to a mixing service, the mixing service being configured to generate a mixed transaction based on the encrypted first feedback and at least one other encrypted feedback submission from one or more eligible participating nodes.

A method for decision-making on a blockchain includes receiving first public keys from participants, where the first public keys are related to first private keys. The first public keys are combined to generate second public keys, where the second public keys are decisions based on selections among the participants. Third public keys, which correspond to the second public keys, are communicated to the participants. A voting blockchain transaction is generated, where an input script is executed by using a digital signature that corresponds to each participant's first private key, which corresponds to a participant's selection. Output of the voting transaction is a script that represents a decision based on the participants' selections. A payment blockchain transaction is generated, where execution of an output of the payment transaction requires a digital signature that corresponds to a third public key, which corresponds to the decision of the voting transaction.

Computer-implemented decision making system and method

Techniques are presented to enable recovery of one or more digital assets held on a blockchain after a private key is lost. The computer implemented method comprises setting access for the one or more digital assets held on the blockchain under the public key Pk and accessible using the corresponding private key Sk of the user such that the one or more digital assets are also accessible using a private key x shared by a congress on the blockchain network, each member of the congress having a private key share xto be used in a threshold signature scheme used to generate a valid signature. As a result of the private key Sk being lost, the congress accesses the one or more digital assets on behalf of the user in response to the user proving their identity to the congress by providing a recovery password.

Computer-implemented system and method providing a decentralised protocol for the recovery of cryptographic assets

A method of controlling and coordinating of processing steps in a distributed system is disclosed. The method may be implemented by a node in a cyclically ordered set of nodes in a blockchain network. The method includes receiving, from an immediately subsequent node, values corresponding to combinations of possible outcomes of processing steps associated with nodes from that node to a node preceding a supervisor node. The values are based on public keys associated with the nodes corresponding to possible outputs and the supervisor's public key. State values are generated based on the values and public keys corresponding to the possible outcomes further to a processing step of the node shared with the supervisor and a previous node. A blockchain transaction is prepared to transmit control of a resource from the node to the subsequent node upon supply of unlocking values corresponding to the received values.

Computer-implemented methods and systems for controlling tasks implemented by a cyclically-ordered set of nodes participating in a blockchain network

A computer-implemented method to participate in a token transfer process for transferring a first quantity of token from a sender node to a recipient node using a blockchain is disclosed. The method comprising: joining a token transfer process as a participating node in the indirect anonymous transfer protocol; obtaining a list of indirect token transactions for which the first node is either an input node or an output node for in the indirect anonymous transfer protocol; generating, in collaboration with other participating nodes of the indirect anonymous transfer protocol, a commitment channel between the first node and each of the other participating nodes for which an indirect token transaction identified in the list obtained by the first node, and collaborating with all the other participating nodes and executing the indirect token transactions in which the first node is involved, using the generated commitment channels.

System and method of multi-round token distribution using a blockchain network

A blockchain that can be used to generate an immutable transaction history of data produced by the set of digital twins. In the case of an error or failure, parties of interest can then access and analyze an immutable record of data. The invention may be used in conjunction with the Bitcoin blockchain or another blockchain protocol.

Computer-implemented systems and methods for linking a blockchain to a set of digital twins

A method of propagating data packets in a network of nodes is disclosed. The method, implemented at one of the nodes, includes: collecting a set of first data packets during a first time period, the set including at least one data packet received from one or more first nodes in the network; obtaining a plurality of encoded data packets, each one of the plurality of encoded data packets being generated by combining two or more first data packets of the set using network coding; determining a mapping of the plurality of encoded data packets and the first data packets of the set to one or more neighbouring nodes connected to the node; and transmitting the plurality of encoded data packets and the first data packets of the set to the one or more neighbouring nodes according to the determined mapping.

Systems and methods for random differential relay and network coding

An implementation of the present application provides a computer-implemented method to increase the security of a blockchain-implemented transaction, the transaction including participation from a plurality of participating nodes, each participating node participating as a message originator, selector, and propagator. The method, implemented at a participating node, includes: receiving ciphertext from a prior node and determining whether the participating node is a selector node for said ciphertext received from the prior node. When the participating node is the selector node for said ciphertext, the method includes selecting a subset of said ciphertext, decrypting the selected subset of said ciphertext to provide opted ciphertext and transmitting said opted ciphertext to the next node. When the participating node is other than the selector node for said ciphertext, the method includes decrypting said ciphertext received from the prior node and transmitting the decrypted ciphertext to the next node.

Methods and devices for increasing entropy of a blockchain using blinded outcome diversification

Disclosed herein are a process, an apparatus, and an article of manufacture for storing encrypted documents using a plurality of participating nodes that submit transactions to and/or retrieve transactions from a blockchain network. Functionality disclosed herein includes, but is not limited to, generating a collaborative public key with each of the participating nodes having a share of a corresponding collaborative private key, submitting, based on the collaborative public key and one or more shares of corresponding collaborative public keys, a respective encrypted document to a document repository, submitting a commitment transaction and a subsequent transaction associated with the encrypted document, and, at a future time, retrieving, based on a share of the collaborative public key, a set of subsequent transactions to generate a collective private key and decrypt the encrypted document. In some implementations, hashing operations are involved document encryption, document integrity verification, and document decryption.

Methods and systems for controlling access to, and integrity of, resources on a blockchain

A method for propagating data packets in a network of nodes is disclosed. The method includes collecting a set of first data packets during a first period from peer nodes in the network of time; determining an available bandwidth in the links of network nodes to a plurality of neighbouring nodes connected to the network node; assigning mappings for first data packets for relay to one or more neighbouring nodes. Based on a bandwidth, determine a range of possible values for peer nodes to which the first data packet is assigned for mappings; then selecting a number in the determined range to set as a first number of peer nodes to set a first length of time delay in relaying the first data packet to one or more peer nodes; and transmitting the first data packets of the set to the plurality of neighbouring nodes according to the mapping.

Systems and methods of propagating data packets in a network of nodes

A computer-implemented method for transmitting and/or submitting digital content such as feedback for an entity to a blockchain is disclosed. This may be, for example, the Bitcoin blockchain. The method, which is implemented at a first node, includes: submitting, to the blockchain, a first transaction for committing a first quantity of tokens to transfer to a second node associated with the entity, the first transaction having a first output; generating a first content for submission to the blockchain; and submitting, to the blockchain, a second transaction that returns a second quantity of the committed first quantity of tokens to an address associated with the first node, the second transaction having the first output of the first transaction as an input, wherein the first content is used to unlock the first output of the first transaction.

Growing community of inventors

London, United Kingdom

Silvia Bartolucci