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1. (US20190229911) BLOCKCHAIN-IMPLEMENTED METHOD AND SYSTEM

Office : United States of America
Application Number: 16320080 Application Date: 21.07.2017
Publication Number: 20190229911 Publication Date: 25.07.2019
Publication Kind : A1
Prior PCT appl.: Application Number:PCTIB2017054422 ; Publication Number: Click to see the data
IPC:
H04L 9/14
H04L 9/08
G06Q 20/38
G06Q 20/06
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
14
using a plurality of keys or algorithms
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9
Arrangements for secret or secure communication
06
the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems
08
Key distribution
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
Q
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20
Payment architectures, schemes or protocols
38
Payment protocols; Details thereof
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
Q
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
20
Payment architectures, schemes or protocols
04
Payment circuits
06
Private payment circuits, e.g. involving electronic currency used only among participants of a common payment scheme
CPC:
H04L 9/0861
H04L 9/14
G06Q 20/389
G06Q 2220/00
G06Q 20/0658
H04L 2209/38
H04L 2209/56
G06Q 20/3829
Applicants: nChain Holdings Limited
Inventors: Gavin Allen
Priority Data: 1613148.4 29.07.2016 GB
1613177.3 29.07.2016 GB
1613188.0 29.07.2016 GB
Title: (EN) BLOCKCHAIN-IMPLEMENTED METHOD AND SYSTEM
Abstract: front page image
(EN)

The invention provides a computer-implemented control method and corresponding system. The method may control or influence a device, system or other resource such as a technical process. The invention can provide a mechanism for emulating or otherwise executing the functionality of a logic gate via a computer-based distributed ledger (blockchain). This may be the Bitcoin blockchain or an alternative network/protocol. The invention provides logic embedded within a redeem script such that it determines which particular private keys have been used to sign an unlocking script, and then interprets the provision of those keys in accordance with a predetermined function. In a preferred embodiment, the method may comprise the steps of providing a blockchain Transaction comprising a redeem script for an output, wherein the redeem script: i) specifies a plurality of public keys, each associated with a corresponding private key; and wherein each public key is uniquely associated with a potential state of at least one data source; and ii) comprises logic arranged to provide a result based on which of the plurality of associated private key(s) is used to sign the unlocking script; wherein a minimum number of said private keys must be used to sign an unlocking script of a further blockchain Transaction in order to spend the output. Preferably, the logic is arranged to implement the functionality of a logic gate such as a NOT, AND, OR, NOR, XOR, IMPLY, NAND, NONIMPLY or XNOR gate.