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1. (WO2018020371) BLOCKCHAIN-IMPLEMENTED METHOD AND SYSTEM

Pub. No.:    WO/2018/020371    International Application No.:    PCT/IB2017/054424
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Sat Jul 22 01:59:59 CEST 2017
IPC: G06Q 20/06
G06Q 20/36
G06F 21/30
G06Q 10/06
H04W 4/00
Applicants: NCHAIN HOLDINGS LIMITED
Inventors: ALLEN, Gavin
Title: BLOCKCHAIN-IMPLEMENTED METHOD AND SYSTEM
Abstract:
This invention relates generally to distributed ledger technology (including blockchain related technologies), and in particular the use of a blockchain in implementing, controlling and/or automating a task or process. It may relate to the use of a blockchain or related technology for recording or representing the execution of a portion of logic. This portion of logic may be arranged to implement the functionality of a logic gate, or plurality of logic gates, such as AND, XOR, NOT, OR etc.. An embodiment of the invention may comprise the steps of: providing a blockchain Transaction comprising a redeem script for an output, wherein the redeem script comprises: i) a plurality of input parameters, wherein each input parameter is uniquely associated with a potential state of at least one data source supplied to an unlocking script of a further transaction arranged to spend the output; and wherein one of the input parameters which is a target output parameter; ii) logic arranged to provide a result based on: A) a calculation performed on the input parameters provided by an unlocking script so as to provide an interim result; and B) a comparison of a target output parameter via the unlocking script against the interim result; and also comprising the step of attempting to spend the transaction output more than once, each attempt supplying a different target output parameter.