Blockchain-implemented method and system

Abstract

This disclosure relates to use of a blockchain in implementing, controlling and/or automating a task or process. An embodiment of the disclosure 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, which value is determined by a sensor and supplied to an unlocking script of a further transaction arranged to spend the output; and wherein one of the plurality of input parameters which is a target output parameter; ii) logic arranged is based on a calculation performed on the plurality of the input parameters provided by an unlocking script to provide an interim result. And each transaction output attempt has a different parameter comparing a target output parameter against the interim result.