For example, companies could automatically be fined a certain amount if their acquired allowances do not cover their emissions for the compliance cycle (EC, 2016). At this point, it is possible to establish revised political requirements, for example when decreasing the overall amount of emissions certificates in order to reach the set climate goals. Table 4 summarises a possible technical set-up based on the outlined trading cycle. Given blockchain technology’s nascent state of maturity, several factors may have to be adjusted while developing the technology together with the stakeholders.