The International Union for Conservation of Nature (IUCN) intends to embark on a new global project: the “IUCN Green List”, a blockchain-enabled certification process which will improve the performance and success of protected and conserved areas across the globe. The IUCN Green List Standard will be adopted by many different countries and IUCN will work locally in each to track progress, ensure and oversee compliance with these new, global criteria for nature conservation success. The IUCN Green List programme provides a more standardized way for independent assessment of the performance of protected and conserved areas and to fairly distribute costs for their evaluation. Assurance for the credibility of the programme will be supported by mapping the Green List process on the blockchain, creating an Ethereum based IUCN ‘Green List Standard’ Token (GLS) which can then be used to run smart contracts for Green List candidate nature areas.