More than a decade ago the US National Institutes of Health said "data sharing is essential for expedited translation of research results into knowledge, products, and procedures" and began requiring data sharing plans in all grants greater than USD500,000 \cite{datab}. Since 2018, the General Office of the State Council in China has required that "all scientific data derived from the science and technology plans ... shall be archived in the relevant science data centers" \cite{academy}. State Council governs the funding made available by the Chinese Academy of Sciences and also the Ministry of Science and Technology, under which sits National Natural Science Foundation of China. The EUR100billion Horizon Europe funding programme from the European Commission will challenge funded researchers to deliver "open access to publications, data, and to research data management plans" starting in 2021 \citep{union2018}. Private not-for-profit funders, like the Wellcome Trust and the Bill & Melinda Gates Foundation, are among those with the most progressive requirements. Funders argue that sharing data creates more value and impact from every grant they award and enhances trustworthiness and potential reproducibility. This is the open data challenge: Sharing data first, and then realising the value from doing so.