> For the complete documentation index, see [llms.txt](https://docs.opendelta.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.opendelta.com/legacy-products/og30/methodology.md).

# Methodology

The methodology for **OG30** is provided by [GMCI](https://www.gmci.co/) and is based on their industry benchmark [GMCI 30 Index](https://www.gmci.co/indices/gmci-30). 

GMCI is the industry-leading crypto index methodology provider. GMCI indices are compliant with the European Benchmark Regulation (BMR).