The document discusses the OpenChain Reference Tooling Work Group, which aims to build an open source software compliance toolchain ecosystem using existing open source tools. The work group plans to provide reference workflows and integration concepts to allow for the adoption and interoperability of existing tools. It also plans to offer reference toolchains that can be used freely to automate and integrate open source compliance checking. The work group invites others to get involved in its efforts on GitHub and via a mailing list and Slack channel.