> For the complete documentation index, see [llms.txt](https://docs.fathom.fi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fathom.fi/fxd-stablecoin/bookkeeping-mechanism.md).

# BookKeeping mechanism

In Fathom's FXD stablecoin system, two important accounting mechanisms are central: stablecoin accounting and collateral accounting.