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

# On Chain

<table data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-cover data-type="files"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td>How it works</td><td></td><td></td><td><a href="/files/6Vtj2klWG6Lyu2qujy4l">/files/6Vtj2klWG6Lyu2qujy4l</a></td><td><a href="/pages/Fl44UnxwVHr1H73ncPXn">/pages/Fl44UnxwVHr1H73ncPXn</a></td></tr><tr><td>Credit data</td><td></td><td></td><td><a href="/files/gBuM6RukcagU5udIwYC8">/files/gBuM6RukcagU5udIwYC8</a></td><td><a href="/pages/EZFDJCcT8aGjW159qbnz">/pages/EZFDJCcT8aGjW159qbnz</a></td></tr><tr><td>Contracts</td><td></td><td></td><td><a href="/files/wFO9YanoJMnUt7seETLD">/files/wFO9YanoJMnUt7seETLD</a></td><td><a href="/pages/uXO44IlnLIX5ixfyzb4T">/pages/uXO44IlnLIX5ixfyzb4T</a></td></tr><tr><td>Retiring Credits Onchain</td><td></td><td></td><td></td><td></td></tr></tbody></table>