> For the complete documentation index, see [llms.txt](https://whitepaper.litho.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.litho.ai/makalu/packages/docs/cross-chain-integration.md).

# Cross-Chain Integration

Asset mapping refers to the process of producing matching tokens for bookkeeping on Lithosphere for a controlled item. One token can freely interact with other mapped assets thanks to mapping. Lock-in and Lock-out operations are used to establish and de-manage distributed control.


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