> For the complete documentation index, see [llms.txt](https://docs.asterizm.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.asterizm.io/infrastructure/client-off-chain-module.md).

# Client off-chain module

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IMPORTANT!\
The client’s off-chain module ([Docker image](https://hub.docker.com/r/asterizm/client-server)) in the GO programming language is live in production!
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The Client off-chain module is a module for the client's server infrastructure (a [Docker image](https://hub.docker.com/r/asterizm/client-server)), functioning as a transmitter of the cross-chain transaction data (payload). 

This module is responsible for transmitting the payload and proofs of cross-chain transactions across different networks. It also verifies their validity using xID after transmission through the relayer servers, serving as the initial step of verification.

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Learn how to[ integrate the client off-chain module](/guides/getting-started/2.-implement-off-chain-module.md) on your server
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