> For the complete documentation index, see [llms.txt](https://www.build3.network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.build3.network/developers/notes-about-substrate/prebuilt-pallets/off-chain-worker.md).

# Off-chain Worker

Inspired by [this use case](https://docs.substrate.io/v3/concepts/off-chain-features/#:~:text=Off%2Dchain%20workers,-Off%2Dchain%20workers\&text=A%20fully%2Dfeatured%20HTTP%20client,between%20all%20off%2Dchain%20workers.) with additional reference materials.

An Off-chain worker can be used to process computationally complex transactions with larger bandwidth or data tansmission requirements.

An off-chain worker may be considered as a candidate that can download a large document from [IPFS](https://ipfs.io/) and perform a hash to verify the authenticity of the remote-hosted document.