> For the complete documentation index, see [llms.txt](https://meversedex.gitbook.io/meverse-dev-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://meversedex.gitbook.io/meverse-dev-docs/meverse-network-structure/observer-node.md).

# Observer Node

Observer nodes play an important role in validating blocks created by generator nodes. Once a block is created, observer nodes confirm the block and add signatures to the block. At least three observer node signatures are required for a block to be recognized as valid. This process is essential to maintaining the integrity and trustworthiness of the blockchain.