# Fraud Proofs AltLayer rollups are currently fraud proof based. And unlike many of the existing rollup implementations that do not have fraud proofs implemented or have it implemented but can only be triggerred by a whitelisted set of nodes, AltLayer has already implemented fraud proofs and any network participant can identify an incorrect state transition execution and challenge the sequencer that committed the block data on the Layer 1. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.altlayer.io/altlayer-documentation/core-features-of-altlayers-in-house-rollup-stack/fraud-proofs.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.