> For the complete documentation index, see [llms.txt](https://docs.tellor.io/tellor-docs-v2/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tellor.io/tellor-docs-v2/disputing-data/how-to-dispute.md). # How to Dispute ### Tutorial * First you'll need to monitor the transactions that reporters submit on chain and identify a data report that you'd like to dispute. You can do that using our [feeds page](https://feed.tellor.io), or the [oracle contract](/tellor-docs-v2/the-basics/contracts-reference.md) directly. * In order to dispute you'll need to collect the queryId and time from the data in the transaction log. ![example log data](/files/KrktdmgHc7JylfE2cifH) * Next, locate the [correct governance contract](/tellor-docs-v2/the-basics/contracts-reference.md) depending on which chain the data resides on. * Connect wallet funded with TRB and call the `beginDispute` function and input the `queryId` and `timestamp.` ![](/files/l4cmMg65RoGSg2A6ygZF) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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.tellor.io/tellor-docs-v2/disputing-data/how-to-dispute.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.