# ALT (AltLayer) Supported pairs: ATL/ETH, ALT/USDT Contract address: 0x8457CA5040ad67fdebbCC8EdCE889A335Bc0fbFB AltLayer is an open and decentralized protocol for rollups. AltLayer brings together a novel idea of Restaked Rollups which takes rollups (spun from any rollup stack such as OP Stack, Arbitrum Orbit, Polygon CDK, ZK Stack, etc.) and provides them with enhanced security, decentralization, interoperability and crypto-economic fast finality by leveraging restaking mechanism. Website: Coingecko： --- # 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://tokenlon.gitbook.io/docs/docs.en/blog/whatsnew/tokenlisting/alt-altlayer.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.