# sBTC The protocol uses sBTC to bridge Bitcoin into DeFi without swapping or exposure to centralized custodians. sBTC maintains a 1:1 peg with BTC through a decentralized bridge and leverages the unique proof-of-transfer (PoX) consensus mechanism of Stacks for enhanced security. Learn more about: * [sBTC](https://docs.stacks.co/concepts/sbtc) * Stacks' [sBTC bridge](https://app.stacks.co/) --- # 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.granite.world/introduction/stacks-sbtc-usdcx-aeusdc/sbtc.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.