> For the complete documentation index, see [llms.txt](https://docs.granite.world/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.granite.world/introduction/stacks-sbtc-usdcx-aeusdc/sbtc.md).

# 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/)