# What's $zkBTC? ### What is $zkBTC? $zkBTC is an innovative ERC-20 token that represents Bitcoin on the Ethereum blockchain, **backed 1:1 with Bitcoin.** zkBTC aims to bring Bitcoin's reliability and market strength to Ethereum’s versatile DeFi ecosystem, making it easier for users to participate in Ethereum-based decentralized finance while still holding an asset tied to Bitcoin’s value. ### Key Features of $zkBTC 1. **Fully Decentralization**: zkBTC is powered by a decentralized cross-chain bridge built with zero-knowledge proof (ZKP) technology. This bridge ensures secure and trustless transactions between Bitcoin and Ethereum. 2. **1:1 Backed**:Each zkBTC token is minted through a cross-chain process and is guaranteed by a corresponding real Bitcoin, providing security and stability for all holders. 3. **Interoperability**: zkBTC provides users with a seamless way to utilize Bitcoin on Ethereum, enabling BTC holders to explore DeFi without selling their bitcoin assets. 4. **Security**: The security provided by cryptography and Zero-Knowledge Proofs (ZKPs) guarantees a 1:1 peg, effectively eliminating the risk of depegging and greatly enhancing overall security. --- # 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://lightec.gitbook.io/lightecxyz/zkbtc-bridge/whats-usdzkbtc.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.