> For the complete documentation index, see [llms.txt](https://docs.binkbtc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.binkbtc.com/about/bink.md).

# Bink

### What Is Bink?

Bink is a **Bitcoin-first financial application** that combines the security of self-custody with the convenience of modern financial services. Built on Botanix, the first fully decentralized Bitcoin Layer 2, Bink enables you to:

#### Earn Yield on Your Bitcoin

Put your Bitcoin to work by earning **real yield generated from actual network activity**. Through stBTC (staked Bitcoin), you earn a share of Botanix network gas fees, denominated entirely in Bitcoin. This isn't speculative farming or unsustainable token rewards. It's transparent, sustainable income from real economic activity on the Bitcoin network.

#### Borrow Against Your Bitcoin

Access instant liquidity by borrowing USDC stablecoins against your Bitcoin without selling. Maintain your Bitcoin exposure and benefit from price appreciation. 

#### Exchange Seamlessly

Exchange between Bitcoin and USDC instantly through Bitzy, a decentralized exchange integrated directly into Bink. Fast execution (4-5 seconds), competitive rates, and transparent fees—all while your assets remain under your control.

#### Send & Receive

Make payments globally using Bitcoin or stablecoins. Send to anyone, anywhere, with minimal fees. Bink also offers support for both Bitcoin Layer 1 and Lightning Network transactions which ensures you can transact at any scale, from large settlements to instant micropayments.

#### Maintain Self-Custody

Your Bitcoin, your keys. Bink uses Privy's embedded wallet technology to give you complete ownership of your assets. Neither Bink nor any third party can access, freeze, or seize your funds. You maintain the sovereignty that Bitcoin was designed to enable.