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

# BTC.b

## General

BTC.b is wrapped EVM Bitcoin, supported by [Lombard](https://www.lombard.finance/). Find the definitive guide for BTC.b [here](https://docs.lombard.finance/use/use-btc.b).

Available for: Spot, Perps, Loans.

## How to get BTC.b with BTC?

You can [wrap your BTC here](https://www.lombard.finance/app/deposit). See these [instructions](https://docs.lombard.finance/learn/products-overview/assets#btc.b-bitcoin-bridged), pasted below.

<figure><img src="/files/aao5ETZ9l4ypYBC32Zjb" alt=""><figcaption></figcaption></figure>

If you have trouble with Lombard's UI, you can also use [MegaETH's UI for BTC bridging](https://rabbithole.megaeth.com/bridge-btc) (via Lombard) until World builds dedicated UI support.

## Bridging BTC.b

In addition to wrapping native BTC as described above, users can bridge BTC.b with Lombard from Ethereum Mainnet to MegaETH.

## Security & Monitoring

BTC.b is secured with Lombard's [security model, described here](https://docs.lombard.finance/learn/lombard-security-model). The broader [security architecture can be found here](https://docs.lombard.finance/learn/protocol-architecture). You can monitor the reserves backing BTC.b [here on Dune](https://dune.com/lombard_protocol/reserves).

## BTC Perps

BTC perps on World use an oracle price for BTC itself; the oracle price does not include the BTC.b wrapper.


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