# Technical Introduction

## Basic Concepts <a href="#basic-concepts" id="basic-concepts"></a>

For users and developers alike, the fundamental concept of Bitlayer is outlined below:

![analog](https://docs.bitlayer.org/images/analog-btc-eth.png)

Bitlayer acts as a Layer 2 solution for Bitcoin, boasting **100% EVM and Ethereum toolchain compatibility**, with BTC as native token(gas token).

Users can engage with it using wallets such as **Metamask, imToken, or other Ethereum-compatible wallets**.

Developers are afforded the ease of migrating smart contracts written in **Solidity, Vyper, or any other language that compiles to EVM bytecode** directly to Bitlayer, using the toolchain you are familiar with: Ethereum JSON-RPC, Hardhat, etc.

## Architecture <a href="#architecture" id="architecture"></a>

![arch](https://docs.bitlayer.org/images/architecture.png)

Bitlayer subscribes to the typical model of an Optimistic Rollup equivalent.

## Benefits <a href="#benefits" id="benefits"></a>

![benefits](https://docs.bitlayer.org/images/benefits.png)

## Bridges <a href="#bridges" id="bridges"></a>

Bitlayer will be connected by numerous bridges.

![bridges](https://docs.bitlayer.org/images/bitlayer-bridges.png)

### Bitlayer <--> Blockchains <a href="#bitlayer-blockchains" id="bitlayer-blockchains"></a>

If the **source chain** is Bitcoin, it is recommended to use UniSats, Xverse, or another Bitcoin wallet as the source wallet.

### Bitlayer <--> CEXs(centralized exchanges) <a href="#bitlayer-cexscentralized-exchanges" id="bitlayer-cexscentralized-exchanges"></a>

You can withdraw from CEXs to the bitlayer's ETH-Compatible wallet address.