以比特币（BOB）为基础：混合第 2 层网络彻底改变比特币参与 DeFi 的方式

Build on Bitcoin (BOB) 是一个混合第 2 层网络，可发挥以太坊和比特币区块链的优点。将比特币的安全性与以太坊的流动性和灵活的智能合约相结合，BOB 最终为比特币网络带来了除了对冲通胀之外的有意义的用途。

Build on Bitcoin (BOB) is a project that aims to bring DeFi and other advanced use cases to the Bitcoin network. It does this by creating a hybrid Layer-2 (L2) network that combines the security of Bitcoin with the liquidity and smart contract capabilities of Ethereum.

Build on Bitcoin (BOB) 是一个旨在将 DeFi 和其他高级用例引入比特币网络的项目。它通过创建一个混合第 2 层 (L2) 网络来实现这一点，该网络将比特币的安全性与以太坊的流动性和智能合约功能结合起来。

Here's a simplified overview of how BOB works:

以下是 BOB 工作原理的简单概述：

It begins with a Rollup Layer, where BOB is built on the Optimism OP Stack, which is a modular framework for creating L2 networks. This technology is also used to build the Optimism Mainnet and is compatible with some of the advancements planned for BOB.

它从 Rollup Layer 开始，其中 BOB 构建在 Optimism OP Stack 之上，Optimism OP Stack 是用于创建 L2 网络的模块化框架。该技术还用于构建 Optimism 主网，并与 BOB 计划的一些进步兼容。

At its core, BOB utilizes the Ethereum Virtual Machine (EVM) as the engine that powers the entire network. This allows BOB to be compatible with some of the most popular dApps and protocols on Ethereum, without the need to create new technologies.

BOB 的核心是利用以太坊虚拟机（EVM）作为驱动整个网络的引擎。这使得 BOB 能够与以太坊上一些最流行的 dApp 和协议兼容，而无需创建新技术。

Since most applications on Bitcoin are written in Rust programming language, BOB developers had to find software that could execute Rust code. RISC Zero zero-knowledge virtual machine (zkVM), is an experimental software that lets you prove the correct execution of arbitrary Rust code.

由于比特币上的大多数应用程序都是用 Rust 编程语言编写的，BOB 开发人员必须找到可以执行 Rust 代码的软件。 RISC 零零知识虚拟机 (zkVM) 是一款实验性软件，可让您证明任意 Rust 代码的正确执行。

The BOB team leveraged this tool to allow builders to zero-knowledge applications that leverage existing Bitcoin Rust packages.

BOB 团队利用这个工具，让构建者能够利用现有的比特币 Rust 包实现零知识应用程序。

With the help of the Rust zkVM, BOB builders can create new Bitcoin-Ethereum bridges or integrate existing ones.

在 Rust zkVM 的帮助下，BOB 构建者可以创建新的比特币-以太坊桥或集成现有桥。

Through a BTC light client, BOB has access to Bitcoin block and transactional data which smart contracts on Ethereum can process Bitcoin transactions such as Ordinal auctions, and BTC DEX swaps.

通过 BTC 轻客户端，BOB 可以访问比特币区块和交易数据，以太坊上的智能合约可以处理比特币交易，例如序数拍卖和 BTC DEX 互换。

BOB also has access to wrapped Bitcoin (wBTC) and threshold Bitcoin (tBTC), allowing smooth bridging of Bitcoin-based assets.

BOB 还可以访问打包比特币 (wBTC) 和阈值比特币 (tBTC)，从而实现基于比特币的资产的顺利桥接。

Finally, the stack that everyone sees – the BOB Software Development Kit (SDK) provides a powerful platform where builders can access tools to build on Bitcoin.

最后，大家都看到的堆栈——BOB 软件开发套件（SDK）提供了一个强大的平台，开发者可以在其中访问在比特币上进行构建的工具。

The launch of BOB's L2 protocol is only in its first phase. There are three more phases BOB will go through before completion.

BOB的L2协议的推出仅处于第一阶段。在完成之前，BOB 还要经历三个阶段。

In phase 1 of the launch, BOB developers were bootstrapping the network as an Optimistic Rollup on the EVM using the OP stack. This phase is already complete.

在发布的第一阶段，BOB 开发人员使用 OP 堆栈将网络引导为 EVM 上的 Optimistic Rollup。此阶段已经完成。

In phase 2, Bitcoin Proof of Work (PoW) will be introduced to the BOB Ethereum rollup version. This will be possible through the new merged mining, a way of mining multiple cryptocurrencies through something called Auxiliary Proof of Work (AuxPoW). This phase will introduce Bitcoin’s security into the mix.

在第二阶段，BOB以太坊汇总版本将引入比特币工作量证明（PoW）。这将通过新的合并挖掘来实现，这是一种通过称为辅助工作证明（AuxPoW）的方式挖掘多种加密货币的方法。这一阶段将引入比特币的安全性。

Phase 3 will bring Bitcoin as a settlement layer to BOB. Currently, Ethereum is the settlement layer as BOB is built on OP Stack which uses the EVM. The BOB team is looking to use the Bitcoin Virtual Machine (BitVM) for Bitcoin settlement & on-chain fraud proof.

第三阶段将把比特币作为 BOB 的结算层。目前，以太坊是结算层，因为 BOB 构建在使用 EVM 的 OP Stack 上。 BOB 团队正在寻求使用比特币虚拟机（BitVM）进行比特币结算和链上欺诈证明。

Finally, phase 4 of the launch will see the deployment of zk-Rollups directly on Bitcoin. However, this development is overly dependent on whether Bitcoin will be improved with the necessary opcodes. Should this come to pass, BOB itself can be proven in the zkVM and verified by Bitcoin consensus.

最后，发布的第 4 阶段将直接在比特币上部署 zk-Rollups。然而，这种发展过度依赖于比特币是否会通过必要的操作码得到改进。如果这成为现实，BOB 本身可以在 zkVM 中得到证明，并通过比特币共识进行验证。

Even though phase 4 is in the roadmap, BOB developers think it is “very unlikely that Bitcoin will support a ZK verifier in the near future.”

尽管第四阶段已在路线图中，但 BOB 开发人员认为“比特币在不久的将来不太可能支持 ZK 验证器”。

The BOB project offers a myriad of benefits for those who will use it. Some of the most significant ones include:

BOB 项目为使用它的人提供了无数的好处。一些最重要的包括：

Bitcoin Defi Summer is Coming

比特币 Defi 夏天即将到来

The launch of BOB comes at a time when there is an emergence of new Bitcoin layer-2 protocols such as Babylon Chain and SatoshiVM, among others. The launch of such networks on Bitcoin will not only usher in Bitcoin defi summer but will give Bitcoin the credibility it needs to remain the number one cryptocurrency in the blockchain space.

BOB 的推出正值新的比特币第 2 层协议出现之际，例如 Babylon Chain 和 SatoshiVM 等。在比特币上推出此类网络不仅将迎来比特币去中心化金融之夏，还将赋予比特币保持区块链领域第一加密货币所需的可信度。

The launch of Build on Bitcoin (BOB) is a significant development in the world of cryptocurrencies. It has the potential to open up new possibilities for Bitcoin and bring it closer to becoming a truly multi-chain asset. As the project continues to evolve and new updates are released, we can expect to gain a deeper understanding of its capabilities and the role it will play in the future of Bitcoin.

Build on Bitcoin (BOB) 的推出是加密货币领域的一项重大发展。它有潜力为比特币开辟新的可能性，使其更接近成为真正的多链资产。随着该项目的不断发展和新更新的发布，我们可以期望更深入地了解其功能以及它将在比特币的未来中发挥的作用。