以比特幣（BOB）為基礎：混合第 2 層網路徹底改變比特幣參與 DeFi 的方式

Build on Bitcoin (BOB) 是一個混合第 2 層網絡，可發揮以太坊和比特幣區塊鏈的優點。將比特幣的安全性與以太坊的流動性和靈活的智能合約相結合，BOB 最終為比特幣網路帶來了除了對沖通膨之外的有意義的用途。

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) 是一個旨在將 DeFi 和其他高級用例引入比特幣網路的專案。它透過創建一個混合第 2 層 (L2) 網路來實現這一點，該網路將比特幣的安全性與以太坊的流動性和智慧合約功能結合起來。

Here's a simplified overview of how BOB works:

以下是 BOB 工作原理的簡單概述：

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.

它從 Rollup Layer 開始，其中 BOB 構建在 Optimism OP Stack 之上，Optimism OP Stack 是用於創建 L2 網路的模組化框架。該技術也用於構建 Optimism 主網，並與 BOB 計劃的一些進步相容。

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虛擬機器（EVM）作為驅動整個網路的引擎。這使得 BOB 能夠與以太坊上一些最受歡迎的 dApp 和協議相容，而無需創建新技術。

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.

由於比特幣上的大多數應用程式都是用 Rust 程式語言編寫的，BOB 開發人員必須找到可以執行 Rust 程式碼的軟體。 RISC 零零知識虛擬機器 (zkVM) 是一款實驗性軟體，可讓您證明任意 Rust 程式碼的正確執行。

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

BOB 團隊利用這個工具，讓建構者能夠利用現有的比特幣 Rust 套件實現零知識應用程式。

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

在 Rust zkVM 的幫助下，BOB 建構者可以創建新的比特幣-以太坊橋或整合現有橋。

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.

透過 BTC 輕客戶端，BOB 可以存取比特幣區塊和交易數據，以太坊上的智慧合約可以處理比特幣交易，例如序數拍賣和 BTC DEX 互換。

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

BOB 還可以存取打包比特幣 (wBTC) 和閾值比特幣 (tBTC)，從而實現基於比特幣的資產的順利橋接。

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.

最後，大家都看到的堆疊－BOB 軟體開發套件（SDK）提供了一個強大的平台，開發者可以在其中存取在比特幣上進行建構的工具。

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協議的推出僅處於第一階段。在完成之前，BOB 還要經歷三個階段。

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.

在發布的第一階段，BOB 開發人員使用 OP 堆疊將網路引導為 EVM 上的 Optimistic Rollup。此階段已經完成。

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.

在第二階段，BOB以太坊匯總版本將引入比特幣工作量證明（PoW）。這將透過新的合併挖礦來實現，這是一種透過稱為輔助工作證明（AuxPoW）的方式挖掘多種加密貨幣的方法。這一階段將引入比特幣的安全性。

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.

第三階段將以比特幣作為 BOB 的結算層。目前，以太坊是結算層，因為 BOB 建構在使用 EVM 的 OP Stack 上。 BOB 團隊正在尋求使用比特幣虛擬機器（BitVM）進行比特幣結算和鏈上詐欺證明。

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.

最後，發布的第 4 階段將直接在比特幣上部署 zk-Rollups。然而，這種發展過度依賴比特幣是否會透過必要的操作碼來改進。如果這成為現實，BOB 本身可以在 zkVM 中得到證明，並透過比特幣共識進行驗證。

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.”

儘管第四階段已在路線圖中，但 BOB 開發人員認為「比特幣在不久的將來不太可能支援 ZK 驗證器」。

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

BOB 計畫為使用它的人提供了無數的好處。一些最重要的包括：

Bitcoin Defi Summer is Coming

比特幣 Defi 夏天即將到來

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幣第 2 層協議出現之際，例如 Babylon Chain 和 SatoshiVM 等。在比特幣上推出此類網路不僅將迎來比特幣去中心化金融之夏，還將賦予比特幣保持區塊鏈領域第一加密貨幣所需的可信度。

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) 的推出是加密貨幣領域的重大發展。它有潛力為比特幣開闢新的可能性，使其更接近成為真正的多鏈資產。隨著該專案的不斷發展和新更新的發布，我們可以期望更深入地了解其功能以及它將在比特幣的未來中發揮的作用。