儘管面臨安全挑戰，Layer-2 仍有望為比特幣帶來 DeFi 解決方案

Layer-2 旨在在比特幣區塊鏈之上運行，在以太坊生態系統多年創新的推動下，Layer-2 正在迅速興起。

Several protocols are now onboarding hundreds of developers to the Bitcoin network with the aim of making the BTC blockchain ecosystem more useful over time. These protocols are designed to operate on top of the Bitcoin blockchain, promising to bring decentralized finance (DeFi) solutions to the original chain.

目前，一些協議正在吸引數百名開發人員加入比特幣網絡，目的是讓 BTC 區塊鏈生態系統隨著時間的推移變得更加有用。這些協議旨在在比特幣區塊鏈之上運行，承諾將去中心化金融（DeFi）解決方案引入原始鏈。

Despite locking millions in value on-chain in a few months, Bitcoin layer-2s are still in their infancy and face challenges such as security issues and user experience concerns.

儘管在幾個月內鎖定了數百萬美元的鏈上價值，但比特幣 Layer-2 仍處於起步階段，面臨安全問題和用戶體驗問題等挑戰。

At the Bitcoin 2024 conference in Nashville, Tennessee, the Cointelegraph team spoke with some of these protocols about their visions and the challenges they face.

在田納西州納許維爾舉行的比特幣 2024 會議上，Cointelegraph 團隊與其中一些協議討論了他們的願景和麵臨的挑戰。

Investment manager Franklin Templeton is one of the issuers of Bitcoin exchange-traded funds, but the company is also backing emerging layer-2 protocols, such as Bitlayer.

投資經理富蘭克林鄧普頓是比特幣交易所交易基金的發行人之一，但該公司也支持新興的第 2 層協議，例如 Bitlayer。

According to Bitlayer co-founder Charlie Hu, the asset manager is now eyeing alternatives to unlock yield for its clients through digital assets, specifically via the Bitcoin network. He told Cointelegraph:

Bitlayer 聯合創始人 Charlie Hu 表示，該資產管理公司現在正在尋找替代方案，透過數位資產（特別是透過比特幣網路）為客戶釋放收益。他告訴 Cointelegraph：

“We are working with Franklin Templeton, one of the largest asset managers in the world, and they are looking at ways to put their clients'資金 into the crypto markets. But they want to do it in a safe and sound way, and they are looking at alternatives to putting clients'資金 directly on centralized exchanges.”

「我們正在與世界上最大的資產管理公司之一富蘭克林鄧普頓合作，他們正在尋找將客戶的資金投入加密貨幣市場的方法。但他們希望以安全可靠的方式做到這一點，並且他們正在尋找將客戶的資金直接放在中心化交易所的替代方案。

In July, Bitlayer closed an $11 million Series A round led by Templeton and ABCDE. The startup offers a more scalable way to transact on the Bitcoin network, like an additional road for transactions on the blockchain. For developers, this opens up the possibility of building applications on the BTC network instead of using Ethereum.

7 月，Bitlayer 完成了由 Templeton 和 ABCDE 領投的 1,100 萬美元 A 輪融資。該新創公司提供了一種更具可擴展性的比特幣網路交易方式，就像區塊鏈交易的一條額外道路一樣。對於開發人員來說，這開啟了在 BTC 網路上而不是使用以太坊建立應用程式的可能性。

In the nearly three months since its mainnet went live, the protocol has amassed $409 million in value locked on its chain, according to DefiLlama. The demand, according to Hu, mainly comes from institutional clients seeking additional income from crypto markets.

據 DefiLlama 稱，自主線上線以來的近三個月內，該協議已在其鏈上鎖定了 4.09 億美元的價值。胡表示，這種需求主要來自於尋求從加密市場獲得額外收入的機構客戶。

“The demand is coming from institutions that want to put their clients'資金 in the crypto markets. But they want to do it in a safe and sound way. So they are looking at alternatives to putting clients'資金 directly on centralized exchanges. And this is where Bitlayer comes in,” he added.

「需求來自於希望將客戶資金投入加密貨幣市場的機構。但他們希望以安全可靠的方式做到這一點。因此，他們正在尋找將客戶的資金直接放在中心化交易所的替代方案。這就是 Bitlayer 發揮作用的地方，」他補充道。

While Ethereum layer-2s and bridges have become a target for hackers and bad actors over the past few years, Bitcoin layer-2s may also take some time to evolve on this front.

雖然以太坊第 2 層和橋接器在過去幾年中已成為駭客和不良行為者的目標，但比特幣第 2 層在這方面的發展可能也需要一些時間。

“The big question at the core of this whole security model is how do I get it [tokens] out?,” said Build On Bitcoin (BOB) co-founder Alexei Zamyatin in reference to concerns about wrapping tokens on another layer while maintaining the security of the Bitcoin blockchain.

Build On Bitcoin (BOB) 聯合創始人 Alexei Zamyatin 在談到對將代幣包裝在另一層上同時保持比特幣區塊鏈的安全性。

To address this issue, BOB's team contributes to the development of BitVM, a virtual machine designed to execute smart contracts directly on the Bitcoin blockchain. According to Zamyatin, the BitVM system could enable realistic rollups that inherit Bitcoin security:

為了解決這個問題，BOB 的團隊致力於開發 BitVM，這是一種旨在直接在比特幣區塊鏈上執行智慧合約的虛擬機器。根據 Zamyatin 的說法，BitVM 系統可以實現繼承比特幣安全性的現實摘要：

“The idea is to have a smart contract that can be deployed on Bitcoin and will accept a batch of transactions, like a mini-block, and then generate a proof of the validity of these transactions. And this proof will be included in a Bitcoin transaction, and then anyone can verify it.”

「我們的想法是擁有一個可以部署在比特幣上的智能合約，並接受一批交易，例如迷你區塊，然後產生這些交易有效性的證明。這個證明將包含在比特幣交易中，然後任何人都可以驗證它。

Working on Bitcoin research since 2015, Zamyatin co-founded BOB to create a hybrid solution that combines features of the Bitcoin and Ethereum blockchains. Since then, the protocol has raised over $11 million from several investors.

Zamyatin 自 2015 年起致力於比特幣研究，與他人共同創立了 BOB，以創建結合了比特幣和以太坊區塊鏈功能的混合解決方案。自那時起，該協議已從多個投資者籌集了超過 1,100 萬美元。

In Zamyatin's view, layer-2s will allow innovation to return to Bitcoin in an era when centralized institutions are becoming more prevalent:

Zamyatin 認為，在中心化機構變得更加普遍的時代，第 2 層將使創新回歸比特幣：

“I find it a bit weird and strange that we're all cheering for the centralized platforms,” he said. “It's good for the price [...] but I think we shouldn't forget that [...] we will have to innovate [Bitcoin] now to make sure we have an alternative.”

「我覺得我們都為中心化平台歡呼有點奇怪，」他說。 “這對價格來說是有利的[...]，但我認為我們不應該忘記[...]我們現在必須創新[比特幣]，以確保我們有替代方案。”

Protocols working on the Bitcoin network have a clear goal: to close the utility gap between the first cryptocurrency and other layer-1 blockchains, such as Ethereum. In other words, build an alternative for crypto-based games, non-fungible tokens (NFTs), and protocols that currently exist elsewhere on-chain.

在比特幣網路上工作的協議有一個明確的目標：縮小第一個加密貨幣和其他第一層區塊鏈（例如以太坊）之間的效用差距。換句話說，為基於加密的遊戲、不可替代代幣（NFT）和當前鏈上其他地方存在的協議構建替代方案。

“I think Bitcoin is the entry point for the non-crypto world, right? Everyone hears Bitcoin first of Ethereum. I think Bitcoin can be the entry point, so everyone will buy Bitcoin or USDT first, not Ethereum,” B² network co-founder, known as Calvin, told Cointelegraph.

「我認為比特幣是非加密世界的切入點，對吧？每個人首先聽到的是比特幣，其次是以太坊。我認為比特幣可以成為切入點，因此每個人都會先購買比特幣或 USDT，而不是以太坊。

The protocol offers a data availability layer on the Bitcoin blockchain, a critical component for the security of decentralized applications. This layer ensures that the data necessary to validate transactions is available to all nodes in a network. In a blockchain-based game, for instance, this data layer could ensure that player interactions and in-game asset movements are stored in a decentralized manner.

該協議在比特幣區塊鏈上提供了數據可用性層，這是去中心化應用程式安全的關鍵組成部分。此層確保驗證交易所需的資料可供網路中的所有節點使用。例如，在基於區塊鏈的遊戲中，該資料層可以確保玩家互動和遊戲內資產移動以分散的方式儲存。

Having a dedicated layer for NFT transactions could have avoided the network congestion seen in 2023

擁有一個用於 NFT 交易的專用層可以避免 2023 年出現的網路擁堵