BitVM2 白皮书推出新的比特币侧链技术和桥接设计

区块链开发人员发布了 BitVM2 白皮书，介绍了比特币侧链技术的新更新并引入了新的桥设计。

Developers of Bitcoin (BTC) scaling solution BitVM have announced the release of BitVM2, presenting updates to the Bitcoin sidechain technology and introducing a new bridge design.

比特币 (BTC) 扩容解决方案 BitVM 的开发商宣布发布 BitVM2，介绍了比特币侧链技术的更新并引入了新的桥设计。

In an Aug. 15 announcement on Medium, Alexei Zamyatin, a co-founder of Build on Bitcoin, a hybrid layer-2 powered by Bitcoin and Ethereum, said the updated version aims to enhance the security of BitVM by allowing anyone to challenge transactions within the system, minimizing the on-chain footprint to just three transactions for dispute resolution.

在 8 月 15 日的 Medium 上发布的公告中，Build on Bitcoin（由比特币和以太坊驱动的混合第 2 层）联合创始人 Alexei Zamyatin 表示，更新版本旨在通过允许任何人挑战内部交易来增强 BitVM 的安全性。该系统将链上足迹最小化为仅三笔交易以解决争议。

Announcing BitVM2 and BitVM Bridge!

宣布推出 BitVM2 和 BitVM Bridge！

Today we released the BitVM2 tech and bridge paper!

今天我们发布了 BitVM2 技术和桥梁论文！

Huge thanks to brilliant @robin_linus @lukas_aumayr Andrea Pelosi @zetavar1 @matteo_maffei

非常感谢出色的@robin_linus @lukas_aumayr Andrea Pelosi @zetavar1 @matteo_maffei

BitVM2 is a major improvement over previous BitVM versions.

BitVM2 是对之前 BitVM 版本的重大改进。

BitVM2’s whitepaper reads that the construction mechanism “requires no consensus changes” to the Bitcoin network, enabling the design of an “entirely new class of applications” on the blockchain.

BitVM2 的白皮书写道，比特币网络的构建机制“不需要共识改变”，从而能够在区块链上设计“全新的应用程序类别”。

“To guarantee liveness, we only require one active rational operator (while the others can be malicious). Any user can act as challenger, facilitating permissionless verification of the protocol.”

“为了保证活跃性，我们只需要一个活跃的理性操作者（而其他操作者可能是恶意的）。任何用户都可以充当挑战者，促进协议的无许可验证。”

BitVM2 whitepaper

BitVM2 白皮书

BitVM’s Bridge design — which is touted as “the most secure BTC bridge to date” — employs a 1-of-n security model, allowing anyone to challenge and prevent unauthorized transactions, contrasting with the traditional t-of-n multisig approach that relies on the assumption of an honest majority.

BitVM 的 Bridge 设计被誉为“迄今为止最安全的 BTC 桥”，采用 1-of-n 安全模型，允许任何人挑战和阻止未经授权的交易，这与传统的 t-of-n 多重签名方法形成鲜明对比。假设诚实的多数。

Authored by Robin Linus, Zamyatin, Lukas Aumayr, Andrea Pelosi, Zeta Avirikioti, and Matteo Maffei, the whitepaper notes that nearly all existing Bitcoin bridges rely on multi- or threshold signature schemes, where a group of t-of-n signers is entrusted with safeguarding Bitcoin.

该白皮书由 Robin Linus、Zamyatin、Lukas Aumayr、Andrea Pelosi、Zeta Avirikioti 和 Matteo Maffei 撰写，指出几乎所有现有的比特币桥都依赖于多重签名或阈值签名方案，其中委托一组 t-of-n 签名者保护比特币。

Although some bridges employ economic security through collateralization, the authors say these designs “face scalability challenges due to high capital requirements and have thus achieved limited adoption in practice.”

尽管一些桥梁通过抵押来实现经济安全，但作者表示，这些设计“由于高资本要求而面临可扩展性挑战，因此在实践中的采用有限。”

First unveiled in October 2023, BitVM aims to redefine Bitcoin by enabling smart contract-like functionalities without transforming it into Ethereum. The project has spurred initiatives like Bitlayer, aimed at advancing layer-2 solutions on the Bitcoin network.

BitVM 于 2023 年 10 月首次推出，旨在通过启用类似智能合约的功能来重新定义比特币，而无需将其转换为以太坊。该项目催生了像 Bitlayer 这样的举措，旨在推进比特币网络上的第 2 层解决方案。