BitVM2 白皮書推出新的比特幣側鏈技術與橋接設計

區塊鏈開發人員發布了 BitVM2 白皮書，介紹了比特幣側鏈技術的新更新並引入了新的橋接設計。

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.

比特幣 (BTC) 擴充解決方案 BitVM 的開發人員宣布發布 BitVM2，介紹了比特幣側鏈技術的更新並引入了新的橋設計。

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 上發布的公告中，Build on Bitcoin（由比特幣和以太坊驅動的混合第2 層）聯合創始人Alexei Zamyatin 表示，更新版本旨在透過允許任何人挑戰內部交易來增強BitVM 的安全性。

Announcing BitVM2 and BitVM Bridge!

宣布推出 BitVM2 和 BitVM Bridge！

Today we released the BitVM2 tech and bridge paper!

今天我們發布了 BitVM2 技術和橋樑論文！

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

非常感謝出色的@robin_linus @lukas_aumayr Andrea Pelosi @zetavar1 @matteo_maffei

BitVM2 is a major improvement over previous BitVM versions.

BitVM2 是對先前 BitVM 版本的重大改進。

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 的白皮書寫道，比特幣網路的建構機制“不需要共識改變”，從而能夠在區塊鏈上設計“全新的應用程式類別”。

“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.”

「為了保證活躍性，我們只需要一個活躍的理性操作者（而其他操作者可能是惡意的）。任何用戶都可以充當挑戰者，促進協議的無許可驗證。

BitVM2 whitepaper

BitVM2 白皮書

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 設計被譽為“迄今為止最安全的BTC 橋”，採用1-of-n 安全模型，允許任何人挑戰和阻止未經授權的交易，這與傳統的t-of-n 多重簽名方法形成鮮明對比。

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.

白皮書由Robin Linus、Zamyatin、Lukas Aumayr、Andrea Pelosi、Zeta Avirikioti 和Matteo Maffei 撰寫，指出幾乎所有現有的比特幣橋都依賴多重簽名或閾值簽名方案，其中委託一組t-of-n 簽名者保護比特幣。

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.”

儘管一些橋樑通過抵押來實現經濟安全，但作者表示，這些設計“由於高資本要求而面臨可擴展性挑戰，因此在實踐中的採用有限。”

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 於 2023 年 10 月首次推出，旨在透過啟用類似智能合約的功能來重新定義比特幣，而無需將其轉換為以太坊。該計畫催生了像 Bitlayer 這樣的舉措，旨在推進比特幣網路上的第 2 層解決方案。