ABCDE: Why should we invest in UTXO Stack

ABCDE-led UTXO Stack can technically help project developers issue BTC Layer2 based on UTXO architecture with one click, and natively integrates RGB++ protocol capabilities. In terms of security, Layer 2 security is guaranteed by pledging BTC, CKB and BTC L1 assets.

Simply put, UTXO Stack is the "OP Stack + EigenLayer" of the Bitcoin ecosystem

1. The battle for BTC Layer2 and RGB++

If you want to explain UTXO Stack clearly, it is impossible to avoid RGB++

Currently There are more than 20 BTC Layer 2 on the market, but most of them are EVM solutions. They basically use ETH’s technology stack + bridge to solve the expansion problem of BTC. Although the ecosystem can be quickly built in the short term, in the long term, this solution has no strong binding relationship with the BTC main chain in terms of security and relies heavily on bridges. Second, it is ideologically based on ETH. The Account model and EVM virtual machine to expand the BTC of UTXO are somewhat insufficient for "Bitcoin Native"

And the security is highly related to BTC L1, and it is a solution that is sufficient for BTC Native. The Lightning Network has been running for many years and has not achieved ideal results. effect, and has a natural expansion shortcoming that cannot support smart contracts. Client-side verification paradigm solutions such as Taproot and RGB also have many problems such as long implementation times and slow technological progress. This is also the main reason why the current EVM expansion plan is so popular

And Nervos, which has been deeply involved in the public chain field for many years, uses the natural structural advantages of POW+UTXO as BTC + innovative "isomorphic mapping" technology to verify the RGB client The paradigm was "seamlessly migrated" to CKB and named RGB++. It has sacrificed a little privacy in exchange for great functionality and flexibility expansion, and security is strongly bound to BTC L1. More importantly, RGB++ was launched just a few days ago! This means that this is no longer an expansion narrative that stays at the concept or development level, but a product that can actually start building ecosystems and solutions.

If the above terms are like client-side verification and isomorphic binding is still too abstract, then the following approximate analogy can be used to understand RGB++ - the user initiates a transaction on BTC L1 to trigger the RGB++ asset transaction belonging to the user on CKB , when this transaction is completed on CKB, write back the previous Commitment of BTC L1

你也許會疑惑 — 這也沒省掉Gas費不是？用戶在BTC L1上照樣還得發起交易，照樣得付BTC上的Gas費，現在還要加上CKB這邊的Gas費，感覺，更貴了？

其實不然，好處有以下四個

• RGB++作為資產發行協議，讓BTC L1擁有了發行RGB新資產的能力（想想Merlin的BRC420）
• 在CKB上面的RGB++資產交易是完全圖靈完備，具備可程式化的。
• 你可以等多筆RGB++轉賬完成後，再匯總發送一個Commitment到比特幣L1上，這被稱為“交易折疊”，是不是很有Rollup即視感，這不就省掉很多Gas費用了
• 不光是RGB++資產可以被映射到CKB，Atomical，Rune等具備UTXO特性的資產一樣可以映射到CKB上來做圖靈完備的交易

🎜🎜🎜🎜🎜🎜🎜🎜

因為Bitcoin L1上面的UTXO才能操作或更新RGB++UTXO，所以在RGB++裡，CKB成了BTC的“執行+DA”層，BTC L1成了真正意義上的“結算層”，這是目前任何EVM和非EVM BTC 擴容方案都無法做到的

如果你覺得這套方案還是速度不夠快，費用不夠低怎麼辦？畢竟BTC L1上的交易依舊不可避免，CKB作為一條POW L1的極限TPS​​也只有幾百。有沒有更靈活快速的擴容方案，就像…ETH生態那邊的Appchain？

於是乎我們有了UTXO Stack，基於BTC與RGB++的「OP Stack」

​​二. UTXO Stack — BTC的OPOP Stack+EigenLayer

如果你熟悉OP Stack，RAAS（Rollup堆疊的話，UTXO你理解起來應該非常容易

有了UTXO Stack，你可以一鍵發行BTC的同構UTXO Appchain，而這些Appchain有如下特性

• UTXO模型，超高TPS （UTXO天生自帶並行處理），超低Gas費用
• POS機制，安全性由BTC上質押的BTC/CKB來提供（類似EigenLayer）
• 資產協議採用RGB++，因為同構映射技術的存在，資產可以在Appchain/CKB/ BTC之間任意跳轉，無需跨鏈橋
• 可以復用CKB智能合約棧
• 可以復用BTC錢包（用戶對於CKB這條鏈無感知）

終於，我們有了比特幣原生的，基於UTXO的一件髮鏈基礎設施，這項基礎設施也融合了EigenLayer提出的Restaking概念，在給BTC和CKB更好賦能的同時，為Appchain的冷啟動和安全性保駕護航

可以預見的是，在不久的未來，BTC EVM layer2與BTC UTXO layer2會在技術，生態，甚至意識形態多個層面展開一輪正面對抗。

RGB++從2月正式提出到4月落地，只花了短短不到兩個月的時間，展現出團隊極為強大的工程能力。 UTXO Stack在RGB++落地的同時推出，更是給予了BTC生態資產發行與玩法上更加多元+Bitcoin Native的可能性。我們相信並攜手UTXO Stack，一起將比特幣生態推向一個更美好，更繁榮的未來。

關於ABCDE

ABCDE是專注於領投頂級Crypto Builder的VC，由耕耘了Crypto行業10年以上的Huobi Cofounder杜均及前互聯網和Crypto創業家BMAN聯合創辦。 ABCDE的聯合創始人們從0開始在Crypto行業建立了數十億美元市值的公司。因為我們是創業者，所以我們更懂得創業者。我們已經為ABCDE的 Builder建構了上市公司（1611.HK）、交易所（Huobi）、SAAS公司（ChainUP）、媒體（CoinTime.com）、開發者平台(BeWater.xyz)等端到端的生態。

Twitter：https://twitter.com/ABCDLabs

Website：www.ABCDE.com

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