[DIS] CKB Integration for Rosen Bridge

CKB Community Fund DAO
1

[DIS] CKB Integration for Rosen Bridge

This proposal has been posted for voting.

Summary

This proposal is submitted to the Community Fund DAO to request grant funding to integrate CKB as a supported platform on Rosen Bridge using their Bridge Expansion Kit.

ETA to Completion: Q3-Q4 2026

Grant Amount: $65,000 USD (CKB price: $0.002376; CKB requested: 27,356,903)

CKB Address (development team wallet): ckb1qzda0cr08m85hc8jlnfp3zer7xulejywt49kt2rr0vthywaa50xwsqtrrk2drsladgjuzg84d8czr8tpuzj27hsassmsv

Introduction

Rosen Bridge is a bidirectional cross-chain decentralized asset bridge with a modern design and a new security model. Unlike traditional bridges, Rosen Bridge employs a multi-layered security approach that minimizes smart contract exposure and enhances safety through the use of off-chain verification. The protocol relies on a Proof of Event scheme, using two layers of redundant incentivized security roles known as Watchers and Guards. This design mitigates the security risks that have plagued previous bridges and provides a seamless experience for transferring assets across multiple blockchain networks.

Current Status

Rosen Bridge is currently live on mainnet and operating in a fully decentralized state. A third-party audit was completed in May 2024. Rosen Bridge currently connects Cardano, Ergo, Ethereum, Binance, Dogecoin, and Bitcoin.

The Rosen Bridge team released a Bridge Expansion Kit in Q2 2025, which allows third-party development teams to contribute the required code to support additional ecosystems. Ecosystem development teams can now contribute directly, reducing the need to rely solely on the Rosen Bridge team. This allows more integrations to be built in parallel and potentially lowers the costs required.

Development Team

The development effort will be led by Sōnami, a newly formed Web3 company that specializes in CKB development. The team members working on this project are:

  • Phroi (Lead Developer): Phroi is a developer who got his start in the Nervos ecosystem in 2023 when his team won the Broaden the Spectrum hackathon. He later continued on to develop the dCKB Rescue Tool and the iCKB liquid staking token, while remaining an active community contributor to core infrastructure and governance discussions.

    Phroi will lead the development effort, tasked with making all critical development decisions, contributing all necessary code, and ensuring that the integration code base is up-to-date at all times.

  • Alive (Support Developer): Alive is a full-stack blockchain developer who previously worked with the CKB Eco Fund and has worked on many Nervos ecosystem projects, including Stable++, SSRI, CCC, the Awesome CKB AI Resource Hub, and CKBoost.

    Alive will support Phroi’s development efforts by providing a critical review of all of Phroi’s development decisions and doing an in-depth line-by-line review of all of Phroi’s code. Alive will also serve as a backup maintainer, meaning that he will commit to staying up-to-date on the current state of Rosen Bridge and of the Nervos-specific implementation, and will be available to perform any time-sensitive maintenance on the bridge should Phroi not be available for any reason.

  • Jordan Mack (Support Developer): Jordan joined the Nervos Foundation in 2020 as a Senior Software Engineer and founded Sōnami in 2025. Jordan brings nearly 15 years of blockchain experience and over two decades of development experience.

    Jordan will serve as a support developer alongside Alive to ensure redundant coverage and will also provide project oversight to ensure the success of bridge development now and in the future.

Key Benefits for Nervos

Rosen Bridge offers many benefits to the Nervos ecosystem:

  • First Decentralized Bridge on Nervos: Rosen Bridge will be the first bridge connected to Nervos CKB that has achieved full decentralization. This aligns with the core values of Nervos Network to better provide resilient, permissionless, and censorship-resistant options for users.

  • Bidirectional Asset Transfer: Rosen Bridge is a bidirectional bridge that enables assets from remote chains to flow to Nervos, but it also allows Nervos assets to flow to the connected destination chains; something which is not currently possible. This means assets like CKB, iCKB, and SEAL will be tradable on destination chains in markets such as Uniswap, creating additional demand.

  • Lower Cost Market Access: The ability for Nervos assets to be used on connected destination chains also means that Nervos assets will be able to take advantage of existing token integrations for CEX/DEX platforms at much lower cost. Integration of Nervos’ native token standards (XUDT) would cost upwards of $200k on some CEX platforms. Nervos project tokens can be integrated on these platforms via Rosen Bridge, using wrapped tokens under the ERC20 (Ethereum) or CNT (Cardano) standards, which have already been integrated.

  • Synergy with DeFi Initiatives: Rosen Bridge will open new liquidity pathways that complement existing DeFi initiatives and projects. Existing DEX markets will gain exposure to more assets and potentially more volume as Nervos’ low transaction fees help foster more compelling use cases.

  • Market-Making Initiatives: Rosen Bridge’s integration will allow Nervos to take part in cross-chain market-making initiatives. Hummingbot is an open-source market-making bot that is being created to increase market efficiency and liquidity within connected UTXO chains.

  • UTXO Alliance Collaboration: Rosen Bridge will bring Nervos closer to a broader ecosystem of developers through the UTXO Alliance. Rosen Bridge is seen as a functional and symbolic prerequisite for much of the collaborative efforts we hope to align on in the future.

Incentivized Participation with Watchers and Guards

Rosen Bridge’s security model employs two layers of incentivized security roles: Watchers and Guards, ensuring redundant protection. Watchers operate under a permissionless staking mechanism, while Guards form a federated set. They work independently with overlapping responsibilities to provide an additional layer of protection, safeguarding the integrity of cross-chain transfers while earning income through bridge fees.

Members of the Nervos Community can participate as Watchers, earning rewards for securing the bridge. By staking $RSN tokens and running the Watcher software, community members can actively contribute to validating bridge transactions on Nervos while passively generating income. This strengthens not only the security of Rosen Bridge but also fosters the resilience and growth of all connected ecosystems.

Sōnami will play a key role in Rosen Bridge’s CKB integration by assuming the position of a Guard within the federated Guard set. Initially, a single Guard slot will be available, requiring high operational standards and close collaboration with the Rosen Bridge team for the rollout and operation. In the future, additional Guard slots may be introduced, at which point additional governance processes will be implemented to determine which other teams in the Nervos ecosystem are qualified to take on this critical role in transaction validation.

Bridges vs. Isomorphic Bindings

RGB++ is built using Isomorphic Bindings, which is a truly innovative solution. This has a similar purpose to what a bridge is used for, but with an entirely different design that is theoretically more secure. The natural question to ask is: Do we need a bridge at all?

Both RGB++ and Rosen Bridge have overlap in their purpose, and both are using new security models to address the points of failure that occurred on old bridge designs in the past. However, the two have different capabilities, and the way that they accomplish the task is ultimately different.

RGB++ is an emerging technology that will take time to gain adoption and currently has certain limitations that must be worked around. For example, RGB++ has limitations for leaping the native asset of the chain, and is only designed to work with UTXO-based chains. Rosen Bridge will work with both UTXO-based chains and account model-based chains and utilizes existing token standards on each chain, which allow for more seamless integration with existing infrastructure.

Isomorphic Bindings are innovative, but bridges still have their place. Adoption of Rosen Bridge will allow us to begin participating in initiatives with a growing number of connected ecosystems, including both UTXO and account model-based chains.

Rosen Bridge and RGB++ can co-exist together as well as with Fiber Network and Perun. These technologies are all far more complementary than they are competitive in nature, and each has unique advantages that developers can choose to utilize when building on CKB.

Budget & Milestones

Sōnami is requesting a $65k grant to support the integration of Nervos CKB into the bridge and cover the ongoing maintenance as new features are rolled out across supported platforms.

No down payment is required. We will rely on the following milestones.

Milestone 1: Technical Assessment and Development Plan

A preliminary technical review was completed to ensure that Rosen Bridge integration is feasible on CKB, but there are still technical decisions that have not been finalized. This milestone involves a deeper investigation of the technical details and formal documentation of our implementation plan.

Milestone Cost: $15,000 USD
Milestone ETA: Q1 2026
Deliverable: Documented implementation plan.

Milestone 2: Testbed Release

This milestone involves the deployment of the Nervos CKB integration to the Rosen Bridge testbed. This is done using Rosen Bridge’s isolated testing environment and zero-value test tokens on the CKB mainnet. This will allow us to conduct extensive testing of all bridge functionality for the Nervos integration and work with Nervos’ native assets in an isolated, identical environment to ensure full compatibility across all connected chains.

Milestone Cost: $25,000 USD
Milestone ETA: Q2 2026
Deliverable: Integration deployed on Rosen Bridge testbed.

Milestone 3: Mainnet Release

The final milestone is deploying the Rosen Bridge integration on the Nervos CKB mainnet. Once we have completed internal testing and code review, we will have a formal audit conducted by an external team. Once the integration has passed audit, we will conduct our final tests and then release it to the public.

Milestone Cost: $25,000 USD
Milestone ETA: Q3-Q4 2026
Deliverable: Integration deployed on Rosen Bridge mainnet.

Out-of-Scope Expenses

The following expenses are considered out of scope of this proposal and may require additional grant funding in the future.

Code Audits

Every single line of code will be extensively reviewed multiple times by all project team members. However, this is not a replacement for a formal audit. Due to the nature of audit review, we cannot anticipate the exact budget or timeline required. We must first complete the testnet implementation before we can request a budget estimate from an audit company. This will be handled in a separate grant request.

Ongoing Maintenance

We intend to provide bridge maintenance updates for a minimum of 12 months after the release to mainnet. We hope that bridge fees will provide enough revenue to continue maintenance indefinitely. However, there is a relatively high probability that it will take significantly longer than that for our ecosystems to ramp up bridge utilization to a point where fee revenue is high enough to be truly sustainable. If we need additional funding to continue bridge maintenance, we will submit future grant proposals at that time.

Closing

This integration is a highly valuable opportunity for Nervos to join a growing community of connected chains, where all participants benefit from greater collaboration and connectivity. It opens new pathways for liquidity, technical advancement, and meaningful cross-chain cooperation that strengthen Nervos’ position within the broader blockchain landscape.

This effort reflects the vision of open collaboration promoted by the UTXO Alliance, a vision shared by many within the Nervos community and across other UTXO-based ecosystems. It represents an important step toward building a more connected, capable, and enduring multi-chain future.

We appreciate the continued support and engagement of the Nervos community as we pursue this important initiative. Our team remains dedicated to strengthening the ecosystem through ongoing contributions and looks forward to supporting continued growth and collaboration in the years ahead.

45 Likes
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2

[DIS] Rosen Bridge 的 CKB 集成提案

摘要

本提案提交至 Community Fund DAO，申请拨款以通过 Rosen Bridge 的 Bridge Expansion Kit，将 CKB 集成为 Rosen Bridge 支持的平台之一。

预计完成时间：2026 年 Q3–Q4

申请拨款金额：65,000 美元
CKB 价格：0.002376 美元
申请 CKB 数量：27,356,903

CKB 地址（开发团队钱包）：
ckb1qzda0cr08m85hc8jlnfp3zer7xulejywt49kt2rr0vthywaa50xwsqtrrk2drsladgjuzg84d8czr8tpuzj27hsassmsv

引言

Rosen Bridge 是一个双向跨链去中心化资产桥，采用现代化设计和全新的安全模型。与传统跨链桥不同，Rosen Bridge 通过多层安全架构，尽量减少智能合约暴露，并利用链下验证机制提升整体安全性。该协议基于 Proof of Event 机制运行，引入了两层冗余且带激励的安全角色，称为 Watchers 与 Guards。这一设计有效缓解了早期跨链桥常见的安全风险，并为多条区块链网络之间的资产转移提供了顺畅体验。

当前状态

Rosen Bridge 目前已在主网上线，并以完全去中心化的形式运行。第三方安全审计已于 2024 年 5 月完成。目前已连接的网络包括 Cardano、Ergo、Ethereum、Binance、Dogecoin 以及 Bitcoin。

Rosen Bridge 团队于 2025 年 Q2 发布了 Bridge Expansion Kit，使第三方开发团队能够贡献所需代码，以支持新的生态系统。各生态的开发团队现在可以直接参与集成开发，不再完全依赖 Rosen Bridge 核心团队。这一机制允许多个集成并行推进，并有望显著降低整体成本。

开发团队

本次开发将由新成立的 Web3 公司 Sōnami 牵头，该公司专注于 CKB 相关开发。本项目的核心成员包括：

Phroi（首席开发者）

Phroi 于 2023 年因其团队在 Broaden the Spectrum 黑客松中获胜而进入 Nervos 生态。此后，他继续开发了 dCKB Rescue Tool 与 iCKB 流动性质押代币，并长期积极参与核心基础设施与治理讨论。
Phroi 将全面负责本项目的开发工作，包括所有关键技术决策、代码实现，以及确保集成代码库始终保持最新状态。

Alive（支持开发者）

Alive 是一名全栈区块链开发者，曾与 CKB Eco Fund 合作，并参与了多个 Nervos 生态项目，包括 Stable++、SSRI、CCC、Awesome CKB AI Resource Hub 以及 CKBoost。
Alive 将对 Phroi 的技术决策进行关键性审查，并对代码进行逐行深入评审。同时，Alive 还将作为备份维护者，持续跟进 Rosen Bridge 及 Nervos 专属实现的最新状态，并在 Phroi 无法参与时承担紧急维护工作。

Jordan Mack（支持开发者）

Jordan 于 2020 年加入 Nervos Foundation，担任高级软件工程师，并于 2025 年创立 Sōnami。他拥有近 15 年区块链经验及 20 余年的软件开发经验。
Jordan 将与 Alive 一同提供冗余支持，并承担项目整体监督职责，以确保桥接开发在当前及未来阶段顺利推进。

对 Nervos 的关键价值

Nervos 上首个完全去中心化的跨链桥

Rosen Bridge 将成为首个实现完全去中心化并接入 Nervos CKB 的跨链桥。这与 Nervos Network 所倡导的韧性、无需许可及抗审查的核心价值高度一致。

双向资产转移能力

Rosen Bridge 支持双向跨链，不仅允许外部链资产流入 Nervos，也支持 Nervos 资产流向其他目标链，这是当前尚未实现的能力。CKB、iCKB、SEAL 等资产将可在 Uniswap 等市场中交易，从而带来新增需求。

更低成本的市场接入

通过 Rosen Bridge，Nervos 资产可利用目标链上已集成的代币标准，从而以更低成本接入 CEX 与 DEX。直接在部分中心化交易所集成 Nervos 原生代币标准（XUDT）的成本可能高达 20 万美元以上，而通过 Rosen Bridge 使用 ERC20 或 Cardano 的 CNT 封装代币即可实现。

与 DeFi 计划的协同效应

Rosen Bridge 将打开新的流动性通道，与现有 DeFi 项目形成互补。现有 DEX 市场将获得更多资产与潜在交易量，而 Nervos 的低手续费将进一步催生更具吸引力的应用场景。

做市与流动性计划

该集成将使 Nervos 能够参与跨链做市计划。Hummingbot 是一款开源做市机器人，旨在提升已连接 UTXO 链之间的市场效率与流动性。

UTXO Alliance 协作

Rosen Bridge 将使 Nervos 更紧密地融入 UTXO Alliance 所代表的更广泛开发者生态。该桥被视为未来多项协作计划的功能性与象征性前提。

Watchers 与 Guards 的激励式参与机制

Rosen Bridge 的安全模型包含两层激励角色：Watchers 与 Guards，以实现冗余保护。Watchers 采用无需许可的质押机制，Guards 则构成一个联合体集合。二者独立运行且职责重叠，在获取桥接手续费收益的同时，确保跨链转移的完整性与安全性。

Nervos 社区成员可以作为 Watcher 参与其中。通过质押 RSN 代币并运行 Watcher 软件，参与者可在验证 Nervos 上的桥接交易的同时获得被动收益。这不仅增强了 Rosen Bridge 的安全性，也促进了所有已连接生态的稳健发展。

Sōnami 将在 CKB 集成中承担 Guard 角色，成为联合 Guard 集的一员。初期仅开放一个 Guard 名额，对运维标准要求极高，并需与 Rosen Bridge 团队密切协作。未来若增加 Guard 名额，将通过额外的治理流程决定哪些 Nervos 生态团队具备承担该关键验证职责的资格。

跨链桥与 Isomorphic Bindings 的对比

RGB++ 基于 Isomorphic Bindings 构建，是一种高度创新的解决方案。其目标与跨链桥相似，但采用了完全不同、理论上更安全的设计。这自然引出了一个问题：是否仍然需要跨链桥？

RGB++ 与 Rosen Bridge 在目标上存在一定重叠，二者均通过新的安全模型来解决早期桥接方案的风险问题。然而，它们在能力与实现方式上存在本质差异。

RGB++ 仍处于早期阶段，尚需时间推动生态采用，并且目前存在一些限制。例如，它在跨越链的原生资产方面存在局限，且仅适用于 UTXO 架构的区块链。Rosen Bridge 同时支持 UTXO 链与账户模型链，并直接利用各链现有的代币标准，从而能更顺畅地与既有基础设施集成。

Isomorphic Bindings 具有创新性，但跨链桥依然有其不可替代的价值。采用 Rosen Bridge 将使 Nervos 能够更早参与到不断扩展的多链生态协作中，涵盖 UTXO 与账户模型链。

Rosen Bridge 与 RGB++，以及 Fiber Network、Perun 等方案可以并存。这些技术之间更多是互补关系而非竞争关系，开发者可根据具体需求在 CKB 上选择最合适的工具。

预算与里程碑

Sōnami 申请 65,000 美元拨款，用于支持 Nervos CKB 的桥接集成开发，并覆盖后续功能扩展所需的维护成本。

本提案不要求预付款，资金将依据以下里程碑发放。

里程碑一：技术评估与开发计划

里程碑费用：15,000 美元
预计时间：2026 年 Q1
交付物：完整的实现方案文档

里程碑二：测试环境发布

里程碑费用：25,000 美元
预计时间：2026 年 Q2
交付物：测试环境中的完整集成

里程碑三：主网发布

里程碑费用：25,000 美元
预计时间：2026 年 Q3–Q4
交付物：Rosen Bridge 主网 CKB 集成

不包含在本提案内的费用

代码审计

尽管项目成员将多轮审查每一行代码，但这不能替代正式安全审计。需在测试网阶段完成后，另行提交拨款申请。

持续维护

主网发布后计划至少维护 12 个月。如手续费收入不足，将在未来提交新的拨款提案。

结语

本次集成为 Nervos 加入不断壮大的多链互联生态提供了重要契机，将推动流动性、技术发展与跨链协作，进一步巩固 Nervos 在区块链生态中的地位。

感谢 Nervos 社区的持续支持与参与。

6 Likes
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可以和即将关闭的Force Bridge对比一下，也是曾经nervos上首个跨链桥，也支持双向资产转移。

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I suggest the team can give a clear work-flow diagram of Rosen Bridge, for supporters can obviously figure out its advantages for the integration.

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I’ll most likely support this proposal, but if the audit is a mandatory part of the project, then I think the cost (estimated cost) of the audit needs to be included here.

Some audits can cost hundreds of thousands of dollars, but obviously this depends on the complexity of the project, so we really need to know in what sort of range you expect this to cost.

Because if the cost is so high that the separate audit proposal doesn’t pass and the project can’t go forward, then the $35K we’ve just spent on the first 2 parts is wasted.

I think if we are at least aware of the cost, then everyone can base their initial vote with this in mind.

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Rosen bridge本身有人用吗？，有大量用户用吗？，没有的话，做个跨链桥，要6万5？？，哪怕就是有，ckb本身也没啥玩的，开通了又有什么用？？

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我对这个项目持否定态度，我们还要修更多没有车在上面跑的路吗？我觉得nervos和中国的经济状况很像，基础设施和各种名目的产业园供给过剩，而缺少实际需求。即使站在“无论如何基建还是存在一定必要性”的角度，这跟nervos目前要发展的web5路线有多少匹配度吗？需要分散资金和精力去做defi上的努力吗（现在各种区块链项目都在卷defi，ckb有啥优势卷过它们呀）？还是罗森桥这么一个冷门链发展出来的冷门项目。就像楼上网友说的，这跟之前花费精力和金钱做的evm跨链桥 force bridge 有多大区别，有何必要在这个时间点再重复造一遍轮子？去年好不容易摸索出了同构绑定的独特优势，现在又要回去学人做桥吗？

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Maybe the translation isn’t clear, but I don’t think the amount of users relates to the cost of development.

But I know what you are saying, currently this might seem like it’s not needed, but the important thing is that it opens up lots of doors for new projects on CKB to go into the Ergo and Cardano communities in particular and try to get those users on other chains to come over and take part.

I know for me personally, I would start taking a lot more interest in projects on Ergo and Cardano if I knew I could easily take my CKB over there to take part.

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It’s a lot different than Forcebridge, because:

(1) Ergo in particular and Cardano to a lesser degree are a lot more closely aligned to CKB than CKB is/was to ETH and BSC.

and more importantly…

(2) Forcebridge didn’t make it possible for CKB to be bridged to ETH and BSC to be used on those chains.

2 Likes
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Thank you for your response, but please take a look at utxoswap. What necessity is there to bridge assets that don’t even have transactions on their own mainchain to other chains?Shouldn’t ckb’s goal be to generate as many transactions as possible on its own main chain, thereby increasing its occupancy?

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@phroi Thank you for your ongoing contributions. I’d like to ask if the project related to dckb will continue?thanks.

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Yeah, I definitely agree, CKB usage and users should be our top priority.

But I also think there are some infrastuctures like this that still make sense for CKB, even if it’s just in preparation for some good apps being built here and having the structures in place to bring in new users quickly and easily.

2 Likes
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Looking back at ckb’s trajectory over the past six years, it has consistently been driven by this vision—beautiful yet unrealistic. Its expenditures were rigid, while returns remained purely theoretical or imagined. It’s not that returns were impossible, but rather that this theoretical demand lacked any substantiated validation. We’ve seen this pattern play out all too often in the Chinese government’s blind investments. We should certainly embrace trial and error, but I believe this should be focused on product-side experimentation that can withstand market scrutiny. Perhaps it’s time to reverse-engineer supply from demand.

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I think we are pretty much on the same page.

I definitely want to see most of the effort now on products that people actually want to use because they are either really fun or there’s money to be made, preferably both!

I’m mostly not in favour of the DAO funding infrastructure projects, but in this case I can see the value because it opens up the possibility of onboarding new users to CKB from other chains that have a direct alignment with CKB.

The alignment being UTXO and in Ergo’s case, there is a cultural and project size similarity which I think can benefit both chains.

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Not from Ethereum or Binance or Solana, but from Ergo and Cardano, possibly.

But of course there needs to be something interesting to do on CKB first of all, otherwise it’s all pointless.

And your also missing the point that it also benefits CKB holders with the ability to use their CKB on those chains as well.

But this isn’t straightforward either, there needs to be liquidity on those chains for CKB/UDTs and also the integration of CKB/UDTs in individual projects.

2 Likes
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跨链桥这玩意最好还是中心化好

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Hi everyone,
this is my first post here, so I’ll try to keep it simple and honest.

Focusing specifically on the Rosen Bridge proposal, I think Matt’s concern is valid and important: over the years, CKB has often led with vision and infrastructure, while real, visible demand has lagged behind. That gap is frustrating and shouldn’t be dismissed.

At the same time, I also agree that some infrastructure has to exist before certain types of demand can realistically emerge — especially when targeting ecosystems that are philosophically and technically aligned with CKB (UTXO-based chains like Ergo or Cardano).

To me, the real question here isn’t “infrastructure vs usage”, but timing and sequencing:

  • Infrastructure without apps is fragile and hard to justify.

  • Apps without the right primitives often can’t exist at all.

In the case of Rosen Bridge, the evaluation hinges on whether it is treated as an isolated deliverable, or as part of a clearer path toward concrete products that must meaningfully touch CKB — whether through state usage, security settlement, or unavoidable L1 interactions.

If Rosen Bridge can realistically lower the barrier for aligned ecosystems to experiment and ship products that anchor value or state back to CKB, then its role as infrastructure becomes easier to justify. If not, the skepticism makes sense.

Personally, I’d like to see future infrastructure proposals more explicitly tie funding decisions to downstream usage assumptions — even if those assumptions are still experimental or uncertain.

Thanks for the thoughtful discussion — this kind of debate is exactly why I wanted to participate here.

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For anyone who’d like more materials on the Rosen Bridge workings, I personally like this explainer done by @Armeanio, still very accurate nowadays:

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Keep in mind that:

  1. The Kit provided by the Rosen team encapsulates most bridge logic (brain)
  2. The implementation will use standard well-tested L1 tech such as CCC, multisig, ACP…

The idea is that I work on 2. almost independently from @Alive24 & @jm9k and they will review independently. After that more the code will also be reviewed by the Rosen team.

As you can see for the Bridge workings the Audit is not really mandatory, cause all the most knowledgeable persons on the topic will review it in turn, still it’s nice to have

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比交易所还中心化的模式。。。我是极度反对跨链桥这种开倒车的工程的

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