CKB DevRel @CKBDevrel

This log will introduce the things I found interesting between 1.0.0 and 2.0.0. CCC is no longer just a novel experiment; it has gradually become a reliable foundation. Perhaps we have reached the time to build a Tower of Babel. blog.hanssen0.com/articles/do_yo…

Hanssen - 箏 @Hanssen0

5 months ago

2.0.0，CCC 看起来像是正经项目了。这篇日志会介绍 1.0.0 到 2.0.0 之间我觉得有趣的东西，可能已经上线一年了，也可能还在开发中。CCC 不再只是个新奇的试验品，还逐渐成为了可靠的地基，或许我们已经到了要建造一座通天塔的时候。 blog.hanssen0.com/articles/do_yo…

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CKB Ecosystem Biweekly Update Last week, CKCON25 convened in Chiang Mai, Thailand, where the community and core teams discussed the future development direction of the CKB ecosystem. Here is your biweekly round-up: Infrastructure & Tooling 🛠 The new CKB explorer is live! Based on community feedback, @APP5Labs is releasing updates every 2 weeks. UDT display is now supported. Full migration by the end of January. test.explorer.app5.org explorer.app5.org, looking forward to your feedback: x.com/APP5Labs/statu… @FiberDevs released Fiber Network v0.6.0 and deployed it to the testnet. The mainnet contract will be deployed in v0.6.1. The Dashboard has also been improved. @CKBdev released OffCKB V 0.4.2. A minor CKB version is upcoming to enhance performance/security and reduce RPC DDoS risks. @CKBdevrel: Reviewing PRs from SupeRise for the CCC library. @rgbppfans: RGB++ Development Guide is under internal review. Web5 & DAO 🌐 BBS successfully launched on mainnet! v0.2 is complete, and the team is now working on v0.3 (Admin dashboard & feedback optimizations), targeting a Jan 8th release. The Web5 DID Toolbox is live, web5fans.github.io, featuring functions like DID cell destruction. DAO 1.1 repository is now public: github.com/CCF-DAO1-1. DAO MVP is complete, with a Mainnet launch target of mid-February. Spark Program Updates ✨ We now have a dedicated GitHub to track and archive open-source content: github.com/Spark-Program Blackbox: The team demoed prototypes on-site at CKCON25! 2 units delivered in person, 2 in customs, and 2 awaiting notification. New Project: Welcome AirFi, a decentralized WiFi-sharing platform built on Nervos. WarSpore-saga: Icon assets have been open-sourced. Somo: Technical development completed. The project has now concluded. Let's keep building! 🏗

APP5Labs @APP5Labs

7 months ago

👋 Hello to all CKB community members! To further improve the user experience and optimize performance of the CKB Explorer, and after long-term development and multiple rounds of testing, the reconstructed CKB Explorer (Beta version) is now available for public testing! Public

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CKB Ecosystem Biweekly #5 Hello CKB builders! It's time for our latest biweekly update. The ecosystem continues to grow with significant advancements across core infrastructure, developer tooling, and innovative Web5 applications. Here’s a summary of the latest progress: Infrastructure & Core Protocol ✨ - Updates include ACP Proxy (github.com/XuJiandong/any…) and ACP Auth migrating to Script Template (github.com/nervosnetwork/…). - A critical bug in CKB 0.203 affecting light client synchronization has been identified, and an RC2 version is currently being deployed to address it. CKB Crates will update to v1.0, and Molecule is moving to a new version with migration tools provided. - @FiberDevs has successfully fixed the Fiber Network fund loss issue and is now conducting extensive large-scale testing to ensure stability and security. Developer Tools & SDKs 🛠 - @CKBdevrel has released a Canary version of the DOB Render SDK within CCC (github.com/ckb-devrel/ccc…) - @rgbppfans has fixed redundant Paymaster fees in the RGB++ SDK (github.com/RGBPlusPlus/rg…). - A new educational page for CKB wallet and address concepts from @CKBdev (craft-ckb-address.vercel.app) has been launched. Web5 & Ecosystem 🚀 - DAO 1.1: Login and proposal publishing are complete, with voting integration currently underway. - BBS: The team is progressing on post and section management pages, and actively designing an ACP-based tipping solution for micropayments. - Web5 Standards: Daily documentation updates are being made for Web5 WIP (Work-in-Progress) protocol standards, which will eventually be transferred to the web5fans repository. Efforts are also being made to define the scope of these standards and plan an official Web5 website. - In a moment of profound validation, Michel Bauwens @mbauwens of the P2P Foundation has created a dedicated wiki page for Web5. This recognizes the vision for a decentralized web built on Bitcoin, as we are building with RGB++, Fiber Network, and USDI. Check out the page here: wiki.p2pfoundation.net/Web5 - The Neuron iCKB mis-transfer issue for Neuron users has been successfully resolved. Spark Program Updates 🌱 - Blackbox: We're excited to announce a new Spark grant for Blackbox (By @ckbsamurai and Phillip), a hardware-based POS terminal by Neon and Phillip. This project aims to enable both fiat and crypto payments, focusing on CKB L2 / Fiber assets to bridge on-chain settlement with real-world merchant adoption. - SoMo - Pixel Territory (By @tecmeup): The project now features multi-wallet support (JoyID, UTXO Global, Metamask), a live balance display, influence scoring, a real-time leaderboard, and extensive UI/UX enhancements, including responsive desktop design and social sharing. Pending tasks include Spore Protocol integration and database migration. - Project Tracking Platform (By Emmanuel): The backend demo is live (youtube.com/watch?v=EG7_mF…). Next steps include UX/UI improvements, automated reminders, and integration with the Nervos Discord server. The future is being built, piece by piece. Stay tuned for our next update!

⚠️ VM Security Update for Devs As part of strengthening CKB, we regularly review older VMs and share issues we find. One of CKB's strengths: you can always choose past VM versions. This design keeps asset ownership safe—even through hardforks. 🔐✅ But older VMs aren't without risks. In our theoretical analysis, we found that v1 `exec` might display deterministic but non-standard behavior in certain edge cases, potentially leading to unexpected script execution results. ⚠️We recommend developers avoid `exec` in VM v1. In cases like this, we may add protective measures (e.g., at the mempool) to filter risky txs. These are NOT consensus changes—VM choice stays yours. The network adds safeguards, but you remain in control. 🛡️ More on Security Measures for VM Issues: docs.nervos.org/docs/script/vm… @CKBDevrel @NervosNetwork @CKBEcoFund

【⚠️ Patch Update: Infinite Loop Risk in *@ckb-ccc/core* Library】 Heads up, CKB developers. We have identified and fixed a critical bug in the *@ckb-ccc/core* library that could cause your application to freeze when building transactions. The Issue: When using an affected version of *@ckb-ccc/core*, after successfully sending a transaction, any attempt to build and send a second transaction will trigger an infinite loop. This will cause the front-end or back-end service to become unresponsive. Affected Versions: All versions of *@ckb-ccc/core* from 1.11.0 to 1.11.3 are affected. Root Cause: The problem was traced to a faulty LRU cache implementation introduced in PR #244, which resulted in an infinite loop. For more technical details, please see the tracking issue: github.com/ckb-devrel/ccc… ✅ Solution & Patched Version: This bug has been completely resolved in version v1.11.4. The update details are available in PR #297: github.com/ckb-devrel/ccc… We strongly urge all developers using the affected versions to immediately upgrade *@ckb-ccc/core* to the latest version (v1.11.4 or higher) to ensure the stability and security of your applications. We apologize for any inconvenience this bug may have caused. Thank you for your understanding and support. #CKB #Blockchain #Bugfix

@miner8811 Updated the tweet to make it less misleading. Thank you so much for the feedback!

The CCC SDK has recently released a patch to improve compatibility with the latest JoyID scripts. 🩹 Developers using the CCC SDK are encouraged to update to maintain optimal compatibility. ​🔗 GitHub PR: github.com/ckb-devrel/ccc… ​This is also a great opportunity to share an interesting aspect of CKB's smart contract design: How do contracts on CKB handle upgrades? 🤔 ​On CKB, every smart contract can have a permanent, unchanging identifier called a Type ID. Think of it like a house's street address 🏠. Even if you renovate entirely the inside of the house (i.e., update the contract code), the street address (the Type ID) remains the same. ​This means when developers need to fix bugs or add new features, they can securely replace the old contract with a new version under the same "address." For users and other apps, this process is usually seamless. ✅ They just continue to interact with the original Type ID and automatically get the latest features. ​Meanwhile, CKB's underlying rules ensure that only the contract's administrator can perform this upgrade, making the entire process secure and controlled. 🛡️ If you are interested in how the idea of ​​Type ID relates to single-use seals, feel free to dive deeper with this article: 📖 talk.nervos.org/t/en-cn-misc-s… ​#CKB #Nervos #SmartContracts #Blockchain #Developer

@miner8811 There are many conceptual similarities between a Single-Use Seal and a Type ID. This article begins by explaining the concept of a Single-Use Seal and gradually introduces the thinking behind Type IDs.

Hello CKB community! Welcome to our Biweekly update. The ecosystem is consistently moving, with significant progress across core infrastructure, developer tools, and Web5 applications. Web5 Apps & Community 🚀 - The first "Category A" Web5 application, BBS (Byte Builders Society), is now under development. An internal version of the BBS forum is ready for testing at bbs.fans and is accepting new members via a whitelist. - @RunningCKB is planning for CKCON 2025. Looking forward to seeing you, our excellent builders, there! - The @CKBEcoFund Spark grant program continues to grow, with two new project applications currently being reviewed (discord.gg/j54P7HnH). - @CKBEcoFund is preparing an optimizing proposal for the Community Fund DAO based on Web5 tech to meet growing governance needs. Infra, Core Tech, & Developer Tools ⚙️ - @CKBdev is preparing a stable 1.0 release of CKB Rust Crate, which will reduce future development effort for the community (github.com/nervosnetwork/…). They are also updating developer documentation on the Exec syscall issue and providing new resources on script fuzzing (github.com/nervosnetwork/…) and JS contract case (github.com/RetricSu/merkl…). - @CKBdevrel has pushed several updates to CCC, enhancing developer experience, performance, and configurability (eg, github.com/ckb-devrel/ccc…). - @rgbppfans has verified RGB++ Lock updates on the testnet, and a contract update is planned for this week. Work is also underway to support SPV services for Electrs TX Proofs (github.com/RGBPlusPlus/ck…). - @FiberDevs is preparing the Fiber Network 0.6 release, which will include WASM and security fixes. - @APP5Labs finished maintenance for current CKB explorer and is addressing a high volume of transactions on the testnet by optimizing APIs. - @joy_protocol is working on implementing instant convert (based on @xxuejie's open-sourced work github.com/xxuejie/ckb-ud…). This will allow users to pay for transactions with USDI stablecoins, so they only need to focus on their USDI balance without worrying about holding CKB for fees. The builders are hard at work! Stay tuned for more updates. #CKB #Web5 #RGBpp #Developer #Nervos

🚴 Fiber Dev Log 12 🚴 Our recent work has centered on reliability — more end-to-end testing for funding tx verification, better shutdown handling, and perf improvements. The Cross-Chain Hub (CCH) got a major update too: it now runs independently with persistent state storage. And Fiber 0.6.0-RC 2 is ready: github.com/nervosnetwork/… Looking forward, we're working on Atomic Multi-Path Payments (MPP) and continuing DAO discussions. Dev log: github.com/nervosnetwork/… @NervosNetwork @CKBDevrel

An array stores many values of the same type in a continuous block of memory. ​A union stores only one value at a time, but it can be one of several different types. ​Both are fixed in size, but an array is for collections of one type, while a union is for a single value of a varying type.

In data structures, a "union" is like a magic box that lets you choose one item (data type) from several options. It's incredibly flexible, but it has a catch: if the items have different sizes, the "union"'s total size is variable. This makes it incompatible with a "struct", which is like a precision container where every compartment must have a fixed, predefined size. This has limited how we can compose complex data on-chain. 💡 But here's a key insight: what if all possible members of a "union" just so happen to be the exact same size? In that specific case, the "union" itself naturally becomes fixed-size! This isn't a new constraint we're adding; it's a powerful, inherent property we can now leverage in Molecule, CKB's serialization format. This discovery unlocks the ability to embed these "unions" seamlessly into "structs", enabling more elegant and standardized definitions for complex data structures, like the Cell Data for UDTs. 🎉 A huge thank you to community contributor Phroi for their excellent work in formalizing this concept! It has been merged into the CCC - CCC is CKBer's Codebase. Learn more and get involved: ➡️ The PR: github.com/ckb-devrel/ccc… ➡️ The CCC Repo: github.com/ckb-devrel/ccc We warmly invite everyone to contribute their insights and proposals to the CCC and help build a stronger #CKB ecosystem together! #Nervos #Molecule #Blockchain #Tech #DataStructures

Nervos community developer “Tea” ( github.com/tea2x)’s project Quantum Purse has completed the CKB Eco Fund Spark Program. We spoke with Tea in a written interview, discussing the project’s origins, key technical decisions, and some behind-the-scenes stories only a developer could tell. The full conversation is below: EN talk.nervos.org/t/ckb-eco-fund… CN talk.nervos.org/t/ckb-eco-fund… Enjoy the read and spark the ecosystem together! @CKBDevrel @NervosNetwork #web5 #BTC

It's fantastic to see the #CKB open-source spirit in action! We'd like to give a special thank you to Phroi (github.com/phroi), a long-term community contributor and the brilliant mind behind the iCKB protocol. For those who may not know, Phroi created iCKB to bring liquidity to assets staked in the Nervos DAO. Now, he's channeling that same expertise into improving CCC, our core toolkit for JS/TS developers. His recent contributions focus on optimizing performance and refining the codebase, making CCC faster and more robust for everyone. When veteran builders like Phroi contribute to foundational tools, the entire ecosystem benefits. Thank you for your continued dedication, Phroi! 🙏 Inspired to contribute? Our GitHub is open to all: github.com/ckb-devrel/ccc

CKB Ecosystem Biweekly #1 Hello CKB community! Welcome to our first Ecosystem Biweekly update, where we'll highlight the progress from our builders. Here’s what’s been happening: - A landmark moment for the Bitcoin and CKB ecosystem! The RGB++ Association (@rgbppfans) is now officially established with a brand new, developer-focused website: rgbpp.com. This provides a rich portal of documentation, specifications, and tutorials to empower the next wave of RGB++ builders. - Our developer tooling is getting stronger. @CKBDevrel's CCC has merged multiple community PRs (h/t phroi! github.com/phroi), delivering significant performance improvements and enhanced configurability. This is what open-source collaboration looks like! - Lightning infrastructure continues to advance. @FiberDevs is building a new dashboard to enhance user experience on the Fiber Network. Meanwhile, Fiber 0.6 RC-1 is under stress testing, with the upcoming release featuring crucial updates like WASM support and security fixes. - The Web5 vision is no longer just a concept, it's a reality. The very first Web5 application, Xiangjian DAO, has been deployed and is live at xjdao.xyz! This is a pivotal step towards building truly user-centric applications, with many more in the pipeline. - @OmigaHQ has completed the core development for its BTC Layer 1 DOB trading features. The module is now undergoing rigorous internal testing. - @magickbase has successfully assisted @Ledger in adapting the new Multisig to support data2. The ecosystem is building relentlessly. Stay tuned for our next update in two weeks! #CKB #Web5 #RGBPP #BTC #DOB #Fiber #Dev

✅ Meepo Hardfork completed at epoch 12293. Spawn syscall and CKB-VM v2 now live. explorer.nervos.org/hardfork If your node isn’t syncing blocks, please upgrade to the latest version. ⚙️ Upgrade: github.com/nervosnetwork/… @NervosNetwork @CKBEcoFund @CKBDevrel @NervosNation #nervos #ckb #meepohardfork #hardfork

An update has been long overdue, but we've got plenty of new features now live on imagination.to! Where to begin? (1/5) Let's start with multi-chain wallet (CCC)! One wallet, unified multichain management - including #Bitcoin and $CKB - and greater convenience for you

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#TeamCKB Dev updates Last sprint, we wrapped up a multisig upgrade along with tooling updates. It’s all about improving compatibility between multisig scripts and NervosDAO withdrawals. - If you’re using multisig, upgrade now to stay safe and compatible. - If you're using NervosDAO with a single-signature address, you won’t be directly affected—but we still recommend upgrading for better stability. Also, DID PLC Registry is now available on CKB. Originally developed by @bluesky, now bridging CKB with the web5 decentralized social network. Full dev log: github.com/nervosnetwork/… @CKBDevrel @NervosNetwork

If you’re using NervosDAO with multisig, this upgrade is especially for you. We've fixed a rare edge case in the multisig script where DAO withdrawals could fail if the multisig script didn’t include a since value. This update improves compatibility between multisig scripts and DAO withdrawals. ✅ What’s fixed: - Contract logic now properly handles since conditions - Added test coverage - All major tools updated for compatibility: Rust SDK v4.0.0: github.com/nervosnetwork/… Go SDK v2.4.0: github.com/nervosnetwork/… Java SDK v4.0.0: github.com/nervosnetwork/… CKB-CLI v1.15.0: github.com/nervosnetwork/… CCC SDK ckb-ccc/[email protected]: github.com/ckb-devrel/ccc… CKB Explorer: github.com/Magickbase/ckb… ⚠️ If you're using an older SDK, upgrade now—older versions may NOT be compatible and may cause unexpected behavior. Thanks for rolling with us! 🫡 @CKBDevrel @NervosNetwork