CKB development log for May is out. This month focused mainly on maintenance, infrastructure, and long-term improvements across the stack. • CKB v0.206.0 release • Progress on DAO / voting research • Faster storage and sync optimization work • Reproducible build pipeline progress • QUIC networking integration in progress • Continued CKB-VM and light client maintenance Full dev log:

GitHub

CKB Dev Log 2026-05-27 · nervosnetwork/ckb · Discussion #5215

Updates Features CKB v0.206.0 release CKB v0.206.0 was released on May 6, 2026. This maintenance release focuses on dependency upgrades, security p...

Another Nervos AMA is coming! 📣 This time, meet Raheem Jr, creator of Pocket Node — a mobile-first CKB light wallet for Android. Raheem Jr started developing on CKB after joining the CKBuilder cohort in August 2025, and is currently building Pocket Node to make interacting with the Nervos Network more accessible from mobile devices. 🛠️ Got questions about mobile CKB development, or curious about the CKBuilder journey? Join our conversation on Reddit: https://reddit.com/r/NervosNetwork/comments/1tgp6xt/the_pocket_node_ama/ Pocket node:

Pocket Node — Your phone is the node

A native Android wallet that runs a CKB light client on your device. No remote indexer. No custodian.

Github:

GitHub

RaheemJnr - Overview

Experienced mobile developer with a knack for crafting elegant and efficient mobile solutions. - RaheemJnr

AMA time again! This time with Retric from the DevRel team 🛠️ Retric has been part of Nervos' journey since the early days of CKB. Lately he's been building fun experiments on Fiber, such as Fiber Audio Player (a self-hosted podcast with streaming micropayments) and Fiber L402 (L402 paywall demo). Got any questions about CKB, Fiber, developer tooling, or what it's really like building these? Drop your questions on Reddit! https://reddit.com/r/NervosNetwork/comments/1t3bc8s/the_fiber_network_ama/ and we'll see you on May 12th 👋 @FiberDevs #ckb #nervosnetwork #fibernetwork

👷 Latest updates of CKB from the engineering side: Another month of refining the core and pushing optimizations, including improved CKB-VM ARM64 performance and ML-DSA work to help prepare for post-quantum standards. Also strengthening CKB-VM with a new differential testing framework to validate future optimizations. Other updates: - AI Tooling: Added SKILL.md for AI agents in ckb-debugger to streamline script debugging - Connectivity: Continued QUIC support for Tentacle to provides faster handshakes and better resilience against connection migration - Governance: Multiple DAO Treasury designs & voting directions under discussion - Maintenance: Upgraded toolchain to 1.95.0 and synced ckb-musl with upstream Full log:

GitHub

CKB Dev Log 2026-04-29 · nervosnetwork/ckb · Discussion #5191

Updates Features Differential Testing Framework for ckb-vm Implemented a differential test framework for ckb-vm. This provides a stronger foundatio...

CKB is entering a mature phase. Our work is shifting toward deeper optimization, faster verification, and reproducible infrastructure. Recent highlights: - Optimized SP1 verification: Reduced cycles from ~6000M to ~63M (~100x improvement) - SMT verification performance reached a production-viable level - ARM64 optimizations: streamlined Zba instruction handling by removing redundant ops Meanwhile, a new discussion is underway: Activating the Nervos DAO Treasury, exploring a shift to an on-chain, governance-controlled model Dev Logs will now move to a monthly cadence, reflecting a more focused, incremental development cycle. More in the full update ↓

GitHub

CKB Dev Log 2025-04-01 · nervosnetwork/ckb · Discussion #5159

Updates As CKB matures, development is increasingly focused on optimization, verification efficiency, and reproducible infrastructure. CKB continue...

Recent CKB development work: - We implemented 4 optimizations in the Aarch64 RISC-V handler in CKB-VM and benchmarked their impact. Fuzzing is being added before upstreaming. - A feasibility study for verifying SP1 zkVM proofs directly on CKB is complete. The approach appears workable, giving CKB the ability to verify mainstream zkVM proofs on-chain. - The bn128 library for RISC-V 64 has been released, enabling more efficient elliptic curve operations inside CKB-VM. - QUIC transport support in Tentacle is under investigation. - On-chain governance in design. Full log ↓

GitHub

CKB Dev Log 2025-03-18 · nervosnetwork/ckb · Discussion #5148

Features CKB VM Aarch64 Assembly Performance Optimization Implemented and benchmarked 4 optimizations for the Aarch64 RISC-V handler in ckb-vm. Det...

OpenClaw🦞+ Orange Pi 🍊 = ? Amazing work again by @wyltek1 on NerdMinerCKB--CKB's ESP32 solo miner! Forked the NerdSoloMiner, headed to bed... woke up to find the AI agent had ripped out SHA256 and dropped CKB's Eaglesong PoW overnight.🤯 Incredibly inspiring to see a solo builder hack together his own miner as a late-night personal project using AI. This is how grassroots decentralization and open-source are alive and well in Nervos. Repo:

GitHub

GitHub - toastmanAu/NerdMiner_CKB: NerdMiner V2 Eaglesong adaption

NerdMiner V2 Eaglesong adaption. Contribute to toastmanAu/NerdMiner_CKB development by creating an account on GitHub.

Builder notes:

Nervos Talk

The Lobster and the Pi

The lobster and the pi The last week I’ve had an inspirational, eye-opening, mind-blowing experience while using AI to craft code. I was spurred...

Personal site:

Wyltek Industries

Wyltek Industries — Embedded Blockchain Hardware & CKB Infrastructure

Open source embedded hardware, CKB protocol tooling, AI creative tools, and community infrastructure. ChainPay, Spawn Kit, BlackBox POS.

Image credits to @wyltek1

Latest dev log is out:

GitHub

CKB Dev Log 2025-02-25 · nervosnetwork/ckb · Discussion #5116

Features CKB VM RV64 Assembly Execution Mode feat: add rv64 assembly execution mode Added a new execution mode that allows ckb-vm to execute in ass...

Two key updates 🛠️ CKB-VM gets a speed boost. Added RV64 Assembly Execution to CKB-VM—expect massive performance gains on #RISC-V and high efficiency within #zkVM environments. Privacy-preserving TUI wallet The new Obscell TUI wallet is live. Privacy via stealth addresses and confidential transactions —built in just one week with an AI agent. (Shoutout to Rea-Don-Lycn for the Obscell foundation) That's the CKB edge: native L1 privacy built into the architecture. No need for a dedicated chains like Zcash or Monero. One more thing--the AI shift AI agents are killing the barrier to entry. Ambitious side projects are now weekend builds. CKB ecosystem is moving faster than ever.

#TeamCKB Dev log This sprint in CKB, we added an OpenRPC spec with an interactive browser (https://eval-exec.github.io/ckb-rpc), log subscriptions for real-time debugging, RV64IM assembly mode in CKB-VM, and improved RocksDB efficiency. We also released a TypeScript boilerplate for building CKB apps from smart contracts to UI. Write, test, deploy and interact with contracts using JS tooling. Full dev log:

GitHub

CKB Dev Log 2026-02-05 · nervosnetwork/ckb · Discussion #5100

Updates Features CKB OpenRPC JSON Specification (Draft): Added OpenRPC JSON spec for CKB RPC. Taking inspiration from Swagger and ReDoc, we also bu...

#TeamCKB Dev updates: Longer gap than usual since the last update (holiday weeks), so here’s a quick catch-up. Recent work includes: - Progress mode on mobile light clients with native Android support - Pushed a ~2.3× speedup in the VM with optimized SHA256 and SHA512 - Reduced SPHINCS⁺ verification costs by around 40%. - Shipped the quantum resistant lock script to mainnet For more technical details, check out the full dev log:

GitHub

CKB Dev Log 2026-01-21 · nervosnetwork/ckb · Discussion #5091

CKB Light Client We met some limitations and issues when bringing CKB Light Client to mobile devices. To resolve these blockers, we have made targe...

☕️ #TeamCKB Major development updates in this sprint: - Shipped CKB v0.204.0 with native proxy / onion support - Released OffCKB v0.4.3 & v0.4.2 - Ongoing improvements on the light client and Rust toolchain On the VM side, added CFI extension support, including compiler (LLVM) runtime updates, fuzzing tests, and docs. Full log:

GitHub

CKB Dev Log 2025-12-24 · nervosnetwork/ckb · Discussion #5073

CKCon2025 @ Chiang Mai Updates Releases & New Features CKB Release note: https://github.com/nervosnetwork/ckb/releases/tag/v0.204.0 Add proxy and o...

🧅 Tor / Onion networking, now in CKB v0.204.0: Privacy, reachability, and censorship resistance—Tor improves node behavior in three ways: - IP privacy: no direct exposure of your real-world address. - Inbound reachability: accept peers without port forwarding. - Censorship resistance: harder to block, harder to observe. Run your node over Tor guide:

Run a Node Over Tor | Nervos CKB

CKB’s Tor/Onion integration gives node operators better privacy and network resilience:

Config details:

Node Configuration | Nervos CKB

Introduction

CKB v0.204.0:

GitHub

Release ckb 0.204.0 (555140e 2025-12-15) · nervosnetwork/ckb

Highlights v0.204.0 introduces network privacy features with proxy and Tor onion support (#4733), along with performance improvements including asy...

CKB update time 🎧☕️ This sprint we primarily focused on reliability & efficiency On CKB: - A default time-cost limit is added on indexer RPC to help keep heavy queries in check - Relay now sends messages asynchronously, so network congestion won't drop them On Molecule (serialization framework): You can now build any Molecule type from an iterator or `Vec`, with automatic item type conversion And RISC-V CFI support is coming to CKB-VM for extra control flow security. All the details here:

GitHub

CKB Dev Log 2025-11-26 · nervosnetwork/ckb · Discussion #5014

Updates Releases (No major feature releases this sprint.) Improvements CKB Add Default Time Limit to Indexer RPCs: #5012 This feature adds a defaul...

Another experimental demo is out🌱 Join Airdrop — a lightweight airdrop-lock contract where users fund their own Cells first to register for the airdrop & receive tokens. Built entirely in TypeScript. What it solves: In CKB's cell model, airdrop issuers typically need to provide extra CKBytes so receivers can accept tokens. Join Airdrop flips this around — users join first and prepare their Cells themselves, making token distribution a lot smoother. It's a simpler, more scenario-specific alternative to the more general AnyOneCanPay script: https://github.com/cryptape/anyone-can-pay. 🪂 Try it out:

React App

Web site created using create-react-app

🐙 Repo:

GitHub

GitHub - RetricSu/join-airdrop: a simple airdrop-lock contract that requires users to join first in order to get airdrop for a specific UDT token

a simple airdrop-lock contract that requires users to join first in order to get airdrop for a specific UDT token - RetricSu/join-airdrop

🙋Got ideas or feedback? Join the discussion on Nervos Talk:

Nervos Talk

A simple Airdrop demo

CKB is very flexiable consider its programing model and how things usually works. But from the very past, I feel like there is a preference of disc...

CKB update time ✅ - Shipped CKB 1.0.0 crates (ckb 0.204.0-rc1) & CKB-VM CFI extension (initial Rust-based interpreter support) - Core & Docker builder now use Rust 1.91.0; bootstrapper upgrade in progress - Improving TUI experience - Fixed a boot issue on Windows 10 flagged by the community — thanks for catching it! 🩹 Tip: For huge run.log files, try logrotate (https://github.com/logrotate/logrotate) and big-file editors for now. We'll be working on better log handling as chain data grows! Full dev log:

GitHub

CKB Dev Log 2025-11-12 · nervosnetwork/ckb · Discussion #5002

Updates Releases & Milestones Published CKB 1.0.0 crates (ckb 0.204.0-rc1): https://crates.io/crates/ckb/0.204.0-rc1/dependencies Published CKB-VM ...

This sprint's dev updates: - Released ckb v0.203.0 — Rust SDK had some breaking changes; migration tool is ready 🔧

GitHub

Release ckb 0.203.0 (88d1126 2025-10-22) · nervosnetwork/ckb

Highlights BREAKING: #4910 introduces breaking changes to the Rust SDK. There's a tool to migrate old codes: https://github.com/driftluo/ckb-gen-ty...

Alongside it: - ckb-cli v1.16.0 - ckb-vm-contrib v0.203.0 Full log:

GitHub

CKB Dev Log 2025-10-29 · nervosnetwork/ckb · Discussion #4988

Updates Release & Features ckb v0.203.0 released https://github.com/nervosnetwork/ckb/releases/tag/v0.203.0 BREAKING: #4910 introduces breaking cha...

Another mini project out ☕️😎 Exploring what Web5-style payments could look like—Spillman Payment Channel—blending AI chat w/ off-chain micro-payments: - Chat with AI, pay per message automatically, off-chain - Web2-level friendly UX + Web3-level security & privacy - Using CKB's UTXO model for safe "sign first, settle on-chain later" payments Best part? Contract work all done in JavaScript! 🥳 Fun fact: this demo was built by a front-end dev new to CKB and even blockchain. Turns out you don't need to be a pro to get a payment system up and running. Of course, it's open source:

GitHub

GitHub - HappySonnyDev/SpilmanPayment: Spilman Payment Channel With CKB

Spilman Payment Channel With CKB. Contribute to HappySonnyDev/SpilmanPayment development by creating an account on GitHub.

Also check out his development journey and see how a front-end dev tackled CKB for the first time:

Nervos Talk

不用绑卡，边聊边付：一个 Web3 版的支付实验

大家好，我是 Sonny，一个 Web3 新手。 在一个月前，我对区块链的理解还停留在“比特币很贵”“以太坊能发币�...

🛠️ Bi-weekly progress check from TeamCKB In the past sprint, we tagged CKB v0.203.0-rc1. VM also moved forward: - Quantum-resistant lock Script deployed on mainnet - C-version SMT support landed Meanwhile, the team is pushing forward on reproducible bootstrap design, CKB crates 1.0, a new TUI, and more. Dev log:

GitHub

CKB Dev Log 2025-10-01 · nervosnetwork/ckb · Discussion #4969

Updates Releases & Features CKB v0.203.0-rc1 released: https://github.com/nervosnetwork/ckb/releases/tag/v0.203.0-rc1 Quantum-resistant lock script...

Bi-weekly dev log just out ✅ Feature drop this round: - Released Rust SDK 4.3.0 & 4.4.0 + Light Client 0.5.3 - JS HTLC Script demo with new offckb toolchain - New reproducible build workflow Full log:

GitHub

CKB Dev Log 2025-09-17 · nervosnetwork/ckb · Discussion #4957

Updates Features & Releases Released ckb-sdk-rust v4.3.0 & 4.4.0: https://github.com/nervosnetwork/ckb-sdk-rust/releases/tag/v4.4.0 https://github....

Lately it's been a lot of digging into syscalls, chasing down perf edges, and smoothing dev tools. Some notes from the past sprint: - CKB-VM: syscall tracer improvements - CKB-CLI: dep_group deployment now works with Type ID - Ledger app: added support for the "other" address type - Syscall behavior adjusted for fuzzing/debugger use Next release is shaping up. 🚀 Details here:

GitHub

CKB Dev Log 2025-08-20 · nervosnetwork/ckb · Discussion #4939

Updates Improvements CKB-VM Syscall Enhancements & Performance Optimization Implemented load data as code in syscall tracer: nervosnetwork/ckb-vm-c...