TeamCKB Dev Log (Updated: Dec 24, 2025)

[CKBdev]

Updates

Oct 29, 2025

Release & Features

• ckb v0.203.0 released Release ckb 0.203.0 (88d1126 2025-10-22) · nervosnetwork/ckb · GitHub
  • BREAKING: feat: impl from/into for gen-type #4910 introduces breaking changes to the Rust SDK. A migration tool is available: ckb-gen-type-migrate
  • Added metrics for indexer’s tip metrics: add indexer_tip metrics #4982
  • Fixed an indexer syncing bug Indexer: catch up with primary after rollback #4980
  • Set Molecule size limit to 1.8MB fix: Consider headers of molecule objects when limiting size of BlockFilters message #4978
• ckb-cli v1.16.0 released Release v1.16.0 · nervosnetwork/ckb-cli · GitHub
• ckb-vm-contrib v0.203.0 released Release protobuf-ckb-syscalls-v0.203.0 · nervosnetwork/ckb-vm-contrib · GitHub

Improvements & Fixes

• Fixed a memory leak in ckb-light-client Use tikv-jemallocator on non msvc platform and set rocksdb options ckb-light-client#249
• Refactored ckb-debugger implementation using syscall-tracer Refactor debugger by syscall-tracer ckb-standalone-debugger#193

In Pipeline

• Preparing a preview version for ckb-tui
• Migrating CKB from SledBackend to ckb-rocksdb Replace SledBackend by ckb-rocksdb #4956
• Ongoing work on ckb-bootstrapper
• Adding support for CFI extension in ckb-vm
• Optimizing message compression for ckb perf: improve compress impl #4986, feat: change compress #4979
• Continuing progress towards ckb v1.0

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

[CKBdev]

Updates

Nov 12, 2025

Releases & Milestones

• Published CKB 1.0.0 crates (ckb 0.204.0-rc1): crates.io: Rust Package Registry
• Published CKB-VM CFI extension (initial Rust-based interpreter support): GitHub - mohanson-fork/ckb-vm at cfi

Improvements

• Toolchain
  • Upgrade to Rust 1.91.0
    • Core: https://github.com/nervosnetwork/ckb/pull/4992, https://github.com/nervosnetwork/ckb/pull/4993,
    • Docker builder: toolchain: Upgrade rust toolchain from 1.85.0 to 1.91.0 ckb-docker-builder#34
• Network & performance
  • Compression optimization:
    • Disable Filter protocol compression: feat: disable compress on filter #4996
    • Optimized message compression: perf: improve compress impl #4986
• Observability & tooling
  • CKB-TUI: added new directly consumable metrics (System Info, Hash Rate, Committing Txs, Latest Incoming Txs)

Fixes

• Windows MSVC compatibility checkAdded MSVC version check on Windows to prevent startup exit on Win10 due to older MSVC:
  • Discussion: ckb 0.203.0 (88d1126 2025-10-22) #4987
  • Fix PR: windows: Hint windows user to install latest vc-redist if host vc-redist is lower than 14.44 #4997

In Pipeline

Core & Tooling

• Complete ckb-bootstrapper Rust 1.91.0 upgrade and HeaderMap replacement.
• Enhance ckb-tui data interfaces, add caching, and continue collecting new metrics and requirements.
• Finish CKB-VM CFI interpreter support and testing (port LLVM CFI tests; add unit tests).
• Introduce terminal module for ckb-tui to expose runtime metrics: feat: add Terminal module for CKB-TUI data provision #4989

Networking

• Investigate and fix issue: non-blocking transaction relay stops processing when buffer is full (newly discovered).
• Continue investigating abnormal testnet uncle rate.
• Prep for the next hardfork post-Meepo milestone (coordination ongoing).

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

[CKBdev]

Updates

Nov 26, 2025

Releases

(No major feature releases this sprint.)

Improvements

CKB

• Add Default Time Limit to Indexer RPCs: feat: add default time cost limit on indexer rpc #5012This feature adds a default time-cost limit to indexer RPCs to cap linear-time queries and reduce the attack surface as data volume grows.
• Async Message Sending in CKB Node: feat: relay use async send msg #5001Updates the relay to send messages asynchronously, preventing message drops during network congestion caused by limited send capacity.

Molecule

• Generate FromIterator with Generic Types: feat: generate FromIterator with generic type molecule#105Allows a Molecule entity to be created from any iterator or Vec of items, automatically converting each item to the entity’s required type.

Fixes

• Improve Contract Crash Logging in ckb-js-vm: Fix the problem of printing logs after some contracts crash ckb-js-vm#93Fixes contract crash logging in ckb-js-vm by outputting error details to logError, including CrashStack on verification failures, and correcting crash file path parsing.

In Pipeline

• RISC-V CFI (Control Flow Integrity) support in CKB-VM: [WIP] Implement CFI by mohanson · Pull Request #492 · nervosnetwork/ckb-vm · GitHub
• Terminal module for TUI data provision: feat: add Terminal module for CKB-TUI data provision #4989
• Headers sync using ckb-rocksdb: Replace SledBackend by ckb-rocksdb #4956
• Light Client: fix for sync stalling on uncle blocks during reorgs Fix sync stuck on uncle blocks during reorgs ckb-light-client#250
• Performance improvements for get_cell_capacity RPC
• Prioritize proposal tx in verification: Verify worker will pick proposal_tx first #5009Ensures that the verification worker processes proposal transactions first, giving them higher priority in the verification queue.

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

[CKBdev]

Updates

Dec 24, 2025

Releases & New Features

CKB

• Release note: Release ckb 0.204.0 (555140e 2025-12-15) · nervosnetwork/ckb · GitHub
  • Add proxy and onion support for ckb-network Add proxy and onion support for ckb-network #4733
• Introduced a default time limit for indexer RPC: feat: add default time cost limit on indexer rpc #5012

OffCKB

• v0.4.3: Release v0.4.3 · ckb-devrel/offckb · GitHub
• v0.4.2: Release v0.4.2 · ckb-devrel/offckb · GitHub

Improvements

Light Client

• Refactored wasm32 & non-wasm32 functional call: Refactor: Reduce wasm32 and non-wasm32 platform duplication code ckb-light-client#254
• Removed RelayerV2 relayer: remove RelayV2 init code ckb-light-client#252
• Show binary version, built time in --version and loging startup ckb-light-client#256
• Added NodeJS support for light client wasm: NodeJS support for light-client-wasm ckb-light-client#259

Toolchain

• Tool chaUpgraded Rust toolchain from 1.91.0 to 1.92.0 toolchain: upgrade toolchain to 1.92.0 ckb-docker-builder#35 Upgrade rust-toolchain from 1.85.0 to 1.92.0 #4993

CKB-VM

• Added CFI extension
  • Updated compiler (LLVM) runtime libraries
  • Added documentation: Add CFI document ckb-vm#499
  • Added fuzzing tests: chore: add CFI fuzzing ckb-vm-fuzzing-test#15

Documentation

• Added explanations for core CKB features in tech explanation: feat: add CKB Features in tech explaination docs.nervos.org#706

Fixes

Transaction Pool

• Optimized the Transaction Pool for Handling Chained Transactions: fix: overhaul proposal selection and prioritization logic #5023

CKB-TUI

• Fixed several issues Fix some issues pointed out by Retric Officeyutong/ckb-tui#8

In Pipeline…

• Replacing sled with ckb-rocksdb in header-sync.
  • Tasks include documentation design, benchmark results, rocksdb key schema modification.
• Optimizing hash function at assembly level to reduce the consumption of contract cycles
• Working on a report on the libraries (e.g. secp256k1, Mbed TLS) used in on-chain scripts
• Developing mobile support for Light Client
• Completing the missing metrics for CKB TUI
• Ongoing work on CFI Extension of CKB-VM, including conduct compatibility verification testing, performance testing on the testnet, and an RFC.

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

[Ophiuchus]

Solid update overall !
Great to see continued progress on reliability, light clients, CKB-VM security, and developer tooling.
These improvements clearly strengthen the foundation and move the network in the right direction.