🚴 Fiber Dev Log #3 🚴 Yes, we’ve seen your questions in the recent Nervos AMA on Reddit— “Is Fiber still alive?” “Why so quiet?” “Any actual updates coming?” Fair. We’ve been just building—and dropped Fiber v0.5, including: - breaking changes to contract behavior & config files - upgrades on performance, Watchtower, and channel handling. ➡️ The dev log:

GitHub

Fiber Dev Log 2025-04-17 · nervosnetwork/fiber · Discussion #668

Updates Features Fiber v0.5.0 Released Including breaking changes to both contract behavior and configuration files. View the release note for more...

Thanks to everyone in the community asking questions and following along!🩷 We're here NOT to chase trends or flood the timeline with hype, but for the long game—scalable, privacy-by-default P2P finance on the #Bitcoin principles.

Fiber v0.5.0 is released, including these breaking changes: - Type ID support for Fiber scripts & udt_whitelist dependencies - Empty cell_deps before computing signing messages - Channel RPC updates changed Release notes:

GitHub

Release v0.5.0 · nervosnetwork/fiber

BREAKING CHANGE This release includes break change for the contract and configuration file, and it is recommended to close the channel before upgra...

🚴‍♂️ Fiber Dev Log #2 🚴‍♂️ Still young, still growing! Here’s what’s been cooking in the past weeks: - Migration check tool: helps to determine whether a change needs a manual migration - RPC updates: new `list peer` added, unit tests & implementation - Better script parsing: now supports Type ID and UDT cell_dep Full dev log: github.com/nervosnetwork/fiber/discussions/632 Thanks to everyone following along! 🙌

🪵 Hi folks, we’re kicking off Fiber’s bi-weekly dev log series! This is where we’ll keep you posted on what we’ve been building. And we’d love to hear your feedback and see what you’re trying out. First update here:

GitHub

Fiber Dev Log 2024-03-20 · nervosnetwork/fiber · Discussion #604

👉 Releases Fiber is now undergoing mainnet testing, with two minor releases last week: https://github.com/nervosnetwork/fiber/releases/tag/v0.4....

Before the launch, we shared dev logs alongside CKB's—now Fiber has its own. You can find the pre-mainnet logs compiled here:

GitHub

Fiber Dev Log Archive: Pre-Mainnet (June 2024 - March 2025) · nervosnetwork/fiber · Discussion #601

Before Fiber launched on mainnet, its development updates were included in a shared dev log here alongside CKB. This archive compiles all Fiber-rel...

🧪 We've open-sourced a testnet demo for setting up and testing Fiber on a CKB-based testnet! Whether you're curious about Fiber or ready to build on top of it, this hands-on guide covers: - Compile and run Fiber nodes - Connect to a Lightning Network LSP node - Establish multi-hop payment channels (similar to how the LN routes payments) - Transfer CKBytes and UDT (user-define tokens) over Fiber - Close channels and finalize transactions Try it out and let us know what you think! Feedback is always welcome 🙌 🔗 ENG:

GitHub

fiber/docs/testnet-nodes.md at develop · sunchengzhu/fiber

Contribute to sunchengzhu/fiber development by creating an account on GitHub.

🔗 CHN:

GitHub

md/docs/fiber-testnet.md at main · sunchengzhu/md

markdown文档汇总. Contribute to sunchengzhu/md development by creating an account on GitHub.

👀 And for a quick peek, real-time info of nodes, channels, and paths are visualized here:

Lightning Network Visualization

🚧 Note: This is a temporary dev tool. A more polished one coming soon

👷 While we’re working on Fiber’s documentation, here’s something for those who love digging into the technical details! Written by the dev team, we unpack Fiber’s architecture, key modules, and future plans—with source code explained: https://yakihonne.com/naddr1qvzqqqr4gupzqjvpfs8lg4k8nale070cppm4z2rg70fz8z6h7ly7uucgnded2n4pqq2k7wzytfx4x3m4dar9ynpk0ycygdmp94kk7lagk77

What is Fiber and Why Does It Matter? 👇 1/ What is Fiber Fiber is a privacy-by-default, scalable network for fast, low-cost payments and swaps between digital assets. Aligned with Bitcoin’s principles, Fiber connects peers decentrally, ensuring security and efficiency without external consensus or centralized validation. 2/ What makes Fiber different? - Beyond channel network like Lightning, Fiber natively supports stable-coin payment and assets swap, unlocking new Bitcoin-based financial use cases. - Unlike sidechains and rollups, Fiber is not a chain. It scales off-chain with Bitcoin-aligned decentralization, privacy, and security, while achieving high efficiency without relying on external trust assumptions or complex cryptographic proofs. 3/ Why Fiber matters: - Bitcoin-aligned: Expands Bitcoin’s use cases while staying rooted in its decentralization principles. - Lightning-compatible: Works seamlessly with Lightning while adding flexibility and multi-asset support for payments & swaps. - Privacy-by-default & Efficient: No network-wide consensus; transactions are only visible to involved parties and settle quickly via direct peer-to-peer communication. 4/ Features rundown: - Multi-asset support: Supports stablecoins, RGB++ assets on the Bitcoin ledger, and UDT assets on CKB. - Ultra-low fees: Micropayments as small as 0.0001 cents, with fees as low as 0.00000001 cents. - Instant asset swaps: Swap any asset pair as long as a channel path is available. - Cross-network payments & swaps: Seamless transactions between the Lightning Network and Fiber. - Watchtower support: Helps node operators monitor and secure the network. - Multi-hop payments: Run a Fiber node and earn fees by facilitating payments. - Low latency: Transactions process with minimum delay (e.g., 20ms for 0.0001 cent payments). - High throughput: Transactions handled by involved peers without requiring network-wide consensus. - Enhanced privacy: Transactions are only visible to involved peers. - Advanced cryptography: Uses PTLC instead of HTLC for stronger security and privacy. - Composable with CKB Scripts: Integrates with other contracts and Scripts on CKB.

🚀 Fiber is live on mainnet! Fiber v0.4.0 marks the first-ever Mainnet deployment of the Fiber contract, with two bootnodes set up. An updated contract is also deployed on Testnet. ⚠️ Security audit in progress—start with small amounts when testing! This release includes multiple bug fixes and improvements. Check the full details & share your feedback:

GitHub

Release v0.4.0 · nervosnetwork/fiber

🚀 What's New Testnet: Deployed an updated version of fiber contract. Mainnet: First-time deployment of fiber contract on the mainnet, and set up...

Let’s scale P2P finance together! 💙

Hello, World? Or more like, Hello, Web 5! ⚡ This is Fiber Network—not a rollup, not a sidechain, but a channel network taking another shot at scaling Satoshi’s P2P eCash vision! Fully Lightning-compatible and enhanced with new features, Fiber brings fast, flexible, and efficient off-chain transactions for multi-asset payments to the Bitcoin ecosystem. Stay tuned for updates and insights as we keep building! #LightningNetwork #Bitcoin #nervos #ckb #utxo #web5