🚴 Fiber Dev Log 30 🚴 Recent work has focused mainly on reliability, security hardening, and edge-case handling as we move toward the v0.9 release. That work is reflected in v0.9.0-rc2, including updates around migrations, funding persistence, parsing, routing behavior, and channel handling. We're also continuing review and polish work around trampoline routing, forwarding behavior, amount validation, browser integrations, and developer tooling/docs. This stage of the release cycle has focused more on improving behavior under failure cases and long-running operation than on introducing major new features. Full dev log: 👇

GitHub

Fiber Dev Log 2026-05-28 · nervosnetwork/fiber · Discussion #1382

FiberNetwork with booths on Bitcoin2026 Updates Features v0.9.0-rc2 Pre-Release Published Fiber v0.9.0-rc2 as the latest release candidate in the v...

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! 💙