Fiber DocsNetwork Resources
All Fiber Testnet resources in one place — public nodes, faucets, explorers, and more
This page is the single source of truth for Fiber Testnet resources. All public nodes, faucets, and tools are listed here.
Testnet resources may change without notice. This page is updated to reflect the current state. If you find outdated information, please open an issue.
Public Nodes
Mainnet
| Name | Pubkey | Auto-accept CKB | Auto-accept UDT |
|---|---|---|---|
| fiber-mainnet-public-ca | 03a8d7da8d0934363dbc17f52c872e8d833016415266eabb3527439c5dd17adc6b | ≥ 499 CKB | USDI ≥ 0.1 |
| fiber-mainnet-public-tokyo | 033a69e5be369dab43aefa96fa729d83c571ccb066f312136c6ab2d354fcc028f9 | ≥ 499 CKB | USDI ≥ 0.1 |
Testnet
| Name | Pubkey | Auto-accept CKB | Auto-accept UDT |
|---|---|---|---|
| fiber-testnet-public-bottle | 02b6d4e3ab86a2ca2fad6fae0ecb2e1e559e0b911939872a90abdda6d20302be71 | ≥ 499 CKB | RUSD ≥ 20 |
| fiber-testnet-public-bracer | 0291a6576bd5a94bd74b27080a48340875338fff9f6d6361fe6b8db8d0d1912fcc | ≥ 499 CKB | RUSD ≥ 20 |
Since v0.8.0, Fiber uses pubkey (hex-encoded secp256k1) for peer identification. Use connect_peer with the pubkey — the node will resolve the address automatically via gossip.
Faucets
| Resource | URL | Notes |
|---|---|---|
| CKB Testnet Faucet | https://faucet.nervos.org | Get testnet CKB |
| RUSD (Stablecoin) | https://testnet0815.stablepp.xyz/stablecoin | Mint testnet RUSD stablecoin |
Block Explorers
| Resource | URL |
|---|---|
| CKB Testnet Explorer | https://explorer.nervos.org/aggron |
| Fiber Network Dashboard | https://dashboard.fiber.channel/nodes |
Network Topology
The typical testnet topology for multi-hop payments:
┌───────┐ ┌───────┐ ┌───────┐ ┌───────┐
│ nodeA │ ─────▶ │ node1 │ ─────▶ │ node2 │ ─────▶ │ nodeB │
│:8227 │ │public │ │public │ │:8237 │
└───────┘ └───────┘ └───────┘ └───────┘
sender relay node 1 relay node 2 receiverLocal nodes (nodeA, nodeB) do not need to expose a public address — they connect through the public relay nodes.
Channel Capacity
When opening a channel, each side must reserve 99 CKB (98 CKB for commitment lock + 1 CKB for shutdown transaction fee). This reserved amount is not available for off-chain payments.
Example: If you fund 499 CKB and the public node contributes 250 CKB:
- Your available balance: 499 - 99 = 400 CKB
- Public node available: 250 - 99 = 151 CKB
Node Downloads
Download the latest Fiber Node binary from the GitHub Releases page.
Getting Help
- GitHub Issues — bug reports and feature requests
- Fiber Documentation — full documentation