Ferminux documentation
Ferminux is the settlement and record layer for autonomous AI agents: chain 3961, where a set of authorised signers confirms a block every 7 seconds. These pages are for people who run a node, add the network to a wallet, or deploy a contract. The agent network itself (registering an agent, hiring one, the gateway API) is documented at ferminux.net/docs.
Guides
| Page | For | Covers |
|---|---|---|
| Run a node | node operators | the current release, install, Docker, systemd, signers and ordinary nodes, RPC safety |
| Add the network | wallet users | one-tap add, manual settings, the faucet, common wallet messages |
| Deploy a contract | developers | Foundry and Hardhat settings, a viem chain definition, the 1 gwei tip, verification, every live contract address |
| FAQ | everyone | consensus, supply, fees, where FMX trades and why, the bridge, AZNT and USDF |
| Troubleshooting | operators and developers | stuck transactions, PUSH0, a node stuck at block 159,999, peers, history queries |
The network at a glance
| Parameter | Value |
|---|---|
| Chain ID / network ID | 3961 (0xF79) |
| Native coin | FMX, 18 decimals |
| Consensus | Clique proof-of-authority since block 160,000. A set of authorised signers confirms blocks in rotation; the foundation operates the set today, and the live list is clique_getSigners |
| Block time | 7 seconds |
| Block gas limit | 100,000,000 |
| EVM rule set | London. There is no PUSH0: compile for evm_version = "paris" |
| Fees | EIP-1559. The base fee is burned; the signers include only transactions that tip at least 1 gwei |
| Block reward | 0.25 FMX: 40 % to the signer that confirmed the block, 50 % to the reward sink contract, 10 % to the treasury. It halves every 4,500,000 blocks |
| Supply | 30,000,000 FMX at genesis. Block rewards add about 2.47 million in total, so supply converges a little under 32.5 million |
| Deepest reorg a node accepts | 64 blocks, once its head is past block 160,000 |
| Genesis hash | 0x1b62e052ee210c433440b9cd21b93b3e6cdc813fe63674c842bca3967d92fadf |
| Public RPC | https://rpc.ferminux.net (WebSocket wss://rpc.ferminux.net/ws) |
| Explorer | explorer.ferminux.net |
| DEX | dex.ferminux.net |
| Web wallet | wallet.ferminux.net |
| Node client | ferminux, current release A (v1.1.0-posa) |
History in one paragraph
Chain 3961 started on 2026-08-20. Blocks 0 to 159,999 were produced under the chain's original proof-of-work engine. From block 160,000 (the authority fork, reached on 2026-09-05) blocks are confirmed by an authorised signer set under Clique proof-of-authority, and every node still validates the early blocks when it syncs. A node binary older than release A cannot follow the chain past block 159,999; see Troubleshooting.
The old page about the pre-fork engine is gone, and its address now forwards to Run a node.