> For the complete documentation index, see [llms.txt](https://docs.armchain.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.armchain.org/readme.md).

# Armchain Developer Docs

## Welcome to Armchain

**Post-Quantum Secure · EVM-Compatible · Instant Finality**

Armchain is a Layer 1 blockchain built for the post-quantum era. If you're familiar with Ethereum development, you'll feel right at home, deploy the same Solidity contracts you already know, but with quantum-resistant security and instant transaction finality.

Under the hood, Armchain replaces traditional ECDSA signatures with **ML-DSA44** (a NIST-standardized post-quantum algorithm) and uses **Lachesis aBFT** consensus so transactions are final the moment they're confirmed. No waiting, no rollbacks.

[Get Started](/get-started/overview.md) · [Quickstart](/get-started/quickstart.md) · [SDK Reference](/developers/overview-1.md) · [API Docs](/api-reference/json-rpc.md)

***

### Why Armchain?

* **Quantum-resistant from day one**: All signatures use ML-DSA44 (NIST FIPS 204), protecting against future quantum attacks
* **Native Account Abstraction**: Smart contract accounts are first-class citizens, with support for Passkey (biometric), SLH-DSA, MPC, and custom validation schemes
* **Instant finality**: Transactions are final the moment they're confirmed. No waiting for block confirmations
* **EVM compatible**: Write and deploy Solidity smart contracts just like on Ethereum (London fork)
* **High throughput**: DAG-based consensus lets all validators work in parallel, not one at a time
* **ARM token**: Native token for gas fees, staking, and governance

### Network at a Glance

| Parameter               | Value                             |
| ----------------------- | --------------------------------- |
| **Chain ID**            | `55`                              |
| **Native Token**        | ARM                               |
| **RPC URL**             | `https://www.armchain.org/devnet` |
| **Finality**            | Instant (aBFT)                    |
| **EVM Version**         | London                            |
| **Signature Algorithm** | ML-DSA44                          |

> **Quick test**: Verify connectivity with a single curl command:
>
> ```bash
> curl -s -X POST https://www.armchain.org/devnet \
>   -H "Content-Type: application/json" \
>   -d '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'
> ```

***

### Documentation

#### Getting Started

| Guide                                                          | Description                           |
| -------------------------------------------------------------- | ------------------------------------- |
| [Overview](/get-started/overview.md)                           | What Armchain is and why it matters   |
| [Quickstart](/get-started/quickstart.md)                       | Deploy your first contract in minutes |
| [Network Configuration](/get-started/network-configuration.md) | Connect your tools to Armchain        |

#### Developers

| Guide                                            | Description                                    |
| ------------------------------------------------ | ---------------------------------------------- |
| [Smart Contracts](/developers/overview.md)       | Writing and deploying Solidity contracts       |
| [Armchain Ethers SDK](/developers/overview-1.md) | Drop-in ethers.js replacement with PQC signing |
| [Wallet Integration](/developers/overview-2.md)  | Connect your dApp to a wallet                  |

#### Architecture

| Guide                                                           | Description                                     |
| --------------------------------------------------------------- | ----------------------------------------------- |
| [Consensus (Lachesis aBFT)](/architecture/consensus.md)         | How Armchain achieves instant finality          |
| [DAG Structure](/architecture/dag.md)                           | The directed acyclic graph powering the network |
| [EVM Integration](/architecture/evm.md)                         | How the EVM runs on Armchain                    |
| [Transaction Lifecycle](/architecture/transaction-lifecycle.md) | From submission to finality                     |

#### Post-Quantum Cryptography

| Guide                                          | Description                                 |
| ---------------------------------------------- | ------------------------------------------- |
| [PQC Overview](/pqc/overview.md)               | Why Armchain uses post-quantum cryptography |
| [ML-DSA44 Deep Dive](/pqc/mldsa44.md)          | Algorithm parameters and performance        |
| [Transaction Types](/pqc/transaction-types.md) | Type 3 PQC transaction format               |

#### Account Abstraction

| Guide                                                            | Description                                               |
| ---------------------------------------------------------------- | --------------------------------------------------------- |
| [Overview](/account-abstraction/overview.md)                     | How native AA works on Armchain                           |
| [Validation Schemes](/account-abstraction/validation-schemes.md) | MLDSA, Passkey, SLH-DSA, MPC, and custom schemes          |
| [Paymaster](/account-abstraction/paymaster.md)                   | Gas sponsorship, Foundation Paymaster, and staking policy |
| [System Contracts](/account-abstraction/system-contracts.md)     | Genesis contracts, Yul implementation, developer notes    |

#### Node Operators

| Guide                                                       | Description                         |
| ----------------------------------------------------------- | ----------------------------------- |
| [Node Types](/node-operators/node-types.md)                 | Choose the right node configuration |
| [Fakenet](/node-operators/fakenet.md)                       | Local development network           |
| [Configuration Reference](/node-operators/configuration.md) | All node configuration options      |

#### Tools & Infrastructure

| Guide                                | Description                                |
| ------------------------------------ | ------------------------------------------ |
| [Block Explorer](/tools/explorer.md) | Browse blocks, transactions, and contracts |
| [Armchain Wallet](/tools/wallet.md)  | Official browser extension wallet          |
| [Faucet](/tools/faucet.md)           | Get devnet ARM tokens                      |

#### API Reference

| Guide                                           | Description                                     |
| ----------------------------------------------- | ----------------------------------------------- |
| [JSON-RPC API](/api-reference/json-rpc.md)      | Ethereum-compatible JSON-RPC endpoints          |
| [Armchain APIs](/api-reference/armchain-api.md) | DAG, validator, and Armchain-specific endpoints |

#### Resources

| Guide                                      | Description                 |
| ------------------------------------------ | --------------------------- |
| [FAQ](/resources/faq.md)                   | Answers to common questions |
| [Glossary](/resources/glossary.md)         | Key terms and definitions   |
| [Contributing](/resources/contributing.md) | How to contribute           |

***

[**armchain.org**](https://www.armchain.org) · [**Explorer**](https://www.armchain.org/explorer)

*Maintained by the Armchain team · Last updated June 2026*