> ## Documentation Index
> Fetch the complete documentation index at: https://docs.autheo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Autheo Chain is an EVM-compatible Layer 1 blockchain built on Cosmos SDK with NFT license-gated staking and dual reward streams.

Autheo Chain is an EVM-compatible Layer 1 blockchain derived from Cronos and built on Cosmos SDK v0.53.0. It extends standard staking with a custom NFT license gating system that governs who can operate validators and delegate stake.

## Quick reference

| Parameter                        | Value                    |
| -------------------------------- | ------------------------ |
| Chain ID (Cosmos) — Mainnet      | `autheo_2127-1`          |
| Chain ID (EVM integer) — Mainnet | `2127`                   |
| Chain ID (Cosmos) — Testnet      | `autheo_785-1`           |
| Chain ID (EVM integer) — Testnet | `785`                    |
| Binary                           | `autheod`                |
| Current version                  | `v1.0.8`                 |
| Base denomination                | `aauth`                  |
| Decimals                         | 18 (1 THEO = 10¹⁸ aauth) |
| Address prefix                   | `autheo`                 |
| Validator address prefix         | `autheovaloper`          |
| Key algorithm                    | `eth_secp256k1`          |
| Block time                       | \~5 seconds              |
| Consensus                        | CometBFT v0.38.17        |
| Cosmos SDK                       | v0.53.0                  |

## Key features

**NFT license-gated staking** — Validators require a Sovereign NFT license. Delegators require a Prime or Core license bound to their target validator. Licenses originate as ERC-721 tokens on Arbitrum and are bridged into the chain automatically via an EVM hook.

**Three license tiers** — Each tier grants different staking rights and earns a fixed annual NFT emission reward.

| Tier      | Purpose                             | Annual THEO emission |
| --------- | ----------------------------------- | -------------------- |
| Sovereign | Create and operate a validator      | \~187,969            |
| Prime     | External delegation (higher tier)   | \~18,797             |
| Core      | External delegation (standard tier) | \~1,880              |

**Dual reward streams** — Staking rewards flow from `x/mint` via `x/distribution` automatically. NFT emission rewards accrue per block in `x/emissions` and require a manual claim via `x/licensedistribution`.

**Full EVM compatibility** — Autheo Chain runs a full Ethermint EVM with Ethereum JSON-RPC on ports 8545 (HTTP) and 8546 (WebSocket). MetaMask, ethers.js, Hardhat, and Foundry all work with Mainnet Chain ID `2127`.

**IBC support** — Native interoperability via `ibc-go v10.1.1`.

## Source code

```
https://github.com/autheo-blockchain/autheo-chain-core
```

## Getting started

**If you are a validator operator:**

1. Review [Prerequisites](/nodes/node-setup/node-setup)
2. [Install the binary](/nodes/node-setup/installation)
3. Configure [key management](/developers/guides/key-management)
4. Complete [NFT license setup](/nodes/node-setup/license-setup)
5. Follow the [production deployment](/nodes/node-setup/configuration) guide
6. [Create your validator](/nodes/validator-lifecycle/register-validator)

**If you are a developer:**

1. Start with [System architecture](/nodes/architecture/system-architecture)
2. Review [EVM integration](/nodes/architecture/evm-integration)
3. See the [Developer overview](/developers/overview)