> ## 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.

# Autheo Bridge

> Overview of the Autheo Bridge: cross-chain token transfers using Hyperlane Warp Routes, supported chains, and system requirements.

The Autheo Bridge is a decentralized application (DApp) built on [Hyperlane Warp Routes](https://docs.hyperlane.xyz) that enables permissionless, cross-chain token transfers between supported blockchains. It is the primary way to move your node license NFT from Arbitrum to the Autheo network, and to transfer THEO tokens between chains.

**Platform URL:** [https://hyper.autheo.com](https://hyper.autheo.com)

<Note>
  The Bridge enforces geographic compliance restrictions. Users in certain jurisdictions may be unable to access the service.
</Note>

## Key capabilities

| Capability                    | Description                                                             |
| ----------------------------- | ----------------------------------------------------------------------- |
| Cross-chain token bridging    | Transfer tokens between any supported pair of blockchains               |
| Multi-protocol wallet support | Connect wallets for EVM, Solana, Cosmos, Starknet, and Radix ecosystems |
| Real-time balance display     | View token balances on both source and destination chains               |
| Transfer history tracking     | Review all past transfers in the application                            |
| Token approval management     | Automatic handling of ERC-20 token approvals                            |
| Fee estimation                | See estimated interchain gas fees before confirming                     |

## Supported chains

| Chain            | Type                 | Native token | Network |
| ---------------- | -------------------- | ------------ | ------- |
| Arbitrum Sepolia | EVM (Arbitrum Nitro) | ETH          | Testnet |
| Autheo Alpha     | EVM                  | THEO         | Testnet |

## System requirements

| Requirement | Details                                                                                                     |
| ----------- | ----------------------------------------------------------------------------------------------------------- |
| Browser     | Chrome, Firefox, Edge, Brave, or any modern browser with wallet extension support                           |
| Wallet      | MetaMask, WalletConnect-compatible wallet, Phantom (Solana), or Keplr (Cosmos)                              |
| Network     | Stable internet connection                                                                                  |
| Funds       | Native tokens on the source chain to pay for gas fees (e.g., ETH on Arbitrum Sepolia, THEO on Autheo Alpha) |

## How the Bridge relates to Autheo

The Bridge uses Hyperlane as the interoperability layer — Autheo's Layer 0 cross-chain messaging protocol. For architectural context, see [Autheo OS model](/start-here/autheo-os-model).

The most common use case is bridging your node license NFT from Arbitrum to your Autheo Chain EVM address. This transfer automatically triggers an on-chain hook that mints a corresponding `LicenseRecord` on the Cosmos side, making your license usable for staking and validation. See the [license setup guide](/nodes/node-setup/license-setup) for the full flow.