Bridge Contracts

This page provides information about the smart contracts that enable cross-chain bridging between Neutron and other networks.

Mainnet (neutron-1)

Testnet (pion-1)

Lido Satellite Contract

The Lido Satellite contract enables bridging of Lido's staked ETH (stETH) to Neutron. It provides a TokenFactory representation of the wrapped staked ETH (wstETH) which can be used throughout the Neutron ecosystem.

Supported Tokens

How the Bridge Works

1. Axelar Integration: The Neutron bridge uses Axelar's General Message Passing (GMP) to facilitate cross-chain communication
2. Minting and Burning: When wstETH is bridged to Neutron, the corresponding tokens are locked on Ethereum, and native tokens are minted on Neutron
3. Token Standards: TokenFactory standards on Neutron ensure that the bridged tokens behave like native Cosmos assets
4. Fee Mechanics: The bridge charges a small fee for transfers to cover operational costs

Using the Bridge

To interact with the bridge, you can use the Neutron Bridge UI or interact directly with the contracts.

Example Bridge Queries

# Query bridge token info
neutrond query wasm contract-state smart neutron1ug740qrkquxzrk2hh29qrlx3sktkfml3je7juusc2te7xmvsscns0n2wry '{"token_info":{}}'

# Check bridge limits
neutrond query wasm contract-state smart neutron1ug740qrkquxzrk2hh29qrlx3sktkfml3je7juusc2te7xmvsscns0n2wry '{"bridge_limits":{}}'

Bridge Security

The bridge security model includes:

1. Axelar Validators: The bridge relies on Axelar's validator network for secure message passing
2. Multi-Signature Controls: Administrative actions require approval from multiple parties
3. Rate Limiting: The bridge includes rate limits to prevent catastrophic failures
4. Upgradability: The bridge can be upgraded to patch security vulnerabilities

Future Bridge Developments

The Neutron team is working on expanding bridge capabilities to include:

1. More assets and token standards
2. Additional source chains beyond Ethereum
3. Improved efficiency and reduced fees
4. Enhanced user interfaces for easier bridging

Bridge Monitoring

You can monitor bridge activities using the following resources:

• Neutron Explorer
• Axelar Scan
• Bridge Status Dashboard