# Contract

- [OrbitHub](/contract/orbithub.md)
- [Bridge](/contract/bridge.md)
- [Ethereum](/contract/bridge/ethereum.md)
- [BNB Chain](/contract/bridge/ethereum-1.md)
- [Klaytn](/contract/bridge/klaytn.md)
- [Heco](/contract/bridge/klaytn-1.md)
- [Polygon](/contract/bridge/klaytn-2.md)
- [Celo](/contract/bridge/klaytn-3.md)
- [ICON](/contract/bridge/icon.md)
- [XRP](/contract/bridge/xrp.md)
- [Vault (Layer 1)](/contract/vault.md): We explain how the following networks act as Vaults in the Orbit Bridge system.
- [Ethereum](/contract/vault/ethereum.md)
- [BNB Chain](/contract/vault/ethereum-1.md)
- [Klaytn](/contract/vault/klaytn.md)
- [Heco](/contract/vault/klaytn-1.md)
- [Polygon](/contract/vault/klaytn-2.md)
- [Celo](/contract/vault/klaytn-3.md)
- [XRP](/contract/vault/xrp.md)
- [Minter (Layer 2)](/contract/minter.md): We explain how the following networks act as Minters in the Orbit Bridge ecosystem.
- [Ethereum](/contract/minter/ethereum.md)
- [Avalanche](/contract/minter/klaytn.md)
- [BNB Chain](/contract/minter/klaytn-1.md)
- [Klaytn](/contract/minter/klaytn-2.md)
- [Celo](/contract/minter/klaytn-3.md)
- [Fantom](/contract/minter/klaytn-4.md)
- [Harmony](/contract/minter/klaytn-5.md)
- [Polygon](/contract/minter/klaytn-6.md)
- [Moonriver](/contract/minter/klaytn-7.md)
- [OKExChain](/contract/minter/klaytn-8.md)
- [Orbit](/contract/minter/klaytn-9.md)
- [Gnosis](/contract/minter/klaytn-10.md)
- [ICON](/contract/minter/icon.md): SCORE SmartContract in ICON
- [XRP](/contract/minter/xrp.md)
- [BridgeReceiver](/contract/bridgereceiver.md): BridgeReceiver for evm based chain ( ETH, KLAYTN, etc.. )
- [Governance](/contract/governance.md)
- [Glossary](/contract/glossary.md)