Supported Chains¶

Switchboard supports 50+ blockchain networks across multiple ecosystems, enabling truly universal cross-chain deployment.

Network Categories¶

EVM Networks¶

Fully compatible Ethereum Virtual Machine networks.

Chain	Chain ID	Network Type	Status
Ethereum	1	Layer 1	Fully Supported
Polygon	137	Layer 2/Sidechain	Fully Supported
Arbitrum	42161	Layer 2 Rollup	Fully Supported
Optimism	10	Layer 2 Rollup	Fully Supported
BNB Smart Chain	56	Layer 1	Fully Supported
Avalanche C-Chain	43114	Layer 1	Fully Supported
Fantom	250	Layer 1	Fully Supported

Layer 2 Solutions¶

Ethereum scaling solutions with enhanced throughput.

Chain	Chain ID	Base Layer	Status
Base	8453	Ethereum	Fully Supported
zkSync Era	324	Ethereum	Fully Supported
Polygon zkEVM	1101	Ethereum	Fully Supported
Linea	59144	Ethereum	Fully Supported
Mantle	5000	Ethereum	Fully Supported
Scroll	534352	Ethereum	Fully Supported

Alternative Layer 1 Blockchains¶

Non-EVM networks with native integration.

Chain	Chain ID*	Consensus	Status
NEAR Protocol	99990001	Nightshade	Fully Supported
Cosmos Hub	99990002	Tendermint	Fully Supported
Terra	99990003	Tendermint	Fully Supported
Sui	99990004	Narwhal/Bullshark	Fully Supported
Aptos	99990005	AptosBFT	Fully Supported

*Custom chain IDs used for non-EVM chains

Emerging Networks¶

Next-generation blockchain platforms.

Chain	Chain ID	Focus Area	Status
Celestia	99990006	Data Availability	Fully Supported
Starknet	99990007	zk-STARK Rollup	Fully Supported
Flow	99990008	NFT/Gaming	Fully Supported
HECO	128	DeFi	Fully Supported
Kroma	255	Layer 2	Fully Supported

Additional Networks¶

Extended ecosystem support.

Chain	Chain ID	Ecosystem	Status
Celo	42220	Mobile-first	Fully Supported
Gnosis Chain	100	Community-driven	Fully Supported
Moonbeam	1284	Polkadot Parachain	Fully Supported
Harmony	1666600000	Sharding	Fully Supported
Cronos	25	Crypto.com	Fully Supported
Aurora	1313161554	NEAR Ecosystem	Fully Supported
Evmos	9001	Cosmos EVM	Fully Supported
Kava	2222	Cosmos DeFi	Fully Supported
Klaytn	8217	Korean Platform	Fully Supported
Oasis Emerald	42262	Privacy	Fully Supported
Telos	40	High Performance	Fully Supported
Fuse	122	Payments	Fully Supported
Moonriver	1285	Kusama Parachain	Fully Supported
Milkomeda C1	2001	Cardano Sidechain	Fully Supported
Metis Andromeda	1088	Layer 2	Fully Supported
Boba Network	288	Layer 2	Fully Supported

Testnet Networks¶

Development and testing networks.

Chain	Chain ID	Purpose	Status
Goerli	5	Ethereum Testnet	Fully Supported
Sepolia	11155111	Ethereum Testnet	Fully Supported
Mumbai	80001	Polygon Testnet	Fully Supported
Fuji	43113	Avalanche Testnet	Fully Supported

Usage Examples¶

Initialize with Multiple Networks¶

switchboard init --chains ethereum,polygon,bsc,avalanche

switchboard init --chains base,arbitrum,optimism,zksync

switchboard init --chains near,cosmos,sui,aptos

switchboard init --chains ethereum,polygon,near,sui

Deploy Across Networks¶

# Deploy to major EVM chains
switchboard deploy --chains ethereum,polygon,arbitrum,optimism,bsc,avalanche

# Deploy to Layer 2 ecosystem
switchboard deploy --chains base,zksync,polygonzkevm,linea,mantle,scroll

# Deploy to alternative platforms
switchboard deploy --chains near,cosmos,sui,aptos

Network Characteristics¶

Gas and Fee Structures¶

Block Times and Finality¶

Configuration¶

Mainnet RPC URLs¶

# Major EVM Chains
ETHEREUM_RPC_URL=https://eth-mainnet.g.alchemy.com/v2/YOUR_KEY
POLYGON_RPC_URL=https://polygon-mainnet.g.alchemy.com/v2/YOUR_KEY
ARBITRUM_RPC_URL=https://arb-mainnet.g.alchemy.com/v2/YOUR_KEY
BSC_RPC_URL=https://bsc-dataseed.binance.org/

# Layer 2 Solutions
BASE_RPC_URL=https://base-mainnet.g.alchemy.com/v2/YOUR_KEY
ZKSYNC_RPC_URL=https://mainnet.era.zksync.io
OPTIMISM_RPC_URL=https://opt-mainnet.g.alchemy.com/v2/YOUR_KEY

# Alternative Layer 1s
NEAR_RPC_URL=https://rpc.mainnet.near.org
SUI_RPC_URL=https://fullnode.mainnet.sui.io:443
APTOS_RPC_URL=https://fullnode.mainnet.aptoslabs.com/v1

Testnet RPC URLs¶

SEPOLIA_RPC_URL=https://eth-sepolia.g.alchemy.com/v2/YOUR_KEY
MUMBAI_RPC_URL=https://polygon-mumbai.g.alchemy.com/v2/YOUR_KEY
FUJI_RPC_URL=https://api.avax-test.network/ext/bc/C/rpc

EVM Compatibility¶

Full EVM Compatibility¶

These networks are 100% EVM compatible:

• Ethereum
• Polygon
• Arbitrum
• Optimism
• BSC
• Avalanche
• Fantom

EVM-Compatible¶

These networks support EVM with minor differences:

• Most Layer 2s and sidechains
• zkSync Era (some opcodes differ)
• Polygon zkEVM

Custom VM¶

These require chain-specific contract development:

• NEAR (WebAssembly)
• Cosmos (CosmWasm)
• Sui (Move)
• Aptos (Move)

Best Practices¶

Network Selection Strategy¶

1. Start with Core Networks - Ethereum, Polygon, Arbitrum, BSC
2. Add Layer 2s - Base, Optimism, zkSync for lower fees
3. Consider Alternative L1s - NEAR, Sui, Aptos for specific use cases
4. Include Emerging Networks - For early ecosystem advantages

Multi-Chain Deployment Tips¶

1. Test on Testnets First - Always validate on test networks
2. Stagger Deployments - Deploy incrementally to manage risk
3. Monitor Gas Prices - Deploy during optimal fee periods
4. Use CREATE2 - Maintain consistent addresses across chains

RPC Provider Recommendations¶

Network Status¶

Check the current status of all supported networks:

# Check all networks
switchboard status --chains

# Check specific network
switchboard health --network ethereum

# Validate configuration
switchboard validate --all

Adding New Networks¶

Switchboard is designed to be extensible. To request support for a new network:

1. Open an issue on GitHub
2. Provide network details (RPC, chain ID, etc.)
3. The team will evaluate and add support

Next Steps¶

• Configuration Guide - Network configuration details
• Deployment Guide - How to deploy across chains
• Examples - Multi-chain deployment examples