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Chain Support

Build on any supported blockchain with Duo's secure multi-party computation.

Duo supports a comprehensive range of blockchains through our ECDSA and EdDSA implementations. Our threshold signature schemes enable secure key management and transaction signing across multiple networks.

Chain Support Overview​

ECDSA Supported Chains

NETWORK
CHAIN ID
TYPE
SUPPORTED
Ethereum
1
Mainnet
✓
Ethereum Sepolia
11155111
Testnet
✓
Ethereum Holesky
17000
Testnet
✓
Bitcoin
—
Mainnet
✓
Bitcoin Testnet
—
Testnet
✓
Arbitrum
42161
L2
✓
Arbitrum Sepolia
421614
L2 Testnet
✓
Optimism
10
L2
✓
Optimism Sepolia
11155420
L2 Testnet
✓
Polygon
137
L2
✓
Polygon Amoy
80002
L2 Testnet
✓
Base
8453
L2
✓
Base Sepolia
84532
L2 Testnet
✓
Avalanche C-Chain
43114
L1
✓
Avalanche Fuji
43113
Testnet
✓
BSC
56
L1
✓
BSC Testnet
97
Testnet
✓
Celo
42220
L1
✓
Celo Alfajores
44787
Testnet
✓
Linea
59144
L2
✓
Linea Testnet
59140
L2 Testnet
✓
Mantle
5000
L2
✓
Mantle Testnet
5001
L2 Testnet
✓
Scroll
534352
L2
✓
Scroll Sepolia
534351
L2 Testnet
✓
ZkSync Era
324
L2
✓
ZkSync Era Testnet
280
L2 Testnet
✓
Fantom
250
L1
✓
Fantom Testnet
4002
Testnet
✓
Gnosis Chain
100
L1
✓
Gnosis Chiado
10200
Testnet
✓

EdDSA Supported Chains

NETWORK
NETWORK ID
TYPE
SUPPORTED
Solana
mainnet-beta
Mainnet
✓
Solana Devnet
devnet
Testnet
✓
Solana Testnet
testnet
Testnet
✓
Algorand
mainnet
Mainnet
✓
Algorand Testnet
testnet
Testnet
✓
Algorand Betanet
betanet
Testnet
✓
Stellar
public
Mainnet
✓
Stellar Testnet
testnet
Testnet
✓
Cardano
mainnet
Mainnet
✓
Cardano Testnet
testnet
Testnet
✓

Network Identification​

ECDSA Chains​

ECDSA-compatible chains (primarily EVM chains) use Chain IDs for network identification:

  • Chain ID: Numeric identifier used by EVM-compatible networks
  • Examples: Ethereum (1), Arbitrum (42161), Polygon (137)

EdDSA Chains​

EdDSA-compatible chains use Network IDs instead of Chain IDs:

  • Network ID: String-based identifier used by non-EVM networks
  • Examples: Solana (mainnet-beta), Algorand (mainnet), Stellar (public)

Multi-Chain Support​

Duo's architecture enables seamless multi-chain operations:

  • Cross-chain compatibility: Use the same key management system across different networks
  • Unified API: Consistent interface for all supported chains
  • Secure key derivation: BIP32/BIP44 compliant key derivation paths
  • Hardware security: Integration with secure enclaves and HSMs

Adding New Chains​

To add support for additional chains:

  1. EVM Chains: Simply provide the chain ID and RPC endpoint
  2. Non-EVM Chains: Contact our team for custom integration
  3. Testnet Support: Most mainnet chains have corresponding testnet support

For custom chain integrations or questions about specific networks, contact us.

Security Considerations​

  • Threshold Security: All chains benefit from Duo's threshold signature schemes
  • Key Isolation: Keys are never stored in a single location
  • Audit Compliance: All implementations follow industry security standards
  • Regular Updates: Chain support is continuously updated and maintained

Getting Started​

Ready to build on any of these chains? Check out our:

Need help with a specific chain? Contact us for personalized support.