Network Magic Extension for CIP-0030

[nathanbogale]

Overview

We need a standardized way for dApps to identify specific Cardano test networks they're connected to. While CIP-0030's getNetworkId() can distinguish between mainnet and testnet, it cannot differentiate between various test networks (preview, preprod, etc.).

Current Problem

• getNetworkId() only returns 0 (testnet) or 1 (mainnet)
• dApps cannot programmatically determine which specific test network they're connected to
• Makes automated testing and network-specific configurations more difficult
• Forces developers to use workarounds or manual network selection

Proposed Solution

Add a new CIP that extends CIP-0030 with a getNetworkMagic() function that returns the network's magic number:

• Mainnet: 764824073
• Preview Testnet: 2
• Preprod Testnet: 1
• Custom Testnet: (other values)

Benefits

1. Improved development workflow
2. Better automated testing capabilities
3. More precise network identification
4. Maintains backwards compatibility
5. Simple implementation for wallet providers

Related Links

• CIP-0030: https://github.com/cardano-foundation/CIPs/tree/master/CIP-0030
• Draft PR: CIP-0142? | Web-Wallet Bridge - Network Determination #960
  CIP-0142? | Web-Wallet Bridge - Network Determination #960