Ethereum Knowledge Base: Development Networks and Chain IDs

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Overview of Ethereum Networks

Similar to traditional product environments, Ethereum as a decentralized platform operates across multiple networks. Ethereum has undergone significant changes, including a hard fork and numerous version updates, each introducing new development and test environments. These networks are distinguished by unique ChainIDs and Network IDs.

Below is a comprehensive list of Ethereum ecosystem networks with their respective chain details:

Chain IDNetwork NameAbbreviationChainNetworkNetwork ID
1Ethereum MainnetethETHmainnet1
3Ropsten TestnetropETHropsten3
4Rinkeby TestnetrinETHrinkeby4
5Görli TestnetgorETHgoerli5
42Kovan TestnetkovETHkovan42
61Ethereum ClassicetcETCmainnet1
100xDAI ChainxdaiXDAImainnet1
1313114Ether-1ethoETHOmainnet1313114

👉 Explore more networks

Network Descriptions

Active Test Networks

Deprecated Networks

👉 Compare testnet features

Key Considerations for Developers

  1. ChainID vs. Network ID: While often identical, these serve different purposes—ChainID prevents replay attacks, whereas Network ID identifies the chain.
  2. Consensus Mechanisms: Choose networks aligning with your project's needs (PoW for decentralization, PoA for speed).
  3. Tooling Support: Verify client compatibility (e.g., Geth for Rinkeby, Parity for Kovan).

FAQ Section

Q: Which testnet is closest to Ethereum Mainnet?
A: Ropsten, as it uses PoW like Mainnet.

Q: Why use PoA networks like Kovan?
A: Faster block times and predictable gas costs, ideal for rapid iteration.

Q: How do I select the right ChainID?
A: Match the ID to your target network—consult the table above for reference.

Q: Are deprecated networks still accessible?
A: No, transactions on Olympic/Morden are no longer processed.


This guide provides essential insights for navigating Ethereum's multi-network ecosystem. For real-time network status and tools, visit OKX.


**Optimizations Applied**:
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