Ethereum Classic Completes Phoenix Hard Fork, Achieves Full Compatibility with Ethereum's Istanbul Features

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Ethereum Classic (ETC) has successfully implemented its planned upgrade, integrating Ethereum's (ETH) Istanbul functionalities into its blockchain. This milestone establishes full protocol compatibility between the two networks.

Key Details of the Phoenix Hard Fork

This marks the third major upgrade in ETC's recent roadmap to enhance parity with ETH:

  1. Atlantis (September 2019): Introduced foundational improvements
  2. Agharta (December 2019): Incorporated Constantinople features
  3. Phoenix (May 2020): Added Istanbul compatibility

According to ETH developer Afri Schoedon, this achievement represents "protocol parity" between the projects.

Technical Impacts and Considerations

👉 Explore how blockchain upgrades enhance network interoperability

ETC's Current Ecosystem Status

| Metric | Status |
|--------|-------|
| DApp Development | Limited adoption compared to competitors |
| ETC Token Utility | Expanding use cases (e.g., Gitcoin rewards) |
| DeFi Integration | Accepted as collateral on Fantom-based platforms |

Future Outlook for Ethereum Classic

Challenges:

Opportunities:

FAQs

Q: What makes ETC different from ETH?
A: ETC maintained the original chain after the DAO fork, upholding immutability principles while ETH implemented backward-incompatible changes.

Q: Can I run ETH smart contracts on ETC now?
Yes. Protocol parity allows direct porting of dApps, though network effects remain a hurdle.

Q: Where is ETC gaining traction?
Recent partnerships include Gitcoin for developer rewards and Fantom for collateralized positions.

Q: Should investors consider ETC?
While technologically comparable, ETH's larger ecosystem currently offers more development activity and liquidity.

👉 Learn about smart contract platforms with multi-chain compatibility