The Ethereum team has launched Holešky, a groundbreaking testnet designed to revolutionize development and testing workflows. As the first long-standing, merged-from-Genesis public Ethereum testnet, Holešky replaces Goerli for staking, infrastructure, and protocol development, while Sepolia remains the go-to for DApps and smart contract testing.
Key Features of Holešky Testnet
- Purpose: Facilitates protocol upgrades, validator testing, and Distributed Validator Technology (DVT) projects.
- Genesis State: Aligns with the Shanghai/Capella upgrade, mirroring Ethereum’s mainnet conditions.
- Validator Scale: Supports 1.4 million validators at launch, ensuring robust network testing.
- Lifetime: Expected to operate for 3–5 years.
Why Testnets Matter
Testnets like Holešky provide a risk-free environment for developers to:
- Trial protocol upgrades.
- Deploy smart contracts.
- Simulate staking scenarios before mainnet deployment.
The Transition from Goerli to Holešky
Goerli entered long-term support in Q1 2023 and will be phased out by Q4 2023. Holešky’s launch ensures continuity for:
- Node Operators: Public validator participation.
- DVT Projects: Testing decentralized validator clusters.
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The Naming Controversy
Holešky pays homage to Nádraží Holešovice, a historic Prague train station. After community debates, the team opted for "Holešky" over initial proposals like "Holli" to respect local heritage.
Holešky Launch Timeline
| Milestone | Date |
|---|---|
| Genesis Event | September 28, 2023 |
| Validator Signup Close | Mid-September 2023 |
Note: The initial September 15 launch failed due to a Genesis file misconfiguration but was rectified within two weeks.
FAQs
1. What makes Holešky unique?
It’s Ethereum’s first merged-from-Genesis testnet, enabling large-scale validator testing upfront.
2. How does Holešky differ from Sepolia?
Holešky focuses on protocol-level testing, while Sepolia caters to DApp and EVM functionality.
3. Can I join Holešky as a validator?
Yes! Public validators are encouraged to participate. Commit keys via the GitHub tracker.
4. What’s the ETH supply on Holešky?
The testnet launched with 1.6 billion Genesis ETH to ensure ample liquidity.
5. Will Goerli be deprecated immediately?
No—it will phase out gradually, allowing projects to migrate to Holešky.
Current Status
As of September 2023:
- Participation Rate: Over 90% of validators are active.
- Finalization: Achieved by epoch 5 post-relaunch.
- Monitoring: Real-time stats available on Beaconcha.in.
Conclusion
Holešky marks a quantum leap in Ethereum’s testing infrastructure, offering unparalleled scale and longevity. Its successful relaunch underscores the Ethereum community’s agility in troubleshooting and collaboration.
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