What Happened in the First 24 Hours After Ethereum's Transition to PoS

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Introduction

Ethereum successfully completed its transition from Proof-of-Work (PoW) to Proof-of-Stake (PoS), marking a historic milestone. Despite initial concerns, the merge proceeded smoothly, with minimal disruptions. Competing forks like ETC and ETHPoW failed to gain significant traction, collectively representing less than 4% of Ethereum’s market cap. Meanwhile, the U.S. SEC raised familiar concerns about PoS securities—hinting at potential regulatory challenges ahead. Below, we break down the key events in the critical first 24 hours post-merge.


Timeline of Key Events

1. The Final PoW Block NFT (14:43 UTC, Sept 15)

2. First PoS Block Goes Live (Block #15537394)

3. Vitalik Buterin’s Comments

4. Mining Shifts to Alternative Chains (15:00 UTC)

5. Market Reactions (15:30 UTC)

6. Exchanges Resume ETH Services (16:00 UTC)

7. Poloniex Backs EthereumFair (21:00 UTC)

8. Miner Exodus (21:40 UTC)

9. ETHW Launch & Mining (22:06 UTC)

10. Price Volatility (23:05 UTC)

11. Next-Day Metrics (08:00 UTC, Sept 16)

| Chain | Hashrate | Price |
|---------|-----------|----------|
| ETC | 270 TH/s | $35.93 |
| ETHW | 59.87 TH/s| $13.20 |
| ETF | 35 TH/s | $17.33 |

12. SEC’s PoS Warning (Wall Street Journal)

13. Post-Merge Node Centralization (09:00 UTC)


Key Takeaways

  1. Technical Success: Merge executed flawlessly.
  2. Market Stability: No major disruptions in DeFi/NFTs.
  3. Regulatory Clouds: SEC’s stance on PoS remains a wildcard.
  4. Alternative Chains: Minor hashrate shifts to ETC/RVN/CFX.

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FAQ

Q: Will Ethereum’s PoS make it more centralized?

A: While staking services (e.g., Lido, Coinbase) dominate, PoW mining pools exhibited comparable centralization.

Q: What happened to ETH miners?

A: Most switched to other coins (ETC/RVN) or shut down—only 20–30% remain active.

Q: How did ETH price react post-merge?

A: Dropped below $1,500 briefly but stabilized as markets adjusted.

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