China's Leading Bitcoin Mining Pool "GuoPool" Experiences 1-Hour Downtime, Miners Receive Zero Earnings

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Incident Overview

On October 20, 2017, Bitcoin China announced that its operated mining pool "GuoPool" experienced approximately one hour of downtime due to issues with a third-party server provider. The company later compensated miners for all lost earnings during the affected period by redistributing the missing shares.

What Is a Bitcoin Mining Pool?

In the Bitcoin network, a new block is generated every 10 minutes, containing 25 bitcoins. Thousands of miners compete to solve the cryptographic puzzle, but only one miner wins the entire block reward—leaving others empty-handed.

To address this volatility, mining pools emerged. Here’s how they work:

Global Mining Pool Landscape

A statistical breakdown of Bitcoin mining pool dominance highlights China’s leading position:

RankCountryHashrate Share
1China81%
2Iceland5%
3Japan3%
4Czech Republic3%
5Georgia2%
6India2%

👉 Explore how mining pools optimize profitability

FAQs About Mining Pool Downtime

1. How does downtime affect miners?

During downtime, miners cannot submit valid shares to the pool, resulting in zero earnings for that period. Pools may compensate users if the outage was caused by internal failures.

2. What causes mining pool outages?

Common reasons include:

3. How can miners mitigate downtime risks?

👉 Learn strategies to maximize mining efficiency

Key Takeaways

Note: Bitcoin China ceased operations in 2017, closing withdrawals by October 30 of that year.


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