Poolin, the Bitcoin mining pool that was once the biggest in the world by hashrate, filed for Chapter 11 bankruptcy protection this week. The company submitted the petition to a federal court, listing assets and liabilities in a range that signals a full restructuring rather than a liquidation. It's a sharp fall for a firm that, not long ago, sat atop the mining industry.
The filing
The bankruptcy case was filed under Chapter 11 of the U.S. Bankruptcy Code. That means Poolin intends to reorganize its debts and operations while staying in business, rather than shutting down immediately. The company's statement, if it released one, wasn't immediately available. Court documents will eventually detail the exact debts and creditor claims, but the filing alone confirms that the financial pressure became too much.
A steep decline
Poolin was the dominant mining pool for years, processing a larger share of Bitcoin transactions than any competitor. But that lead evaporated. Hashrate is a fickle metric — pools rise and fall based on fee structures, payout models, and the health of the miners they serve. Poolin's slide from the top spot to bankruptcy court is about as stark as it gets. The mining business has been brutal lately: margins tightened, energy costs stayed high, and the post-halving reward squeeze hit everyone. For a company that relied on scale, losing the hashrate lead hurt.
The Chapter 11 process
Under Chapter 11, Poolin will now negotiate with creditors to restructure its debts. The company can keep operating during the process, but a judge will oversee major decisions. The goal is a plan — usually one that reduces debt, sells some assets, or brings in new capital. If no plan gets approved, the case could convert to a Chapter 7 liquidation. That outcome would be worse for creditors and for the firm's remaining customers. For now, the miners who pointed their rigs at Poolin will have to watch the proceedings and decide whether to stay or jump to another pool.
What's not yet known
The filing doesn't specify exactly why Poolin ran out of road. Was it a bad bet on hardware? Unpaid customer balances? A liquidity crunch that spread from another part of the business? Those details will emerge in the coming weeks as the bankruptcy court unseals records and creditors start filing claims. One thing is certain: the once-king of mining pools now has to convince a judge — and the market — that it has a viable path forward. That's a hard sell when you've already lost the top spot.
