Poolin was bitcoin's biggest mining pool and now it's filing for bankruptcy
CoinDesk·

60-second summary
Poolin, once the largest Bitcoin mining pool, is filing for bankruptcy with over $173 million in debt, a significant decline from its peak control of nearly a fifth of Bitcoin's global hashrate.
The Singapore-based company once controlled nearly a fifth of Bitcoin's global hashrate. Now it owes $173 million and is selling off what's left.