{
  "Bitmain": [
      {"name": "AntPool", "from": "", "to": "", "source": "https://www.coindesk.com/company/antpool/"},
      {"name": "BTC.COM", "from": "", "to": "2020-12", "source": "https://www.theblock.co/post/84370/bitmain-bitcoin-spinoff-fight-end"},
      {"name": "Bitdeer", "from": "", "to": "2020-12", "source": "https://www.theblock.co/post/84370/bitmain-bitcoin-spinoff-fight-end"}
  ],
  "Bitdeer": [
      {"name": "BTC.COM", "from": "2020-12", "to": "2021-04", "source": "https://www.theblock.co/post/84370/bitmain-bitcoin-spinoff-fight-end"}
  ],
  "BIT Mining": [
      {"name": "BTC.COM", "from": "2021-04", "to": "", "source": "https://ir.btcm.group/news/pressDetail/316"},
      {"name": "Bitdeer", "from": "2021-04", "to": "", "source": "https://ir.btcm.group/news/pressDetail/316"}
  ],
  "Poolin": [
      {"name": "NovaBlock", "from": "2021-02", "to": "", "source": "https://bitcoinmagazine.com/business/chinese-mining-pool-poolin-acquires-north-american-competitor-novablock"}
  ]
}
