The huge growth in Bitcoin has almost everything to do with the Chinese’s recent interest in the digital currency. According to Bitnodes, it looks like China has overtaken Germany in having the second most Bitcoin nodes in the world, with just over 12,000 being the estimate.
China trails behind the United States, which has close to 33,000 nodes at this time — so they’ve still got some catching up to do.
Bitcoin nodes are critical parts of the Bitcoin network. These nodes are typically run by ordinary people or mining groups and are responsible for updating the ledger (block chain) with the latest transactions. Their reward for doing so is discovering new Bitcoins.