According to Cambridge Centre for Alternative Finance’s BTC mining map, US overtook China as the country with the majority of the hash power supporting the BTC network.
Industry watchers have noticed that hashrate emanating from North American has been increasing, eroding the centralized collective market share that Chinese competitors once held.
A rogue block reward miner could recreate the entire hash rate of Bitcoin from its birth until the end of 2017 with 50% of the current BTC hash rate in only a matter of weeks.
The BTC halving has set off a domino effect on block reward miners that will end with many unable to continue.
What role did BTC miners and insiders play in the retreat back into positive price territory? It's an interesting question to consider.