First I think this is solo mining earnings and with this earnings it seems it intelligently avoid the capture of actual network hashrate. At the current 60GH/s, this single address is having at least 4 Billion in 6 days and potential is more than 120m DOGE daily. To earn this 120m daily from about 720 million DOGE daily is 16% of network hashrate.
The peak increase to 90GH/s which is about 15GH/s or it could be scrypt ASIC in stealth operation.
Further discovery found that 60% of a single block income goes to this solo miner. Each mining block reward is 500,000 but this single solo miners manages to get 70% of 357,345.94655711.
This makes all miners real returns from published mining rate of 30% only. This means when you should mine and get 10,000 DOGE a day you will get only 3,000 and 70% goes to stealth ASIC miners. This means there are ASIC scrypt secret mining farm with 70% hidden hashrate not detected by the network?
I do not think there is any DOGE pool with network 70% mining hashrate.
Other interesting findings in 2 hours single address can accumulate 400 million become 6th richest