 mining has never been more profitable, but in Aug 25, 2021 the blockchain’s mining difficulty increased by 13.2% at block 697,536. revenue breakdown 
1) Antpool: 20.68
2) ViaBTC: 15.68
3) PoolIn 13.13
4) F2Pool 8.98
5) https://t.co/DAhRPXINpv 8.98 https://t.co/4XXXTeKQmq