hashrate shifting problem and easy mining problem.

Bch produced 60~80 blocks with block time period 1~2 minute.

Bch hashrate is small and DAA difficulty changing is smooth. So this is possible.

DAA use 144 block for calculating difficulty. So it is possible mining 72 blocks without huge difficulty rising. Some miner use this condition. So need to limit 72 block easy mining to 5~10 block easy mining.

To solve this, add method with 10 and 5 block calculation in 144 block DAA .

for example

if last 10 block time period sum < 10*10/2 minutes, decrease target by 1/2 multiple relative to last 10 block average target.

if last 10 block time period sum < 10*10/4 minutes, decrease target by 1/3 multiple relative to last 10 block average target.

if last 5 block time period sum < 5*10/2 minutes, decrease target by 1/2 multiple relative to last 5 block average target.

submitted by /u/bluejaytodd
[link] [comments]

source https://www.reddit.com/r/btc/comments/g0y6yy/hashrate_shifting_problem_and_easy_mining_problem/