Thanks. What would be the ideal number to add? You mentioned 40 which is fine as it isn't working with 4000, I am wondering how this number affects the whole mining activity. I am playing the lottery as well, with my gekkoscience 2pac ASIC miner. Sorry for the lame question I am new.
For a 2Pac, use 90 as the suggested diff.
Ok, thats done set to 90 now. Could you please help me to understand what is this difficulty level, and how do we calculate them?
Thanks.
Your miner takes a bunch of data and creates a hash. Based on the hexadecimal representation of the hash, it gets a difficulty value.
For example, this hash: 00000000839a8e6886ab5951d76f411475428afc90947ee320161bbf18eb6048 - it has 8 leading zeroes. It's difficulty is 1. (This was the second block mined.) Take a modern block like: 00000000000000000000026a36ce6423544d841d51f5b36ffccb63e4a4ce0b12 - 25 leading zeroes, and a difficulty of 29.84 quadrillion. (You can look at the reverse of the block hash and count the zeroes [at the end since you've reversed it] and see how big of a number it is.)
If you find a block with a difficulty over the network difficulty, currently 1.9 trillion, you get a block. However, you'd have no idea your miners were doing anything at all since its unlikely you'd hit that. So the pool has a lower difficulty it'll accept, just to acknowledge it sees work coming from your miner. That's what it says as "Accepted". In the solo pool, that doesn't really matter, since you only get paid when you hit a network block, but other pools will pay you some percentage of a block other people hit based on the number of shares they've accepted.
Pools set the difficulty they'll accept based on their own rules - I believe solo pool can go as low as 1.
Other pools set the starting diff higher, which means you need more hash rate and faster ASICs to participate in that pool.