I'm not sure if -xpm option is working or not.
I have connected three computers to my server using -xpm option.
jhprimeminer -o http://server.address:9912 -u username -p password -m 61 -target 9 -bttarget 9 -xpm coinaddress
Total pps is around 79000 all together. I ran for a week, but never found a block.
Also, when I used to pool mine, I'd see something like it found some chains once in a while, but I never seen that message since soloing.
Can someone look into this?

Ypool's server is down due to hardware failure. ETA 12 hours from now for repair.

That is a bad idea because after you send money from one of the wallets, the two wallets will no longer be in sync and will show different amounts. If you try to fix it without understanding what happened, you could lose some bitcoins.

No, the target is not exactly a random number. The target is defined in accordance with the rate of blocks being accepted by the network each 10 minutes. So there is a defined formula to generate the target.

Let's examine a real case, the first block generated by Satoshi Nakamoto when he started the Bitcoin protocol. The Internet page blockexplorer.com provide a history of the blockchain in CSV format:

http://blockexplorer.com/q/nethash


There is a field "time" followed by a field "target". The number in the field "time", 1231693144, is given in Unix format. So let's convert this number to the traditional Gregorian calendar format:

http://www.wolframalpha.com/input/?i=1231693144+unix+time

The first block of the Bitcoin network was accepted on Sunday, January 11, 2009, 4:59:04 pm UTC. The target to accept the block was:

26959535291011309493156476344723991336010898738574164086137773096960

This is a number with only 68 decimal digits. Now let's compare with the last computed target:

68962778243821519216393853205209897734463141354237780295680

It is a 59 decimal digit number. In other words, the last target is a number lower than the first target. That means that as lower the target becomes, greater is the difficulty to find a random hash which number is equal or lower than the target.

Now, to understand how the target is defined, let's examine the first block was accepted once the difficulty increase above 1:


So, on Wednesday, December 30, 2009, 6:11:04 am UTC, the first block with difficulty above 1 was accepted by the network. At that time, difficulty was 1.18 and the target was:

22791060871177364286867400663010583169263383106957897897309909286912


Correct, all clients distribute to each other the same target once it is recalculated.


Correct, the "miners" use their SHA-256 hash generators device to find the current target.

I'd just add a "Wait for 5 minutes" between 2 and 3.

Alternatively, you can generate all (x) addresses from the same wallet, export the (x) p-keys, import each of them in a new fresh wallet, and ultimately delete the first generating wallet.

0. n=0
1. n=n+1
2. Run bitcoin-qt
3. Generate an address
4. Quit bitcoin-qt
5. Rename wallet.dat to wallet_n.dat
6. Goto 1.

Yes if you generate them seperately

With your speed 32KH/s you wont find many shares. If stratum difficulty is 1 then you will find share every 1 and half day

And Slush reward diminishes rapidly after few mins - it is best to use countinuous miner sending shares often.