Hi. Can anyone kindly let me know if there is an example of where one header has been resolved at the correct target and another nonce could've also been an alternative golden nonce if it was relayed at the same time.

A440D3DA   4E39662E
AD5445DC   C37AF7E1
F81A1C8C   0B838F69
3F689CB1   641FD4C2
74993C22   ADE3297A
1F43862C   2DCF3A1F
218BB7A6   E307ADD3
65C5FA2D   3C17C89A
C032FF56   8F99A60D
2CEEB76E   2CEEB76E
889D1620   9A7796C2
5A16D237   A9FD18B0
DF7ECD4A   7D476430
E6E75F18   A54C05E1
25F169F9   7FDF93E7
578193B7   D6E0FCA7
3DD3251A   1741A816
F017140B   CEFF2BE1
40C78379   F2FCB659
B66098BA   6199033A

This topic is of the back of https://bitcointalk.org/index.php?topic=1620547.msg16363282#msg16363282

I would like to change the difficulty to a specific difficulty, is there a guide anywhere in which I can follow to configure some type of software in order to solo mine to a specific difficulty and display my result (not feedback to everyone, as I am testing something)

Thanks for your help.

If anyone has a post or guide they can point me to in order to configure the mining software i would be grateful. I would like to find second headers nonce in the op at the similar difficulty as the first headers hash target if possible

Approximately how long would it have taken to find the nonce in the first header of this post with an s5. I just want to know if its worth it if it mightve taken a few days

I do sort of want to solo mine. The whole purpose of wht im trying to do is data analysis. All i would like to see is what the nonce of the latter header would be at the same difficulty target.

If i were to set a solo miner up (have s5) can i configure mining software to specific difficulty rather than current. Also approx how long would it take an s5 to find this hours, days?

Yes that's what i mean. I have an antminer s5 but i dont know how to set it up to 'get work' specified for myself rather than that of a pool.

I could use excel but practically is going to way to slow.

Any tips on set up or point me to a guide?

If I wanted to compare data and grab a suitable nonce for example:

Version: 2
Prev. Block: 000000000000007a9e5cfce49e3e60e15e75ec1127b6171bec1408eb35cd26ee
Merkle Root: ca6f05ee8d7db3038bef35ae795a2fd2431f8c278dae61820974a872bc1878f7
Time: 3/21/13 8:09:35
Bits: 436434426
Nonce: 3947837747

To a set like:


Version: 1
Prev. Block: 000000000000007a9e5cfce49e3e60e15e75ec1127b6171bec1408eb35cd26ee
Merkle Root: ca6f05ee8d7db3038bef35ae795a2fd2431f8c278dae61820974a872bc1878f7
Time: 3/21/13 8:09:35
Bits: 436434426
Nonce: Unknown

What would the easiest way for this be if all I had was a computer and excel

Makes sense about being the same IP. So if I purchase a wifi ethernet bridge that should work? I read somewhere that my laptop and miner has to be ethernet to find eachother is this correct?

Also, with the beeping sound should I worry about this (I bought it from ebay)

I'm a hoobyist miner and quite new to setting up my s5 miner.

I wanted to know how I can:
Set-up my miner's connection from wifi to laptop to s5 miner (I've tried connecting it but I can't find my miner's ip when searching for it)

and

Set-up miner's connection from wifi to miner

another thing is when i press the small ip button on my miner I don't hear a beep sound I've read from a few sites is this normal

Thank you both, very informative 

Apologies, I just re-read it.

So basically if someone else mines it and it is equal to the line of mine I am going to carry on mining my next block with the hope that mine is accepted over there's, if there's is higher than mine then I dump my because my hashPrevBlock is incorrect anyway. Is this correct? What is height determine by?

Brilliant, thank you.

There's something I don't understand:


- If I am broadcasting that means I confirm that it is valid > If it is valid am I not now supposed to change the 'hashPrevBlock' for the new one I have just confirmed?

Sorry really confused with this part   

I always thought that blocks were like trees where one transaction creates a branch. Is it more like a line and where one fork or double spending creates a branch?

I ask this because I thought hashPrevBlock would stay the same for a transaction when trying to mine it until the transaction in the block has been mined but now I'm assuming it changes everytime someone mines a block unassociated to that transaction?

Also, on a side note, if I were to start mining would my machine also be 'listening' to blocks which have been mined in order to update itself and 'pass' on the work and get more work as the block it was trying to mine has already been discovered? If we say 50% of machines are needed to confirm correct nonce for your discovered block are we waiting on these 50% to agree and then you will get the reward? How does this reward process begin and end ie discovered block > sent to all machines > 50% confirm (how can my machine decide what 50% of the machines are?) > they've confirmed > the reward is assigned to my address (how does this get assigned via blockchain?)

Any help please. How can i configure standalone asic like antminer to mine transaction criteria that i want it to?

Im planning to buy a asic for some testing. If I buy one can the input (ie header) be configured to what i want it to be? Also, I want to get work on selected transactions only.

Is configuration possible with asic or do i have to use as is?

I was just reading about the increased block size limit from 1mb to 2mb and that the code will be released in July and will hard-forked in july 2017.

Now technically I'm not very sound when it comes to mining bitcoins as I'm still learning. My question is does this mean the coding of how the header is hashed will change slightly and include more variables (eg timestamp, nonce, merkle root etc) or does this mean the transaction are just going to be upped to a limit of 2mb and the 2 rounds of 256 hash will remain the same?

Thanks

yes, the last one is even in my favourites bar. But like I said I wanted to double-check and sometimes it is hard for someone like me to read and comprehend such technical info compared to asking a direct question on a forum like this which has a section for beginners with helpful members who are willing to help.

Thanks knightdk 

Thanks a lot, really helpful.

One last question. Is a extranonce calculated as such:

Hash(Coinbase)+Hash(Extranonce) Then added to Merkle root as such Hash(Transaction total), concatenate to Coinbases hash and then re-hashed?

Is there any way to manipulate the first part of a merkle root (using extranonce within coinbase) eg

ca6f05ee8d7db3038bef35ae795a2fd2431f8c278dae61820974a872bc1878f7