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[dutchlincoln]

Can someone tell me why my hasrateunder "workers" is different then the stated hasrate thats displayed in Awesome miner, and the miner itself?
difference goes up to some Th per miner sometimes...?

[1714231349]

1714231349

[kano]

Can someone tell me why my hasrateunder "workers" is different then the stated hasrate thats displayed in Awesome miner, and the miner itself?
difference goes up to some Th per miner sometimes...?

The hash rate on the pool is based on your submitted shares - since submitted shares is what you are rewarded for.
Shares have variance just like blocks do. Just that you find a lot more shares than blocks
Thus your hash rate shows up and down over e.g. even every shift.

As an example, using the CDF table, on average, a miner hashing at 18 SPM (shares per minute) will take 33.333 seconds or longer to find a share about once every 20.4 hrs.
Yet normally it takes 3.3333 seconds to find a share.
This is calculated from:

Code:

 0.99995460007024  1000.000%  1 in 22026.5

A 33.333 second share is a 1000% share i.e. 10 times the expected average time, so on average, over a large sample, once every 22026.5 shares you find will take 10 time the expected share time.
i.e. hashing at average 18 SPM that's once every (22026.5/18) minutes or 20.4 hours

The point of that is to show that clearly over an hour of hashing, your share based hash rate does vary due to expected random variance of finding shares. You get long and short shares - and it would take a day or more to get a close estimate of the miner hash rate based on the shares, assuming the miner hash rate was always constant also (which it wont be)

The hash rate on the miner (and anything using the API to read that) is dependent upon a few things:
1) It will have a long term hash rate that of course will not match what it's current hash rate is, since the hash rate even on the miner will go up and down a bit.
2) The miner itself may reports 1 diff shares or pool diff shares, so that will affect how much variance the miner hash rate will show
3) The miner hash rate is an estimate, not an exact calculation.

[ultimul]

4th block in a row over 160% . . . .
something is wrong here

"9 blocks this month under 100%....
something is wrong here"

(...said no one ever!)

MINE ON WITH KANO-SAN!!!

stop acting like a bully, if you did not understand the question just ask for details, you will learn something new every day if you want;

4th block in a row over 160% . . . .
something is wrong here

The probability of the found blocks is shown clearly on the Blocks page.

The probability of the luck of the last 5 found blocks is ... as it says ... CDF[Erl] 0.7670
Which means ... 1/(1-0.7670) = 1 in 4.292 of that happening or since it's 5 blocks, 1 in 21.46 blocks of that happening.
So yep, if you look at any pool out there what doesn't hide their block history, you'll find the current 5 found block luck happen, on average, about every 22 blocks.

After we find the next block, it will again show the numbers.
We'll see what it is when we find the next block.

probably will be little over 200%

It was 141.334%

actually your math is wrong; having 4 blocks in a row over 150% the probability is very low; not every 20-22 blocks like you want to tell us;

[Steamtyme]

Off-topic,

Any oldtimers here who lost funds in the MT. Gox debacle?

I just read Japan changed up the proceeding to force settlement payouts to be in the form of BTC, as opposed to the FIAT option the bankruptcy proceedings would have had.
That is all.

Mine on. Oh yeah got  3 more 741's online today, just waiting for my PSU to show up and I can turn on their loud idiot stepbrother, T9+.

[kano]

...

4th block in a row over 160% . . . .
something is wrong here

The probability of the found blocks is shown clearly on the Blocks page.

The probability of the luck of the last 5 found blocks is ... as it says ... CDF[Erl] 0.7670
Which means ... 1/(1-0.7670) = 1 in 4.292 of that happening or since it's 5 blocks, 1 in 21.46 blocks of that happening.
So yep, if you look at any pool out there what doesn't hide their block history, you'll find the current 5 found block luck happen, on average, about every 22 blocks.

After we find the next block, it will again show the numbers.
We'll see what it is when we find the next block.

probably will be little over 200%

It was 141.334%

actually your math is wrong; having 4 blocks in a row over 150% the probability is very low; not every 20-22 blocks like you want to tell us;

My math is correct and is also based on the last 5 blocks ... as it says ... and as the web site says.

Also read the parts in bold red.

I don't predict the future.

[BSGMiner]

4th block in a row over 160% . . . .
something is wrong here

"9 blocks this month under 100%....
something is wrong here"

(...said no one ever!)

MINE ON WITH KANO-SAN!!!

stop acting like a bully...

Don't melt, snowflake.

[clgrissom3]

Off-topic,

Any oldtimers here who lost funds in the MT. Gox debacle?

I just read Japan changed up the proceeding to force settlement payouts to be in the form of BTC, as opposed to the FIAT option the bankruptcy proceedings would have had.
That is all.

Mine on. Oh yeah got  3 more 741's online today, just waiting for my PSU to show up and I can turn on their loud idiot stepbrother, T9+.

I think Elaine (firetreeactual) got hurt pretty bad in the Mt Gox disaster...She's one I can recall that got caught up in that mess.

[Steamtyme]

I think Elaine (firetreeactual) got hurt pretty bad in the Mt Gox disaster...She's one I can recall that got caught up in that mess.

Damn, that sucks. Well from what I've been seeing (dealing with the island issues) they carry an optimistic outlook on life, and after the last couple months could use some good news.

I started a thread and someone in there brought some Reddit info, as to what the payout scheme may be.

I'm hoping it stays up to date and eventually gets some concrete numbers.

actually your math is wrong; having 4 blocks in a row over 150% the probability is very low; not every 20-22 blocks like you want to tell us;

My math is correct and is also based on the last 5 blocks ... as it says ... and as the web site says.

Also read the parts in bold red.

I don't predict the future.

Calling Kano out on math... why not just challenge (insert legend name here) to a ( insert legends profession) ... excludes Michael Jordan in MLB 

[BSGMiner]

Calling Kano out on math... why not just challenge (insert legend name here) to a ( insert legends profession) ... excludes Michael Jordan in MLB 

And for his next act, he'll criticize Tom Selleck's mustache and Chuck Norris' beard...

[BSGMiner]

*** Top posting for effect ***

So, I came across this recently when looking back over some old posts from when we were in a similarly long-feeling block--much less PHs back then, though.

Anyway, I thought it'd be a perfect time to bump this to the top--especially to highlight that Kano knows what he's talking about. We got your back, Kano-san.

So, I felt the urge to ramble on about Bitcoin again[...]

Rather than try to edit in and out of the various posts ... here's how mining works

Firstly, mining is exactly the same as rolling a dice ... except for the number of possible solutions!
When you roll a dice, you have a 1 in 6 chance of getting a 6.
There's no progress to getting a 6, ever. You either get a 6 or you don't.
One try = yes or no. No history involved.

With Bitcoin the dice actually has 2^256 sides - yeah that's a pretty big number ~1.579x10^77
And ... there's more than one solution that's valid.
Any "side of the dice" that has enough zeros on the front, and is less than a specified value, is a block.
Of that ~1.579x10^77 number, the current difficulty decides how many sides mean we found a block.

The current difficulty is actually "0x176c2146" which is called "bits" and is 4 bytes of the data we hash.
"0x17" = 23 decimal and 32-23 = 9 bytes of leading zeros (i.e. 9 times '00')
The rest is "0x6c2146"
So, what those 2 numbers mean is that any block hash with a hex value of
H=0x0000000000000000006c21460000000000000000000000000000000000000000 or less is a block

and if you divide 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff+1 (~1.579x10^77) by H and divide it again by 0x100000000 (2^32) you will get that network difficulty number:
Nd = 2,603,077,300,218.593
which means that every 2^32 times you roll the Bitcoin dice (i.e. hash a full nonce range) you have a 1 in 2,603,077,300,218.593 chance of finding a block.

... and the reason we divide by 0x100000000 again is that the network difficulty number of 1 represents 2^32 hashes

So ... that's how hashing works, but what are we actually hashing?

I wrote a document about it once, I'll repeat a little bit here:

The structure of a block header is an 80 byte binary data set, defined as follows:
Version                   4 bytes
Previous Block Hash      32 bytes
Merkle Root              32 bytes
Block Time                4 byte Unix Timestamp
Required Hash Difficulty  4 bytes
Hash Nonce                4 bytes

So looking at that we can vary 3 things:
Merkle root, Block Time and Hash Nonce

Normal hashing is to setup everything except the Hash Nonce and then count the Hash Nonce from 0 to 2^32-1 and hash each one.
Hashing the full Nonce range from 0 to 2^32-1 is also called 1 difficulty.

With stratum we can modify the Merkle Root to generate a different block header to hash the Nonce range.
The Merkle Root is a hash tree of the transactions we include in the block, however there's one transaction that we can change with stratum, and that is the coinbase transaction - or the transaction that pays the miner.
In this transaction we only need to make sure that:
1) It's a valid transaction (which is actually pretty random for the coinbase transaction due to the "sig" being allowed to contain almost anything as long as it starts with 'height')
2) It pays out to the expected address we want to receive the generated Bitcoins
3) The amount it pays is correct

So for stratum we put a bunch of other 'nonces' in the coinbase sig, that includes a unique number for each miner, and run the others from 0 up to some specified limit to generate a different coinbase transaction each time, that will generate a unique Merkle Root, to be put in a block header, to be hashed over the full Nonce range.

Thus with the unique number for each miner, and the miner itself following the stratum rules for creating coinbase transactions, the miner can keep generating a large amount of work that isn't expected to run out before the pool sends it new work.

Lastly, every time the miner finds a hash value that is higher than the difficulty specified by the pool, the miner sends the nonce and the "sig" nonces back to the pool.
The pool hashes those nonces with the values it sent to the miner, and thus verifies it's valid, and thus rewards the miner with the difficulty of the work sent to  the miner.

Now one more thing I'll add, that got mention a little while back, is that the miner can't modify the payout address to 'steal' the block.
The reason is that the pool wont get a valid hash of the nonces sent back, so the miner will get no reward. Simple

[kano]

Off-topic,

Any oldtimers here who lost funds in the MT. Gox debacle?

I just read Japan changed up the proceeding to force settlement payouts to be in the form of BTC, as opposed to the FIAT option the bankruptcy proceedings would have had.
That is all.

Mine on. Oh yeah got  3 more 741's online today, just waiting for my PSU to show up and I can turn on their loud idiot stepbrother, T9+.

I think Elaine (firetreeactual) got hurt pretty bad in the Mt Gox disaster...She's one I can recall that got caught up in that mess.

Yeah I got the email the other day also ... maybe I'll try to get my 10BTC back after all

[Vlada69]

Carl! Lend me that turkey please. At this point I am willing to try anything and everything.

[Steamtyme]

Yeah I got the email the other day also ... maybe I'll try to get my 10BTC back after all

What's yours is yours.
I wouldn't leave it out there. It can help offset the BTC you set aside for the giveaway.

[clgrissom3]

Carl! Lend me that turkey please. At this point I am willing to try anything and everything.

Haha!  Hear you go!  Block block!

[Vlada69]

Carl! Lend me that turkey please. At this point I am willing to try anything and everything.

Haha!  Hear you go!  Block block!

Thanks buddy! Now it is gobble gobble 300% block time

[highlander113]

Carl! Lend me that turkey please. At this point I am willing to try anything and everything.

Haha!  Hear you go!  Block block!

https://i.imgur.com/Tymq9pm.jpg

Wait a sec is that turkey dead well no wonder it can't find anything how about a live chicken can you get us one of those please.

[ccgllc]

Carl! Lend me that turkey please. At this point I am willing to try anything and everything.

Haha!  Hear you go!  Block block!

Wait a sec is that turkey dead well no wonder it can't find anything how about a live chicken can you get us one of those please.

I have a whole flock working on the problem (yeah, I really do live on a farm...):

[swanny88]

Carl! Lend me that turkey please. At this point I am willing to try anything and everything.

Haha!  Hear you go!  Block block!

https://i.imgur.com/Tymq9pm.jpg

Wait a sec is that turkey dead well no wonder it can't find anything how about a live chicken can you get us one of those please.

I have a whole flock working on the problem (yeah, I really do live on a farm...):

http://puu.sh/AOGrD/b04caf4ead.jpg

It's almost time to start "talking" about reboots!  haha

[Shazam!!!]

It's almost time to start "talking" about reboots!  haha

Nooo!!!

Hahahaha!!!

[highlander113]

Carl! Lend me that turkey please. At this point I am willing to try anything and everything.

Haha!  Hear you go!  Block block!

https://i.imgur.com/Tymq9pm.jpg

Wait a sec is that turkey dead well no wonder it can't find anything how about a live chicken can you get us one of those please.

I have a whole flock working on the problem (yeah, I really do live on a farm...):

http://puu.sh/AOGrD/b04caf4ead.jpg

Holly Chicken that is the coolest thing i have seen in while you are cool MINE ON!!!!