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Author Topic: [30PH] ckpool.org ZERO FEE SPLNS no registration mining pool US/DE/CN  (Read 106007 times)
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June 14, 2018, 06:02:39 AM
 #1661

How does block withholding work? I always thought it would be the pool that did the withholding, is it the miner that does it instead? What nefarious purposes can hashrate be used for (besides block withholding)?
A pool stands nothing to gain by withholding a block - they lose the block reward! Block withholding works by the miner withholding the block from the pool, but still getting paid by the pool - that only works if the upstream pool pays you whether the pool finds blocks or not; i.e. for PPS only. The miner gets their payout regardless, but the pool gets nothing, thus harming the pool, but also advantageous to the miner is the fact it keeps mining difficulty lower.

Pools have used their hashrate in the past to secretly merge mine other coins, including at least one known public instance of destroying an altcoin. The main concern with a pool getting enough hashrate is obviously double spending, but a pool would need to be 1/3 of the network hashrate or more so that's unlikely to happen just because of a high PPS rewards percentage... unless antpool started offering too high for comfort.

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June 14, 2018, 04:32:54 PM
 #1662

BLOCK! (527356)
13hr 20mins!  Shocked
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June 14, 2018, 05:34:05 PM
Merited by frodocooper (1)
 #1663

BLOCK! (527356)
13hr 20mins!  Shocked


well that was hours ago   but it was a "lucky" block  well under 100%

would  be nice if it hits again while my lamb ribs are roasting in the oven and my wife and I walk on the beach.

We are just about to drive to the beach for a nice  pre diner walk.

I mine alt coins with https://simplemining.net...
I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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June 14, 2018, 06:37:25 PM
 #1664

Watching the chain to see if we win a double race... likely the only adrenaline-inducing thing left in mining.  Undecided
Watching the pool you mine in lose that race... likely the worst feeling left in mining.  Cry

If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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June 14, 2018, 08:24:40 PM
 #1665

Thank you for the answers guys.   I have a measly 170 t/h up and running with slush and due to hit payout threshold in a day or so~      When that happens I will make the switch and come join the party!   
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June 14, 2018, 09:15:01 PM
Merited by ComputerGenie (10), frodocooper (1)
 #1666

Watching the chain to see if we win a double race... likely the only adrenaline-inducing thing left in mining.  Undecided
Watching the pool you mine in lose that race... likely the worst feeling left in mining.  Cry
Alas it was a foregone conclusion. It wasn't much of an orphan race at all, so even the fast block change code in the pool couldn't have prevented us losing that one.

For people wondering what he's talking about, we had a block orphaned. What happened was the block had already been solved by another pool, but a miner submitted a stale share 700ms later that was also a block solve. There was almost no chance it was going to be successful, but the pool will try to use it as a block solve anyway, forcing bitcoind to accept the block, in the unlikely event it wins the orphan race (or solves two blocks back to back). Realistically the pool can just ignore it since it was stale but we'll try anything to get a block.

Here are the pool logs where you can see it says it's submitting a stale share block solve:
Code:
[2018-06-14 18:11:25.412] Block hash changed to 00000000000000000037e634734805d4a48f7d50125ecc55a2f137e2722a32f3
[2018-06-14 18:11:26.100] Possible stale share block solve diff 10130992321539.841797 !
[2018-06-14 18:11:26.100] Submitting block data!
[2018-06-14 18:11:26.107] SUBMIT BLOCK RETURNED: inconclusive
[2018-06-14 18:11:26.171] Hash for block height 527471 confirms block was ACCEPTED
[2018-06-14 18:11:26.176] Solved block 527471 by 36JMs8rogpizjkkp6eeKMmm3SLbSNo5H9V.0
[2018-06-14 18:11:26.176] User 36JMs8rogpizjkkp6eeKMmm3SLbSNo5H9V:{"hashrate1m": "142P", "hashrate5m": "142P", "hashrate1hr": "136P", "hashrate1d": "83.7P", "hashrate7d": "56.6P"}
[2018-06-14 18:11:26.176] Worker 36JMs8rogpizjkkp6eeKMmm3SLbSNo5H9V.0:{"hashrate1m": "107P", "hashrate5m": "107P", "hashrate1hr": "102P", "hashrate1d": "73.4P", "hashrate7d": "54.6P"}
[2018-06-14 18:11:26.272] Block hash changed to 0000000000000000001bc87b3d85516a0b00bf873a43dbef986125c269c210d8
[2018-06-14 18:32:31.978] Hash for block height 527471 confirms block was ORPHANED
At the end the pool sees that it lost the orphan race and moves to the new block. Unfortunate, but one of the realities of mining. The only fortunate part is the pool code already takes into account what should happen in the case of an orphan, to prevent the interleaved payouts getting out of sync. It will also NOT artificially reset the diff back to 0% since we didn't win a block.

You can see the full details of what would have been a block in this sadly named block file:
http://ckpool.org/blocks/527471.orphaned

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June 14, 2018, 09:50:25 PM
Merited by frodocooper (1)
 #1667

...At the end the pool sees that it lost the orphan race and moves to the new block. Unfortunate, but one of the realities of mining. The only fortunate part is the pool code already takes into account what should happen in the case of an orphan, to prevent the interleaved payouts getting out of sync...
I do have to say that I was watching the pool at the same time and I love that it got marked as unconfirmed until the 2nd block and then marked as orphaned. One of the reasons that I love you as a coder is that you're one of the few that actually make a stratum based on protocol, rather than pure cron checks and/or some other dumb shit I've seen.

If you have to ask "why?", you wouldn`t understand my answer.
Always be on the look out, because you never know when you'll be stalked by hit-men that eat nothing but cream cheese....
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June 14, 2018, 10:58:26 PM
Merited by frodocooper (1)
 #1668

99% of the challenge of coding is resolving the 1% of exceptions that need to be planned for and handled correctly when they occur.
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June 14, 2018, 11:34:49 PM
 #1669

Our difficulty % was around 125%
Code:
"solvedby": "36JMs8rogpizjkkp6eeKMmm3SLbSNo5H9V",
 "date": "[2018-06-13 13:28:53.840]",
 "hash": "00000000000000000031552854fde522e73177585ecd463dea64fb503c4e0083",
 "shares": 6085301242740,
 "diff": 123.2

I was wondering where is this 'solvedby' URL?
Thanks!
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June 14, 2018, 11:42:15 PM
 #1670

Our difficulty % was around 125%
Code:
"solvedby": "36JMs8rogpizjkkp6eeKMmm3SLbSNo5H9V",
 "date": "[2018-06-13 13:28:53.840]",
 "hash": "00000000000000000031552854fde522e73177585ecd463dea64fb503c4e0083",
 "shares": 6085301242740,
 "diff": 123.2

I was wondering where is this 'solvedby' URL?
Thanks!

Are you looking for the URL to actually see the block info ?  Here:  https://btc.com/stats/pool/CKPool
Height:  527,282
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June 14, 2018, 11:42:41 PM
 #1671

Our difficulty % was around 125%
Code:
"solvedby": "36JMs8rogpizjkkp6eeKMmm3SLbSNo5H9V",
 "date": "[2018-06-13 13:28:53.840]",
 "hash": "00000000000000000031552854fde522e73177585ecd463dea64fb503c4e0083",
 "shares": 6085301242740,
 "diff": 123.2

I was wondering where is this 'solvedby' URL?
Thanks!

http://ckpool.org/blocks/

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June 15, 2018, 12:00:18 AM
 #1672

BLOCK! (527356)
13hr 20mins!  Shocked


well that was hours ago   but it was a "lucky" block  well under 100%

Ops!  Tongue
Forgotten to take into account the timezone. Was too excited!  Smiley

Timestamps in the /blocks URL are UTC-5?
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June 15, 2018, 01:23:22 AM
 #1673

Our difficulty % was around 125%
Code:
"solvedby": "36JMs8rogpizjkkp6eeKMmm3SLbSNo5H9V",
 "date": "[2018-06-13 13:28:53.840]",
 "hash": "00000000000000000031552854fde522e73177585ecd463dea64fb503c4e0083",
 "shares": 6085301242740,
 "diff": 123.2

I was wondering where is this 'solvedby' URL?
Thanks!

http://ckpool.org/blocks/

Thanks! Didn't noticed the above info was at the bottom of the blocks.  Roll Eyes
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June 15, 2018, 02:22:40 AM
 #1674

Making up for the orphan at 54.6% diff Smiley

This time it wasn't Halong! One of our regular miners (but with a Dragonmint T1 nonetheless).

Code:
[2018-06-15 02:07:52.153] Possible block solve diff 13236048667151.658203 !
[2018-06-15 02:07:52.242] BLOCK ACCEPTED!
[2018-06-15 02:07:52.251] Solved block 527499 by 1J17t8CjjVwegqn6Y4JC7osA8fNsuz8z5D.DMT11
[2018-06-15 02:07:52.251] User 1J17t8CjjVwegqn6Y4JC7osA8fNsuz8z5D:{"hashrate1m": "129T", "hashrate5m": "128T", "hashrate1hr": "124T", "hashrate1d": "118T", "hashrate7d": "105T"}
[2018-06-15 02:07:52.251] Worker 1J17t8CjjVwegqn6Y4JC7osA8fNsuz8z5D.DMT11:{"hashrate1m": "15.4T", "hashrate5m": "13.7T", "hashrate1hr": "12.9T", "hashrate1d": "9.85T", "hashrate7d": "8.94T"}
[2018-06-15 02:17:24.830] Hash for block height 527499 confirms block was CONFIRMED

https://btc.com/0000000000000000001543f546e5a30e8660394863199cb285342f58cade373e

Full payout details:
http://ckpool.org/blocks/527499.confirmed

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June 15, 2018, 02:33:05 AM
 #1675

Party!
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June 15, 2018, 02:41:30 AM
 #1676

Would have been a double block day  if not for the orphan!

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June 15, 2018, 02:45:41 AM
 #1677

Would have been a double block day  if not for the orphan!
Still might be.

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June 15, 2018, 02:52:30 AM
 #1678

Booya! BLOCK PARTY!!!

http://ckpool.org
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June 15, 2018, 02:54:17 AM
 #1679

"solvedby": "1J17t8CjjVwegqn6Y4JC7osA8fNsuz8z5D",
 "date": "[2018-06-15 02:07:52.247]",
 "hash": "0000000000000000001543f546e5a30e8660394863199cb285342f58cade373e",
 "shares": 2696179102157,
 "diff": 54.6

http://ckpool.org
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June 15, 2018, 03:07:22 AM
 #1680

got tx

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