Topic: [1050 TH] BitMinter.com [1% PPLNS,Pays TxFees +MergedMining,Stratum,GBT,vardiff] - page 311. (Read 837101 times)

Hi,

Me and my 6 gpu farm are back, I lost faith with p2pools luck (12% missing since forever). Any big changes that could require my immediate attention in the last 2 months ?

Stats->blocks: "all" filter seems to only show BTC, otherwise looks good.

Another website update. Here are the news:

• Perk support completed. One perk added so far:
• Prepay perk. If you have this perk activated you get paid when the block is created (unless stale). No waiting for 120 blocks, and you keep the coins if it later becomes orphaned and worthless.
• Start off new users with the prepay perk activated for both BTC and NMC.
• Stale blocks now listed as "stale" (previously not shown). These are blocks that have never been part of the longest chain. There is no pay for these, even with the prepay perk.
• Small bugfix on login page: switch keyboard focus to input field after you click an OpenID provider logo (was not working).
• Don't extrapolate stales in live stat shift display (forgotten in the last update).
• Site navigation and info/error messages (if any) stick to the top when scrolling down. This was done so you can see new messages appearing as you interact with something far down on a page. Having navigation always available also seems handy.
• Fix luck statistics. Since a backend update a few days ago it's been displaying blocks we didn't make (with 0% CDF).

You may have to clear your browser cache before the navbar & messages will stick when scrolling.

As always, please let me know ASAP if you experience any difficulties.

Oops! Sorry about that. I'll try and get a fix in with some other updates tonight.


Looking good!

So far, the fixed 5870 is holding up. We shall see how they go through this night.

Dr, I think the luck page is a little broke. All but a couple of points show 0% CDF for me.

I have a 5870 that went down a few weeks ago before I had a few funerals to attend. I just got most of my crap back together and working normal. Working on my card now, and I hope to be back up there Hash-wise with you Doc!

Nice summary about block withholding, DnT. Should perhaps go on the bitcoin stackexchange?


Yeah, the hope would just be to discourage it by making it as expensive as possible. I think at least that PPLNS has an advantage over PPS-based payout models in this. If you hurt the pool 10% then you hurt yourself 10% too.

But you are probably right that adding a minting bonus to this wouldn't be a big deal. If someone is willing to lose a considerable income from their mining just to hurt your pool, then an extra 1% loss is not going to stop them.


Yeah, perhaps something for the altchains to think about. But I have the feeling most of them just want to make a quick buck, not contribute something useful.


Thanks! I got two blocks only 3 days apart - quite happy with that.

Nice job on your solved block Doc!

Yeah the only option to fight block witholding is an unavoidable "minting bonus", and I honestly wonder how effective a minting bonus is.  Say someone joined BM (or p2pool) with the intent to drive down luck by witholding blocks.  To have any detectible effect they would need to be large.  Say at least 10% of the pool.  The "cost" of the attack is a % of their hashing power which is the same % as their share of the pool's hashing power.

Example:
BM hashing power: ~130 GH/s
Attacker hashing power: ~13 GH/s
BM % of pool's hashing power: =~10%.
IF attacker withhold all blocks all miners lose 10% revenue.
Attacker's cost is 10% of 13GH/s = 1.3GH/s lost revenue (for as long as the attack continues).

A minting bonus doesn't really change that cost much.   A 1% minting bonus mans the attacker loses 1.3 GH/s (normal) plus 1% of the blocks he finds (0.01 * 13 = 0.13 GH/s).  A 1% bonus has increased the cost to the attack by 0.13 GH/s (~10%). 

Since there is no economic value to withholding blocks the attackers motivation is non-economical.  The minting bonus doesn't really materially change the cost. 


Sadly the "real fix" would be blind hashing (miner doesn't know if the hash solves a block or not) and that simply isn't possible with Bitcoin without a breaking protocol change.  Maybe the "next" blockchain will incorporate ideas like that.

Good idea. I like the thought that if you contribute something you get something in return.

Only downside is that it doesn't help against block withholding. But with PPLNS miners at least have some incentive to not withhold blocks. So maybe it's not needed.

Agreed!

To be fair, we deserved it after that 4 day one...

It is interesting achievment! DrHaribo placed it as news on BitMinter home page.
I think that even better is that we have 4 BTC blocks in 24 hrs - lets go for more ... fingers crossed.

No one is flipping out about the 0h00m block found by Germ after 282 works submitted?

To be fair one thing you may wish to do is make the "minting bonus" only payable to those who enable "minting bonus" donation.

Could make it something like 2% max donation.  If you donate the max and solve a block you get the payout.  If you donate say 1% instead you get half the payout, 0.5% gets you 1/4 the payout.  The payout is based on the optional minting donation/fee set by the miner at the time the block is found.

That way the minting bonus money circulates among "players".  More likely to encourage donations that way.

Damn, I turned on cheat mode for the wrong type of coin 

Nice streak of NMC blocks!

Could we do it also with BTC blocks?   

anyone else been watching namecoin's price rise? sweet!!

Dave has slain the dragon! All hail Dave!

I paid out a 2 BTC bonus for that. That block was really bad. Need to think about an automatic and more permanent bonus system for blocks.

I think some pools reserve a percentage of the income for the person who created the block.

Another option is a new donation cause ('Minting bonus' or something like that?). The payout for each block could be whatever is in the donation box at the time. Or it could be CDF percent of the donations. So if you get an easy 10% block, you get 10% of the current donations. For a block like today 99.9% of the available donated funds.