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6361  Bitcoin / Project Development / POLL: Would you use a mining-only datacenter facility? on: July 26, 2011, 03:25:34 AM
I am considering partnering with someone who has funds, renting some office space, retrofitting it with whatever electrical and cooling is necessary for a small datacenter, and renting out server "slots", for people who can no longer host their rigs in their apartments/houses/basements.

The service would only use a basic internet service with connections only allowed for VNC/SSH and the bitcoin mining applications themselves.  No webhosting, etc allowed.  Mining rigs ONLY.

The service would track electricity usage, and would charge a base rate per rig + actual electric usage each month.  If mining became somewhat unprofitable for a week or two, you could simply turn it off, and only be charged the base rate for that period.

You wouldn't have remote control of the power directly, so in the even of a hard lockup or shut down, we would provide a "request power on" button in a web interface.  Your rig would be powered back on within 24 hours.  For this reason, it is imperative that you already have a stable configuration prior to shipping to our facility.

All management of your mining rig(s) would be done by you.  We wouldn't touch it.  You would be responsible for remotely accessing your server, once we unpackage it and start it up, to get the mining running.  You would also be responsible for your own software security.  Given that many machines would be on the same network, you should set up a software firewall appropriately to isolate your rig(s) from the other rigs.

A security firm would be hired for installation and monitoring of a security system intended to protect the building from theft.  Insurance would also be purchased to cover the contents of the building in the event of damages.

Rates would be something along the lines of:
$20-$30 per rig per month
$0.10-$0.15 per kwh per month

Would you use such a service at such rates?  If so, how many rigs would you rent space for?  Vote in the poll!

Also, do you see any potential problems that I have not addressed?  Any potential security or performance issues?
6362  Bitcoin / Project Development / Re: BitRack? on: July 25, 2011, 11:53:02 PM
Tis an interesting idea.  Shipping a rig with already-installed, extremely heavy video cards is a bad idea though, which means you would have to have people ship their rigs without the video cards installed, and you'd have to deal with installing them yourself.

You could charge a base amount for a tower, then additional based on electric usage.  With high usage throughout the facility, you should be able to negotiate with the local electric company down to rates like $0.03/kwh.  That would help make up the difference for what it costs to rent the facility.  You'd have to have a way to track total electric usage for each rig each month, which could end up being expensive.  Or you could do it the ghetto way, and just have each rig run through its own kill-a-watt, writing down the data each month and resetting it.

You could offer "rig reset" requests, so that if someone needs a hard reset done on their rig, they submit a request through some web panel, and then next time you are at the data center, you can reset the rig manually.  Or better yet, rig up some sort of PLC that is controllable from the web interface that allows them to cut power to the machine if they like.  Just remind them to set their BIOS to power-on after power loss prior to shipping the machine to you.

One potential problem is having each rig on the same network.  I suppose you could say that each person is responsible for their own rig's security, but that could fall apart if someone hacks into another person's server from their own server and hosts something illegal on it.

I'm not sure there's enough margin in in mining anymore to make something like this profitable, but let's take a look.

Take a typical mining rig:  A Sempron with 3 5850's.  It probably draws about 500w under full load mining.  Ok, so charge a base fee of $25 and $0.15/kwh.  Assume that your actual electric costs are $0.035/kwh, and that you use twice the actual electric draw per rig (to counter the heat produced by the rig, you must have A/C to cool it).

This rig would cost you $25.20/month in electricity.  It would bring in $79/month in revenue (paid by the miner).  It would make the miner 0.61 BTC/day, conservatively (assuming 333MH/s from each of them), or about 18.33/month.  At today's prices, that's $256.66.

So the miner makes $177.66 profit, you make $53.80 profit.

How many such rigs would you need to employ to cover the rent of a facility?  Probably not a whole lot, as small rental offices can be had in my area for a few hundred a month.  8 rigs might be enough to cover the rent for a small office area, and a 9th to cover the internet expense.  But, you'll likely have to upgrade the A/C and electrical prior to starting the project as well, which means higher capital costs that must be eventually recovered.

Interesting thoughts though.  I think there's definitely a market for it, but it might be difficult to find someone willing to take on the risk of spending a bunch of money on remodeling a rental whose sole revenue is reliant upon bitcoin mining continuing to be a profitable operation.
6363  Bitcoin / Project Development / Re: Please help me solve the problem of trust on: July 25, 2011, 08:50:04 PM
I clearly think that ripple is the way to go !

In a ripple based system you clearly indicate how many BTC you trust your friends with and
then those friend can use your trust as a line of credit.
(This might also make the bitcoin economy take of.)

I don't think a number between 0 and 1 will work because what does it mean ?
Would 0.254 mean that you friend is good for 10 BTC, 100 BTC or 1000 BTC ?

Learn about ripple based systems here.

http://www.youtube.com/watch?v=ySzqM5dpF7s

http://www.youtube.com/watch?v=CyiyUjPMs-g

Can people please post text instead of video?  I can read over 1000wpm at 91% comprehension - watching video is incredibly boring.

Self-rated systems seem weak or hard to scale.  If we try to make this analogous to something like the reputation system on ebay.  Then to gain a high-degree of trust I need to compromise the account of someone with a high-degree of trust.

But with the ripple system it seems like all I need to do is create an account "Bill", compromise any other account e.g. "Sally",  create a relationship between Bill and Sally assigning Bill a arbitrarily high amount of trust.  Now Bill can rip off anyone in Sally's web of trust for that amount.   The only thing that would stop this is, if (and this isn't documented) transactions between Bill and anyone in Sally's web of trust are constrained by Sally's trust level.  i.e. If I trust Sally for $50 it doesn't matter that she trusts Bill for $10000.   I still only trust Bill for $50.  Which means transactions are constrained by my trust of my local community.  Which seems hard to scale.

I suppose, if I'm reading this correctly then/ Ripple assumes that trusting someone to payback $50 is identical or at least proportional to my trust in their *fiscal judgement*.  Which is untrue.  I might trust my sister to pay me the $50 back she owes me but I might never trust her judgment on who to trust for $50 (or more).  Likewise it might be prudent to trust Jack's fiscal judgment (because he is a retired loans officer) but never trust him more than $50 because he's on a fixed income.
Lol, completely agree on the videos.  I hate trying to watch videos for intellectual stuff.  Much easier to comprehend if it is just read.  Reading also lets me move at my own pace.  I can't easily speed up or slow down a video.

Anyway, I agree with you about the difficulties facing a spiderweb of trust.  I suppose it could potentially be fixed by giving two ratings to a person - one as a trust rating for how much you trust them to pay back, and one as a trust rating for how much trust you put into their trust ratings.  These trust ratings would be compounded - for example, if you trust Sally's judgement for 50%, and Sally trusts Joe's judgement for 50%, and Joe has an overall feedback rating of 80%, then you would trust Joe 20%.  That way, the only people who would be at or near 100% trust would be those in your close circle of friends who really do trust each other 100%.

Of course, that kind of negates the whole purpose of a web trust system, since you're likely to know those people at or near 100% through other means already.  But I suppose new strands of relationships and trusts could be formed... it would just take a lot of people using such a system to make it useful.

You'd also have this issue:
- A scammer creates Sally, does various legitimate transactions to gain trust ratings by other people
- Scammer then creates Bill, with 100% trust from Sally.  Anyone who trusts Sally now also trusts Bill at the same trust rating
- Scammer scams people with Bill.
- Scammer then creates Bill #2, with 100% trust from Sally.  Etc etc...

Lots of difficult problems to solve with a web of trust like this.
6364  Bitcoin / Development & Technical Discussion / Re: A 'Redistribute coins' button on: July 25, 2011, 08:27:46 PM
That's just excellent work. I'm surprised it generated so little buzz and isn't adopted into the official client until now.

On a separate note, Suggester suggests a Redistribute coins button, an option which moves all your funds to a chosen number of new wallets with the desired proportion of your current coins assigned for each. A user would then be able to consolidate his wealth from all his, say, 17 addresses into just 3 new ones, with the first one containing 49% of his coins, the second one 26%, and the third 25% (he will be able to assign those %'s arbitrarily using a simple interface). Similarly, he might want to break up his single wallet into, say, 4 different wallets, using them for 4 different purposes. When the transactions clear after 10 minutes, it'll be harder for anyone to prove that this user still owns the coins previously associated with his identity.

For the suggestion to be practical for anonymity purposes though, I strongly recommend another adjustable option where the user chooses how much time to assign for the whole operation. For example, choosing "63.2 hours" would move random chunks of the coins into their new distribution over that period of time (the client would have to be connected for the whole duration). That would make plausible deniability much stronger because you usually don't have 17 people simultaneously sending all their coins to 3 new addresses! If done correctly, it will be virtually impossible after that for anyone to prove that he still owns the coins. We're essentially simulating a change-of-ownership.

This can all be currently done using windows explorer and separate wallet files, but it'll be a big pain in the butt.
That would be a great feature of an online wallet website.  Just send funds with the parameters and addresses, and it'll all be done automatically by the site for a small fee.
6365  Other / Politics & Society / Re: Atlas and Society: A Debate on: July 25, 2011, 08:25:29 PM
I like how Atlas hasn't even responded to this thread.
6366  Bitcoin / Bitcoin Discussion / Re: Why do you hoard bitcoin? Would you spend them if they were easier to obtain? on: July 25, 2011, 07:06:23 PM
A single bitcoin was worth what, a dollar just in April? and just pennies last year. I think Ill pass on buying some silly little nicknacks which could ultimately end up costing me thousands of dollars, thanks.

Look at this people. This is the intelligence of the bitcoin community.

That's right, it's fucked.
It's speculation.  He could be right, he could be wrong.  And not even you know whether he is or not.  The only thing that is certain is that we will find out in the future. 



I think the problem with this statement, being more polite than smexytimez, it that the idea that buying something now costs you money is a logical fallacy.

If I sell silver now at $40 an ounce, and it goes up to $50 next year, did I lose $10?  No.  Did doing the deal now cost me money?  No.

If I buy stock at 50, it goes up to 100, I sell, it goes up to 200, then back down to 25, how much money did I make?  How much did I lose?  What did I earn?  What did if cost?  I made a $50 profit.  It doesn't matter that I could have sold at 200.  I still made a $50 profit.

The 10,000 BTC pizza never cost anyone $140,000.  The guy who bought it spent an appropriate amount at the time.  He didn't lose money by spending it.

Better wording would be that I expect to profit more if I hold it, not that I expect it to cost me by buying stuff now.  But then that gets us back to the argument that if no-one spends bitcoins, and everyone hoards, they won't be worth anything in the future, because they're useless.
It's called opportunity cost.  And yes, the threat of opportunity cost DOES cause people to not spend money.  This is why I do not believe an inherently deflationary currency will ever work.
6367  Bitcoin / Project Development / Re: Please help me solve the problem of trust on: July 25, 2011, 06:53:15 PM
I've thought about implementing a weighted trust system with bitcoinfeedback, but it would definitely require more usership.  A weighted system would be more along the lines of "X has a rating of 75%, and rates Y with a negative feedback, which is weight to 0.75 of a negative feedback."

It would be interesting to have a spiderweb of trusts like you talked about.  If you trust someone, and they trust someone else, then you can trust that person as well.  I'm not sure how well that would work in practice (for instance, a large company doing business with lots of people might be trusted 100% by you, but it would also introduce trust of everyone they've done successful business with - can you really rely on a person because they made one transaction with a large company?), but it is interesting to think about regardless.
Some kind of value expressing the nature of the purchases/sales. i.e. total purchases value (in the case you are selling to them) or sales (in the case you are buying from them).  Incomplete and open transactions would be interesting metrics.

Without these I can build up a reputation through a number of small purchases/sales and then rip a group of people off for a large amount.  However if I knew even say the percent of total sales that my purchase represented.   I'd tend to trust them more (on ebay I always look at the transaction history of a seller before I buy).
Excellent point, and I'll add BTC used in the transaction as a field in the feedback form.  BTC used in the transaction will likely have to be an optional field though, as I imagine many people will not want to give away the amount of BTC they spent.  But I do think it would be helpful to know if someone made 30 1 BTC transactions or 1 2000 BTC transaction.
6368  Other / Meta / Re: Ban Image Macros on: July 25, 2011, 06:45:48 PM
6369  Bitcoin / Pools / Re: [~10 GH/s] BitMinter.com *** 150 BTC promotion! *** 6-11% MORE BITCOINS *** on: July 25, 2011, 05:50:17 PM
Speeds are impressive!  Just trying this out on my 5770, and I'm getting around 185MH/s instead of 168MH/s with guiminer.

Always glad to hear reports of good performance. Smiley

To be honest, on a 5770 you can maybe get 1 MH/s higher with DiabloMiner or modified-Phoenix with modified-phatk kernel. I will be closing that gap later, to make this the fastest miner on any GPU. But for now, it's close enough to the best, while I work on some other things. Wink

I never could get phoenix working real well.  There were always weird quirks about it that I didn't like.  I'm just happy to have a miner that is much faster than guiminer without any weird quirks.

Will probably move my 2 GH/s over to this miner/your pool and see how things go.
6370  Other / Meta / Re: Ban Image Macros on: July 25, 2011, 05:44:39 PM
Would it help if we use the "report to mod" on all the stupid, useless ones?

Really, why do you need an image to make that statement? How is the image even related to the text? Why are you making a post three screens tall to deliver one line of poorly phrased text? Huff, huff, /rant
An image can convey a lot more than text can.  Especially some good laughs.

If the image is just text, then why not just write the text? Most of these images are not even funny.
What you find funny and what other people find funny could be completely different things.  You can't say "Most of these images are not even funny," because it's simply not true.  You can't make statements like that with the implication that they apply to anyone and everyone.

And none of those texts would be funny without the corresponding images.
6371  Bitcoin / Project Development / Re: Please help me solve the problem of trust on: July 25, 2011, 05:40:36 PM
I've thought about implementing a weighted trust system with bitcoinfeedback, but it would definitely require more usership.  A weighted system would be more along the lines of "X has a rating of 75%, and rates Y with a negative feedback, which is weight to 0.75 of a negative feedback."

It would be interesting to have a spiderweb of trusts like you talked about.  If you trust someone, and they trust someone else, then you can trust that person as well.  I'm not sure how well that would work in practice (for instance, a large company doing business with lots of people might be trusted 100% by you, but it would also introduce trust of everyone they've done successful business with - can you really rely on a person because they made one transaction with a large company?), but it is interesting to think about regardless.
6372  Other / Meta / Re: Ban Image Macros on: July 25, 2011, 05:23:17 PM
Would it help if we use the "report to mod" on all the stupid, useless ones?

Really, why do you need an image to make that statement? How is the image even related to the text? Why are you making a post three screens tall to deliver one line of poorly phrased text? Huff, huff, /rant
An image can convey a lot more than text can.  Especially some good laughs.
6373  Bitcoin / Pools / Re: [~10 GH/s] BitMinter.com *** 150 BTC promotion! *** 6-11% MORE BITCOINS *** on: July 25, 2011, 04:46:16 PM
Yes, try 10 ms intervals - should be smooth.

Smooth enough - thanks for helping the noob.  Tongue

Speeds are impressive!  Just trying this out on my 5770, and I'm getting around 185MH/s instead of 168MH/s with guiminer.
6374  Other / Meta / Re: Ban Image Macros on: July 25, 2011, 04:27:40 PM
Things like the image Atlas posted above contribute nothing to a thread other than to eat bandwidth and pad his post count. I understand you might personally like them, but are you seriously making policy decisions based off of personal taste?

I would also argue that image macros are the very definition of image spamming.
Some people like images... especially the funny ones... like the one Atlas posted above.  I enjoy those sort of things.  And I'm not some teenager from 4chan, I just enjoy that type of humor.

Just because you don't like it doesn't mean everyone else agrees with you.
6375  Bitcoin / Pools / Re: [~10 GH/s] BitMinter.com *** 150 BTC promotion! *** 6-11% MORE BITCOINS *** on: July 25, 2011, 04:23:02 PM
Question:  What can I adjust to make mouse movement less jerky on a machine that I regularly use?  I tried setting the break interval to 1000 ms, but it didn't help.  Anything else I can try?
6376  Economy / Speculation / Re: Is the rally train leaving the station at $14? on: July 25, 2011, 04:02:59 PM
Doesn't seem to be going anywhere... 14.3 is all.
6377  Bitcoin / Mining / Re: Best Battery Backup for Your Rigs? on: July 23, 2011, 11:18:08 PM
Do NOT change the circuit breaker for one with higher amperage!  The whole purpose of a circuit breaker is to ensure you aren't drawing more than 15 amps through the wiring, because it can't support it and could heat the wire up and start a fire.  If you increase the limit until the circuit breaker trips, you are bypassing the whole purpose of it.

Definitely sounds like you had too much on the circuit if it hasn't tripped since you removed everything else.  Does the trailer have more than one circuit you can use?  Or are you just not using some things now?
6378  Bitcoin / Bitcoin Discussion / Re: FirstBits.com - remember and share Bitcoin addresses on: July 23, 2011, 07:10:41 AM
Bug report: for some reason, copying and pasting an address gave weird results in this machine, so I partially copied it, then pasted it and manually typed the remaining characters. I unavoidably Smiley mistyped the last one, and entered "y" instead of "Y". I didn't get the message "This address isn't in the chain", but I got "Your firstbits address is:" instead, without any firstbits address after that message.
Bug is fixed, thanks for reporting!
6379  Other / Off-topic / Re: I GOT HACKED on: July 23, 2011, 04:24:42 AM


no one cares that you got hacked.

just like the asshole who said he got robbed of 25k btc.

any thread that starts with "i just got hacked" should be auto-deleted.
Not true.  I care.  And not just sympathetically for the victim, I like to learn what techniques hackers use so I can better protect myself.
6380  Economy / Speculation / Re: Long, slow slide on: July 22, 2011, 08:39:32 PM
What's special about bitcoin that you logic applies to it, but not the dollar? I don't necessarily disagree with you, but I think netrin has a point.

They're apples to orange comparisons.  An inflationary (dollars) to deflationary (bitcoin) model for one. 

Except the supply of bitcoins is inflating even faster than dollars.  The deflationary aspect of bitcoins only applies when the merchant and manufacturing economy grows rapidly, or when the inflation tapers off many years in the future.  Right now they are both apples.
That's true to some extent, but keep in mind, nearly 1/3 of the coins have been minted now (2.5 weeks until we hit 7M).  So that means, at max, bitcoin will only inflate an additional 200%.  It's still kind of orangish since people expect that deflation to happen in the future, so that extra bit of future value is built in to today's value.  Similarly, the future and expected devaluation of the dollar is built in to today's value of the dollar.
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