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2741  Bitcoin / Mining speculation / Re: 21 Bitcoin Computer or Cloud Mining Website ? on: October 14, 2015, 09:38:39 PM
I think I will hold my Bitcoins.

What exactly is the The 21 Bitcoin Computer? (http://www.amazon.com/dp/B014RD021C). Is it like the stand-alone Bitcoin node that Bitnodes was offering, except this one has no screen?


EDIT: https://21.co/learn/faq/#what-is-the-21-bitcoin-computer

What is the 21 Bitcoin Chip?
The 21 Bitcoin Chip is an application specific integrated circuit (ASIC) specifically designed to provide a constant stream of bitcoin to your computer as a system resource.

Funny!  Grin

Is that for real? A mini ARM PC just like the Arduino or the RasPI (20$) ends up being 400$ because it comes with some software on it based on open source code?

Just wow. If that sell, some people here will make a killing making a image of a RasPI with a pre-setup bitcoincore/mining node where you just need to slap or generate a wallet.dat on it.

All they have to do is copy it to a cheap RasPI and they make 2000% return.
2742  Bitcoin / Bitcoin Discussion / Re: Will the Banking Industry kill Bitcoin and keep the Blockchain? on: October 14, 2015, 09:29:42 PM
you will think that it would be a viable solution for them to waste money to kill bitcoin, maybe viua 51% or something, when they can simply use those money to compete with it

or to raise infrastructure that can help regualte it and thus increase their taxes income? i think the latter is more advantageous for them

That is what i am suggesting, but i'm not sure what kind of infrastructure could be used to regulate BTC for that cheap when there is no way to know/prove who own what address until a user send money online to his bank.

As such if a user is careful and use stealth services, its very hard to do any regulating since it would require a lot of resources to little avail.

You could have them actively monitor billions of addresses and money moving to and from retailers that accept Bitcoin and match them with personal data that they aren't even legally allowed to request (in countries with proper civil rights).

And you'd need massive man power to shift through everything since its not because 2 address connect that all the connected addresses is owned by one person.

For instance if a user here is sending me money from an address connected to 10 addresses which 10s of addresses are connected to it and then i send that money to an address and cash it out, does it mean every address connected to it is mine? Of course not, and its nearly impossible to prove which is which by simple mathematical connections.
2743  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: October 14, 2015, 07:59:52 PM
http://www.guru3d.com/articles-pages/corsair-ax1500i-psu-review,9.html

10 PCI-E output, 10 PCI-E cables, up to 125 amp. 7 year warranty-most important
i think ,sustained over a longer life than the whole life of one S7  Grin Wink

I have many years of good experience with these http://www.guru3d.com/articles-pages/corsair-ax1200i-psu-review,9.html  


Thats a decent PSU but the price is out of this world. You can do better with 2x750-1050 EVGA P/G2/GS From one third the price to half the price for near or same efficiency depending on whether you get G or P.

The G2/GS are so popular because they push nearly Platinum efficiency and the price is right.

Could power the S7 for 150$ no problem with 10 or 7 years warranty.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=391

this one is the price for two 1000 watts...evga or corsair  and get 9/9 from johny

I have many many many many many many many psu's  and I should use many a few more times.

s-7 runs great with the evga 1600 p2


http://www.amazon.com/EVGA-SuperNOVA-PLATINUM-Crossfire-220-P2-1600-X1/dp/B00NJG61JQ/ref=sr_1_1?ie=UTF8&qid=1444852172&sr=8-1&keywords=evga+1600+p2

I am running on it as I type.

but it is costly psu.

the s-7 run goods on the evga 1300g2

 http://www.amazon.com/EVGA-SuperNOVA-Crossfire-Warranty-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?ie=UTF8&qid=1444852277&sr=8-1&keywords=evga+1300+g2

when I was running 2 s-7's I used it along with the  1600 watt platinum.

should you use the cheaper one? well I could argue no go for the plat.

Right, but thats still twice the cost of buying 2 smaller PSU. I was just pointing out that you can get to the same result by buying 2 smaller PSU instead of one big PSU that is worth 5 smaller PSU.

You're paying premium for 93%~ eff instead of 91%~ efficiency and for having the watt support in one unit instead of two.

For instance for under 300$ you could get 2 EVGA GS 1050W which would give you 91.0%+ Efficiency vs the AX1500i's 92.2% for 400$~ And it goes down to 200$ if you're okay with the efficiency dropping to 90% by getting 2 750W PSU, or 240$ for 2 850W PSU.

http://www.guru3d.com/articles-pages/corsair-ax1500i-psu-review,9.html

10 PCI-E output, 10 PCI-E cables, up to 125 amp. 7 year warranty-most important
i think ,sustained over a longer life than the whole life of one S7  Grin Wink

I have many years of good experience with these http://www.guru3d.com/articles-pages/corsair-ax1200i-psu-review,9.html  


Thats a decent PSU but the price is out of this world. You can do better with 2x750-1050 EVGA P/G2/GS From one third the price to half the price for near or same efficiency depending on whether you get G or P.

The G2/GS are so popular because they push nearly Platinum efficiency and the price is right.

Could power the S7 for 150$ no problem with 10 or 7 years warranty.

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=391

this one is the price for two 1000 watts...evga or corsair  and get 9/9 from johny

Same answer as above, you'll have more stable voltage and less psu strain and much better headroom if you go for 2x PSU and for cheaper. You could go with 2 smaller Plat PSU if you wanted to get better efficiency than the AX1500i and it would still be cheaper and you would still have better headroom.
2744  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: October 14, 2015, 07:10:54 PM
http://www.guru3d.com/articles-pages/corsair-ax1500i-psu-review,9.html

10 PCI-E output, 10 PCI-E cables, up to 125 amp. 7 year warranty-most important
i think ,sustained over a longer life than the whole life of one S7  Grin Wink

I have many years of good experience with these http://www.guru3d.com/articles-pages/corsair-ax1200i-psu-review,9.html 


Thats a decent PSU but the price is out of this world. You can do better with 2x750-1050 EVGA P/G2/GS From one third the price to half the price for near or same efficiency depending on whether you get G or P.

The G2/GS are so popular because they push nearly Platinum efficiency and the price is right.

Could power the S7 for 150$ no problem with 10 or 7 years warranty.
2745  Bitcoin / Mining support / Re: BFL Monarch - Strange Errors in BFGMiner on: October 14, 2015, 06:43:21 PM
I fixed this by upgrading to cgminer 4.9.2, it started a little rough but not longer after letting it run it just started running super smooth. I then restarted the software a few times to see if it was a fluke but it seems to be consistent. I then moved it to a whole other machine and ran the above version of cgminer and it worked and best of all it is actually performing much better than it's even designed to run at. It should be pushing around 700 gh/s and I am getting closer to 800 gh/s as it seems to bounce around 780-790~ or so.

One last note: I switched to antpool from slush, I dunno if this is a factor in it or not.

Its relatively normal, depending on which CGMiner version i'd use i'd get different hashrate too, but poolside, nearly no difference.

For pools, i'd recommend http://www.kano.is/index.php the payouts are much less steady but its less fee and better payouts into accounts of several factors, such as optimized pool code.

Thats the one i use but i think the most important point i'd like to advocate is pointing hashrate away from China. They centralized enough hashrate as it is already, imo.
2746  Other / Beginners & Help / Re: Can a bitcoin address can be recovered from public key??? on: October 14, 2015, 06:37:55 PM
No it is not.

Yes it is - do you understand that the question does not mention "private key" but instead "public key" or did you simply not read it?

It is a mess but if you put information like that, you will just cause confusion, and thus, a mess.

Unfortunately it is you (and most other posters in this topic) that are causing the mess and confusion by not even bothering to read the OP.

To the @OP - unfortunately this is why this forum is no longer very useful for any sort of technical advice. Sad


Looks like you are the only one to actually read the question indeed.

I think people just automatically assume private key whenever someone starts talking about recovering something from an address.

Are you guys done bashing? You cannot recover an address from another Bitcoin address. The whole process need to go back to the privkey, hence the comment of me and other users.

"That" is what was asked "Can you recover address from address" in broken English and that is the proper answer.
2747  Other / MultiBit / Re: Multibit HD 0.1.3 Password no longer valid on: October 14, 2015, 06:12:34 PM
The same bug raised on the multibit-hd issues database:

https://github.com/bitcoin-solutions/multibit-hd/issues/753

This was after an overnight Windows update apparently, though not sure if that is relevant.

I did not forget jim. If you still want it i will still give it to you but i'm still waiting for the pool payment, they're being slow as hell, usually they pay everyday even if its 0.005~.
2748  Bitcoin / Hardware / Re: s5 Fan Modification on: October 13, 2015, 11:20:37 PM
Hello Team!

I would like some guidance on fan modifications. I have recently purchased a S5 and I would like to learn how to replace the default fan and add a secondary fan for push/pull. Is this easy and just unplugging the fan and replacing it? Does the Antminer have a power input for the default fan and a secondary fan? What other tips do you have to make the unit run quiet?

Edit: Does the unit also shutdown if it gets too hot?

Thank you!

there are lots of threads on this, for example:
https://bitcointalk.org/index.php?topic=908494.msg10559364#msg10559364

personal experience: noctua 3000 works in push together with ultrakaze in pull (put ultrakaze on constant fan using molex directly from PSU)
http://www.amazon.com/gp/product/B00KFCRATC
http://www.amazon.com/Scythe-DFS123812H-3000-Ultra-Kaze-120mm/dp/B001JKNMBE

Total expense ~$40, miner is much quieter, but temp of the boards will rise to ~58C (with 28C ambient), which is still OK-I run them like this for months.

Thanks for this information! Would one fan connect directly to the Antminer and the other would be constant using a molex connector?

Does the S5 auto shutdown if the unit gets too hot?

It is supposed to autoshut down at 80c, but you should keep the miner at 60c or lower anyways. If you want another failsafe that is not software based use something like this;
http://www.ebay.com/itm/151348547627?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

A complete thread on the topic;
https://bitcointalk.org/index.php?topic=1115199.0
2749  Bitcoin / Mining speculation / Re: Is it worth it on: October 13, 2015, 11:18:21 PM
Thank you all who replied.

And I know GPU and CPU mining died, I just did it for fun xD
I was interested will it destroy the parts, got my answer, so thank you.

Don't take any recommendation at face value;

If properly cooled then not dangerous at all, if you need a cheap way to do it though, get a Sidehack USB stick. With the GPU and CPU you won't even meet dust minimum threshold and you'll be wasting electricity generating heat for nothing.
2750  Bitcoin / Bitcoin Discussion / Re: Will the Banking Industry kill Bitcoin and keep the Blockchain? on: October 13, 2015, 11:14:22 PM
I think that the banking sector will primarily ignore bitcoin and focus on the blockchain techonlogy rather that try to destroy bitcoin itself.

If the Bitcoin volume become too big, that will mean there will be a much lesser volume being used in US, CAD, Euro, etc, everything.

If the demand is lowered for USD and Cie then their value will drop, as such that could be a huge economical threats those big countries and then they might regret not killing Bitcoin when it would of only cost 1 billion USD.
2751  Economy / Trading Discussion / Re: What's the best (cheapest) website to buy bitcoin in Canada on: October 13, 2015, 11:12:35 PM
I've been looking at places to buy BTC from a Canadian bank account but it seems every site is riddled with fees in one way or another.

Virwox is more than 10% fee https://caktux.ca/virwox
LocalBitCoins is normally about 3-5% fee
Cavirtex charges a 0.8% fee for trades but also $7.50 to deposit fiat and $10 to withdraw fiat

I feel like I've looked for so many sites but none of them really work.

Ideally I'd love to find a place to buy BTC for around 1% above spot including deposit in fiat and withdrawal in BTC. Has anyone heard of a good place?

Coinbase;
https://www.coinbase.com/accounts/primary

Not much else to say, its instant with interact, you can raise your limit by verifying your identity and the fee is 1%+70cents i believe. Then you can send it back within 24hours to a bank account for 1%+1$.

Coinbase seems to be having some technical difficulties over the past month which has prevented me from using my account and many other users from accessing their funds. But otherwise, yes, they looked very appealing.

Ive had trouble getting my bank account connected, i had to go through a few session with a tech chat representative and eventually they manually fixed it or something. After that i been able to get funds in and out very quickly with no problem whatsoever. I done it twice for in the last month.
2752  Bitcoin / Bitcoin Discussion / Re: More people have to hold BitCoin on: October 13, 2015, 11:10:22 PM
I think we will need a balance between holding and spending. If everyone just hold their bitcoin, it will kill the potential of bitcoin.

There are already tons of people holding. Just look at the liquidity of BTC, the volume and how many BTC are listed at exchanges. The majority of BTC are lost or being held, so this whole topic is a Fallacy.

What we need is to continue making BTC accepted in more and more places.
2753  Bitcoin / Bitcoin Discussion / Re: Is there a way to earn at least $1 in BTC per hour? on: October 13, 2015, 11:08:58 PM
website in my signature,maybe ?
For example: Your deposit 0.001 BTC + many reffered users = fast profit.

I don't like to promote this things, but i really hate these "double your bitcoin".
Because the chances to get scammed are high.
Mostly these kind of websites pay their users at their beginnings but after the owner of this website has good income he closes and goes offline. So it is not recommended.

I hate doublers like this: " Sent 0.01 BTC and get back 1 BTC after 24/100 hours."
Website is one month paying, still waiting for more new investors.
Website v1.1 coming very soon! and you can deposit your money via BTC,LTC,DOGE or Payeer.

Thats because its a Ponzi, so sooner or later it will collapse and stop paying, if you want to make money with a Ponzi, you need to go quick in, quick out, and its still gambling, not an investment.

As such you should stay away from Ponzi if your goal is to "earn" BTC.
2754  Bitcoin / Bitcoin Discussion / Re: Is there a way to earn at least $1 in BTC per hour? on: October 13, 2015, 09:51:17 PM
You can make a lot more than $1 per hour with TouTrix.

http://toutrix.com/get-paid/?bitcoin_address=13SbVaxLXGtQ1w4VLHqxWNZPeSb6SvZgK4

Read this site, put your bitcoin address in the site, search for good videos and share it on FaceBook/twitter/forum etc.

What is good with this method is when you share, you get paid when a visitor come. It will continue to come hour after hour If it is shared again.

Millions of video ready to share. Just do a search on our website.


is this really work?please pm me about tutor

Well this project pays?What i had saw too short information on main pages,and well i wont try it looks pretty new project soo i will avoid it.Besides signatures only investments or loans can give such value ,but to take 1 dollars hour would need some bitcoins to be able to get those income,soo for who is starting to collect bitcoins it can take around 1or 4 years ,as the income montly .

It seem very small and the page is very vague. It seem like an interesting concept and i would be inclined to try it if there was more groundwork laid out. And it really depend on what kind of Videos pay, because if its just pointless spam ads, then i wouldn't help spread that on facebook.
2755  Bitcoin / Bitcoin Discussion / Re: What kind of service is the actual "Killer App" for Bitcoin? on: October 13, 2015, 09:46:12 PM
I'd have to really think about it to define what the best one would be. I'd say that a app that enables you to get bitcoin in < 10 minutes would probably go big. At the moment acquiring Bitcoin is not as easy as it should be.

But the problem is cellphones are really not very secured platforms for doing such transactions, if you use it through some kind of banking app to an exchange that let you buy BTC with your interact/debit card, then its a lot of personal information you're chugging through with very weak security.

What may work better is an app that let you substitute a BTC payment with a debit payment by going through a payment processor.
2756  Other / Beginners & Help / Re: Can a bitcoin address can be recovered from public key??? on: October 13, 2015, 09:42:47 PM
Holy hell, will people please read replies before adding to the mess?

Short answer: Yes, of course a bitcoin address can be recovered from a public key.  

Longer answer: See replies by pjsonowal.


No it is not. A public key can not be reverse engineered back to its privkey and you cannot actually recover a privkey using bruteforce. It is a mess but if you put information like that, you will just cause confusion, and thus, a mess.
2757  Bitcoin / Bitcoin Discussion / Re: Will the Banking Industry kill Bitcoin and keep the Blockchain? on: October 13, 2015, 09:40:47 PM
You can't kill Bitcoin, as we've seen time and time again. They've tried with technical attacks, and they've tried with trojan horses (XT) but it's not gonna happen. Bitcoin will remain strong and decentralized for life. Every living banker will be dead and Bitcoin will live on. Might as well deal with this. The only banks that will survive will be the pro-Bitcoin ones. Anti-Bitcoin ones will be seen as idiots that missed the point.

If they want to kill Bitcoin, they can by making a super datacenter and overtaking the blockchain. Its not impossible to do, i'm just guessing BTC is not enough of a threat to any government to warrant such a high handed attack against Bitcoin.
2758  Economy / Trading Discussion / Re: What's the best (cheapest) website to buy bitcoin in Canada on: October 13, 2015, 09:34:50 PM
I've been looking at places to buy BTC from a Canadian bank account but it seems every site is riddled with fees in one way or another.

Virwox is more than 10% fee https://caktux.ca/virwox
LocalBitCoins is normally about 3-5% fee
Cavirtex charges a 0.8% fee for trades but also $7.50 to deposit fiat and $10 to withdraw fiat

I feel like I've looked for so many sites but none of them really work.

Ideally I'd love to find a place to buy BTC for around 1% above spot including deposit in fiat and withdrawal in BTC. Has anyone heard of a good place?

Coinbase;
https://www.coinbase.com/accounts/primary

Not much else to say, its instant with interact, you can raise your limit by verifying your identity and the fee is 1%+70cents i believe. Then you can send it back within 24hours to a bank account for 1%+1$.
2759  Bitcoin / Bitcoin Discussion / Re: Ukraine's National Bank Issues Bitcoin Warning on: October 13, 2015, 09:29:07 PM
Ukraine's National Bank has warned against the associated risks that come with digital currencies such as bitcoin.

A statement from the bank dated 1st October, first reported by Ukrainian news site Finance.ua, said it should not be held liable for any losses incurred by consumers using digital currencies to settle transactions.

Instead, it urged banks, consumers and payment organisations to use approved payment systems that guarantee consumer protection
(of course  Roll Eyes )

Full article : http://www.coindesk.com/ukraines-national-bank-issues-bitcoin-warning/

Ukraine, Russie, China and alike "closed" countries hate Bitcoin because it's decentralized currency, they can't control it , and because its anonymity, so they try each period even to don't allow Bitcoin and mark it as "illegal" , or they just send from time to time such warnings

That's right, the government is feel like lose their tummy when they can't control the money.

Well as far as i can see, Russia gov is have a plan to create their own cryptocurrency, based on blockchain technology and China people is have a plan to make a "proposal" to the gov for consider about bitcoin use.

We already know as time goes on Governments will fight BTC more and more intensively. They already are behind the scenes and i'm not particularly surprised that a country such a Ukraine jump on the bandwagon sooner than most.

Well they haven't done more than all of the other countries. They have just issued a warning in dealing with cryptocurrency. That Bitcoin is volatile and that people can lose money much easier than with the traditional financial instruments.

To give them a benefit of the doubt, you can lose your money easier with Bitcoin if you don't know what you are doing.

So I don't think that any government has taken a clear decision to fight us yet. I hope they will not in the future either.

Instead of teaching them how to properly use BTC they are teaching their citizens to fear it. It seem to me that they decided to fight Bitcoin with FUD, which is pretty typical of governments. So i would not be inclined to give them the benefit of the doubt.

My friend, as long as governments don't ban us, we should be happy! We need to think like this literally! Everything else we will work out, it will just take some time! You'll see!

The governments if they get a good reason to attack BTC, could effectively destroy BTC if they wanted. FUD and banning/making it illegal will probably be the least of our worries if they come up with a direct attack.

If BTC become mainstream and easy to use for everyone, seeing the benefits of us and the penalties for the governments, direct attacks may become the truth.

If they stay ambivalent toward Bitcoin like this forever, then sure we'll be fine.
2760  Economy / Computer hardware / Re: [WTS] [EU] [AUCTION]: Alchemist 96 MHs runs 88 MHs on litecoinpool on: October 13, 2015, 09:27:11 PM
Shouldn't this be in the auction section?: https://bitcointalk.org/index.php?board=73.0

auction section description:

Quote
What is the Auctions board for?

Forum description:
Quote
Auctions may optionally be placed in this section. Topics and replies in this section can't be modified or deleted.


reasoning for putting it here, is quite simple, the auction section is a mixed bunch of stuff, while this section contains computers, electronics and mining equipment.

so the right crowd.


But you are auto-moderating this topic...  Huh

nope, if i was, it would say so on the top with a yellowish banner

Basically its just a pain here because people can edit their bid. You will have to have someone trusted doing the quoting or taking a screenshot or such.
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