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2661  Bitcoin / Bitcoin Discussion / Re: If confirmation takes 10 minutes, how will I buy coffee at Starbucks? on: December 12, 2013, 03:37:23 PM
Double spend is a real problem. 10 minutes is intolerable.

It's fairly easy even for non tech-savy people to install 2 clients on different devices and send money during call at the same time.

The one with larger fees will win.

Try it, it doesn't.  The network is far more robust than that. 
2662  Bitcoin / Hardware / Re: HashFast announces specs for new ASIC: 400GH/s on: December 12, 2013, 03:35:33 PM
We're batting 0/3 (maybe 0/4 , was bAsic american?)  with american asic companies. Cointerra most likely missing Dec shipments as well. Merry Xmas...

if all manufacturers miss by the same time-frame it wont matter cause the diff-increase is also delayed

Chinese companies still making chips. Bitmain, avalon. Plus KNC is most likely making their first gen chps for themselves to mine. Don't forget bitfury as well.  Diff will keep rising.

Well the network is ~7 PH/s and KNC two batches in less than two months was >4 TH/s of that.  So the others are shipping but nothing like the volumes of KNC (and volumes planned by Cointerra & HF).  As the network gets bigger it takes bigger and bigger daily volume to keep growing at the ~30% per difficulty.  A slow rollout of 50 GH/s and 100 GH/s rigs isn't going to move the needle as much anymore.

Still HF customers had better pray that Cointerra is delayed at least 30 days after HF ships as that is another 2 PH/s that originally was going to be months and months after HF delivered and now could be roughly the same time.   Still even if Cointerra is delayed, batch 1 HF customers are still screwed as originally Batch 1 was Oct and Batch 2 was Dec.  That provided a nice gap between the 0.5 PH in batch 1 and 2.0 PH/s in batch 2.  Now essentially there is just one massive >2.5 PH/s batch.  Sure batch 1 customers might get their units a few days early (at 2x to 3x the cost) but when HF ships difficulty is going to explode upwards.  So either HF doesn't ship in which case batch 1 has no hashpower or they do ship in which case their difficulty is going up another 35%+.

To put it into perspective to produce the same amount of Bitcoins per day requires:
400 GH/s on Nov 1  (Original Batch 1 delivery date even padded 10 days)
908 GH/s today (if HF's BabyJets output 908 GH/s customers would be no better than getting 400 GH/s on time)
1,040 GH/s on Dec 31 (this assumes HF batch 2 is delayed 30+ days after batch 1 so it doesn't blast the difficulty)
1,352 GH/s on Dec 31 (w/ back to back delivery of batch 1)

This also assumes no more shipments from KNC this year and that Cointerra will be delayed 30+ days and the rest of the players continue their slow rollouts with no massive surprises (as in stepping on a landmine kind of surprise not a you just won the lottery surprise).

So pretty much at this point if HashFast converted all BabyJet's into Sierras and they were overclocked 15% it wouldn't be so massive bonus it would only be enough hashpower to give what was promised for Oct delivery.  Now is HF going to do this?  No but it illustrates just how screwed Batch 1 customers are.   Even IF HashFast upgraded all Batch 1 orders to Sierras, delivered all of them before 31 DEC, AND the chip operated 15% over spec, that would only be as good for Batch 1 customers as getting what they actually ordered on time (Nov 1).



2663  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: December 12, 2013, 03:26:01 PM
I switched to ghash.io, and immediately my HW errors dropped below 1.5% on all machines and have stayed there. Bye bye eligius I suppose!
Anyone have a good starting point for the difficulty setting with ghash? I'm at 256 right now.
I confirm that. Switching to other pools changes hardware error rates shown by cgminer from 14% to 1.6%.

I've performed a long test with Eligius, writing down all cores numbers turned off and on. The turning off starts not immediately but after a dozen of minutes.
The cores turned off are purely random. Then cgminer turns them on (one by one). They are still randomly turned off.
(Experimental "tuning" version of cgminer 3.8.2 is no better.)

It looks like something (a config string or data sent from Eligius) causes something wrong (like buffer overrun) with November miners,
making cgminer working erroneously, especially spoiling random nonces (what in effect degrades effective hashing rate and causes cgminer to turn off good cores gradually).

(It doesn't always happen - maybe it depends on which server at Eligius it connects, I guess.)

Agreed I observed the same thing with HW error % reaching 28% on Eligius and without even a reboot dropping to <1% on bitminter.  I have no idea how a pool can cause hardware errors (or even make cgminer think a hw error has occurred) but it is easily observable if KNC wants to point a Nov unit at Eligius to verify.

Also KNC please subtract HW errors from the hashrate.  You have good hardware you don't need to pad the numbers.   If someone made a rig which was 83290 GH/s with 100% hardware error rate which do you think should be the reported hashrate 83290 GH/s or 0 GH/s?
2664  Bitcoin / Hardware / Re: HashFast announces specs for new ASIC: 400GH/s on: December 12, 2013, 03:21:17 PM
The BJ we will receive by the end of the month will get us 8 BTC each in an year. Power costs are not considered. I also assume that we start mining at the first day of Jan.
http://mining.thegenesisblock.com/a/019aee662b

That's, exactly as i predicted, less than 1/5th of our initial investment. Then comes the MPP. I'm optimist today and i assume that we are mining with it the first day of March. The total return of the MPP (fully triggered) would be around 9 BTC.
http://mining.thegenesisblock.com/a/4156b31fef

9 + 8 = 17 BTC out of the 40/50 we spent.

Also to put it into perspective 400 GH/s devliered 1 Nov would have net ~10.8 BTC for the month of November and another ~6.8 BTC for the month of December.  Had they actually shipped earlier it would have been an additional 0.5 BTC per day before 1 Nov.
2665  Bitcoin / Legal / Re: Possibly dangerous tax situation when mining in US on: December 12, 2013, 07:58:34 AM
Registration is easy.  Compliance is the hard part.  Registering with no intent on complying with the Bank Secrecy Act is just stupid.  It is like saying "I know what the law requires and I am just going to ignore it anyways.  Anyone have a problem with that?".
2666  Bitcoin / Hardware / Re: HashFast announces specs for new ASIC: 400GH/s on: December 12, 2013, 07:53:58 AM
1 J/GH at the wall?  I really hope they can do better because after the delays and broken promises.  1 J/GH would be unimpressive.

Yeah I know they say +/- 20% but that means 0.8 J/GH to 1.2 J/GH and that is what KNC is already getting.
2667  Bitcoin / Bitcoin Discussion / Re: All this mining is ultimately meaningless on: December 12, 2013, 07:06:09 AM
They aren't useless the secure the network.

If you decide to open a bank so you pay a contractor a lot of money to build a secure vault, and then you install lots of cameras, pay for an alarm system, and hire security guards .... and then the bank never gets robbed (maybe because the security is too tight) was it a waste of resources? 
2668  Economy / Speculation / Re: The Bounce is Official on: December 12, 2013, 07:03:00 AM
There is just a slight difference compared to Bitcoin. In Bitcoin you got less than 1000 people holding more than 50% of all bitcoins.... None of the assets above have such an unequal distribution of wealth.

Not sure if you are just spreading FUD or you just don't know any better.   You have 1,000 addresses holding 50% of the currently mined Bitcoin.   MtGox for example is one of those addresses and they had at least at one point 220,000 registered users.  That is just one example.
2669  Bitcoin / Hardware / Re: HashFast announces specs for new ASIC: 400GH/s on: December 12, 2013, 06:57:09 AM
A motherboard with the complete 400 amp power supply

That's gotta be one really big power supply! I wonder if all 400 amps are on a single +12V rail.

400A @ <1 Volt.  Simulating the output of the voltage regulators.  The chip will probably be running at 0.7V to 0.9V so a 240W to 360W bench power supply.  Unlike an ATX power supply it will be adjustable.
2670  Economy / Speculation / Re: SecondMarket Bitcoin Investment Trust Observer on: December 12, 2013, 05:44:40 AM
Only 30XBT bought with 200k$. After the Chinese news and weekend crash people are sitting on the sidelines and watch

No bitcoin bought yesterday. The 30XBT is just rounding error. After the Chinese news and weekend crash people are sitting on the sidelines and watch

I can check the offering docs but IIRC the min investment is $25,000 not $250,000.  So it could be one small investor.
2671  Economy / Speculation / Re: when will bitcoin's market cap surpass gold's? on: December 12, 2013, 05:23:25 AM
so i've been thinking about this and i'm fairly confident gold will plummet back down to 200 or so soon.
let's make predictions
2018?

The non stop printing presses will ensure gold doesn't go below $200 an ounce ever.  Hell it might go to $100,000 per ounce although $100,000 someday might be low enough to qualify for food stamps.  The dollar has lost 99.2% of its purchasing power in the past 80 years.  That trend isn't slowing down.
2672  Bitcoin / Bitcoin Discussion / Re: Fidelity Now Allowing Bitcoins In IRAs on: December 12, 2013, 05:18:39 AM
One important point to consider is that while Fidelity will allow investing in the Bitcoin Trust, the Bitcoin Trust is limited to accredited investors (>$1M in assets or >$200K annual income or a few other conditions).  So grandma (unless she is an accredited investor) won't be using this even if she has a Fidelity brokerage account.   Still it should help the Bitcoin ETF convince regulators of the need and merit for the ETF.
2673  Bitcoin / Bitcoin Discussion / Re: Bitcoin "bumper sticker" mottos on: December 11, 2013, 11:44:02 PM
Quote
I am Satoshi Nakamoto
  <- I actually want this.

Quote
You asked for change, we gave you coins.
<- not mine

2674  Other / Beginners & Help / Re: getting into development on: December 11, 2013, 11:40:38 PM
why bitcoin I am not able to withdraw the automatic? how to withdaw  the manual?

Probably because bitcoin found out you were posting in other people's threads and removed the automatic.
2675  Economy / Speculation / Re: Bitcoin on cover of time magazine on: December 11, 2013, 11:37:56 PM
What color?  Yellow?  Yellow would be awesome, then again any lambo would be awesome.
2676  Bitcoin / Bitcoin Discussion / Re: Why should I use Bitcoin instead of Paypal? on: December 11, 2013, 11:29:07 PM
I am considering writing an article of the advantages of Bitcoin over Paypal. Answering the question "Why should I use Bitcoin instead of Paypal?"  This will serve to help the undecided to take the plunge.


So, why should I use Bitcoin instead of Paypal?

1) Lower fees.  Please don't say Bitcoin is "free" but it is very low cost.
2) Less chance of fraud.  No wondering if your buyer can be trusted, if he is using a hacked account, if you are going to get a chargeback.
3) No central authority.  Ever had a PayPal account frozen for 30 to 180 days.  Your money but you can't spend it or even withdrawal it because PayPal says so.  No appeal, your funds are just held hostage because it is their network.  That can't happen with Bitcoin.
2677  Other / Beginners & Help / Re: My first post - spend hours to understand Bitcoins - still have some questions on: December 11, 2013, 11:25:24 PM
1) I found out that the website www.bitaddress.org is the most simple way to generate a bitcoin address and a private key. However, it's a website accessed by the internet and by using a web browser, using an operating system. From my mind, the most secure way of generating bitcoin addresses with the private keys, is on a standalone computer, with no internet access and without any wifi/bluetooth adapters in it. Is there a way to generate my own bitcoin addresses with private keys on a standalone computer ? After that I will print out all the output to paper and destroy the standalone computer.

All of the generation is done client side.  You can (and probably should) save a copy transfer it to an offline computer (or disconnect the computer from the internet) and generate your paper wallet.

The generation doesn't require any internet access.  Destroying the computer is likely overkill.  As pointed out if ultra paranoid make a Linux Boot OS on a Live CD and include the (offline copy ) bitaddress webpage.

Boot, generate, power off.
2678  Other / Beginners & Help / Re: offline wallet address and checking balance on: December 11, 2013, 11:20:44 PM
Yes and Yes.

Same thing applies to paper wallet even if the address was generated offline.  You only need to be online to send coins not receive them.
2679  Other / Beginners & Help / Re: Why do they call it difficulty on: December 11, 2013, 11:18:37 PM
If you were mining in 2009 and still mining today with the same hashing power the average time to solve a block has increased by a factor of almost one billion.  If that isn't "difficult" then I don't know what is. Smiley

BTW I perform all my hashes by hand so that is a lot of pencils and paper.
2680  Bitcoin / Hardware / Re: Which preorder? KNC 3TH Neptune VS CoinTerra 2TH TerraMiner IV on: December 11, 2013, 10:59:42 PM
i dont see the point of considering hashfast, it has a delivery date at end of march which is similar to cointerra, cost almost 2x as much, and seem a less organized company than the other 2.  Am i missing something?

In that case either they will need to cut prices or they won't sell units.  Honestly for delivery that far out all three have insane prices.
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