Cryptocurrencies

What cryptocurrencies do you use/own?

  • Bitcoin (XBT)

    Votes: 30 27.8%

  • Ether (ETH)

    Votes: 16 14.8%

  • Litecoin (LTC)

    Votes: 15 13.9%

  • Peercoin (PPC)

    Votes: 0 0.0%

  • Dash (DASH)

    Votes: 3 2.8%

  • Dogecoin (XDG)

    Votes: 4 3.7%

  • Blackcoin (BLK)

    Votes: 0 0.0%

  • Zcash (ZEC)

    Votes: 3 2.8%

  • Other

    Votes: 14 13.0%

  • None

    Votes: 69 63.9%
  • Total voters
    108
Those are a NICE find @NviGate Systems ! Have you used them yet? I thought of an Atom system before, but never found anything really cheap. You know, this setup, you could possibly mount them alternating 1-up, 1-down. Have the video cards pulling air from a central location, and then 1 120mm fan blowing through between them...
 
I'm not sure 100% how I am going to mount them. I was toying with the idea of hanging the boards like you would on a laundry rack. Then they would use very little space. The risers would then go up to the next level of the mining cube. Nice thing is they are PS/2 Ready which means I can use an older KVM.

They shipped out this morning. I most likely will get them late next week or early week after.

I will need to source adapter tips though. That's not a huge deal as I do have lots of 12V 4A adapters, I just need to get the right tip.

As this is my first foray into mining there are things I will learn by mistake, but I do like the idea of low power systems one per card to get Max hash rate.

Plus, in event of card or board failure it's like a raid, several failures won't kill the system unless it happens to be PSU but that is another story.

I'm tempted to use Linux on these bad boys. Just not sure what that will entail as far as support and remote access.
 
Blues said:
@timeshifter Have you tried swapping the cards between the rigs to see if a given card shows the same lesser performance when moved to the rig with only 1 GPU?
Click to expand...
No, because I could make a fast card slower and a slow card faster by switching which card had the display plugged in. i.e. I think I determined that having a display connected is what caused the issue.

However, I think being connected to a PCIe 16x slot with a display connected didn't harm it, as that's the way it's setup on ROCKETSHIP.

I think I'm going to experiment some more over the weekend. It's been super hot here and I'm a little worn out from the week right now.
 
GOLDMAN SACHS: Bitcoin may need 'another few swings' before making a run at record highs

Article Link: http://uk.businessinsider.com/bitcoin-price-goldman-sachs-technical-analysis-2017-7

The cryprocurrency's inability to breakout above its June 13 high of $3,000 suggests it is forming a triangle pattern that could see as many as five swings, and a low of $1,786, Jafari writes.

But fear not, says Jafari, because a run at record highs is in the cards as bitcoin remains in the fourth wave of a five wave series. "Anything above 3,000 (Jun. 13th high) will suggest potential to have already started wave V, which again has a minimum target at 2,988 and scope to reach 3,691 (the latter being a preferred target as this assumes a new high.)," Jafari wrote in a note to clients sent out on Monday.

So far Jafari has been spot on in her analysis. In early July, Jafari suggested bitcoin wouldn't fall too far below $1,857. It fell to somewhere between $1,758 or $1,852 (depending on which data you use). A few weeks earlier, Jafari predicted a big drop was coming after bitcoin hit $3,000.
Click to expand...

DdVXKoV.png
 
To reply to the Trezor questions...

Yes, it supports multiple wallets. Bitcoin, Dash, Zcash, Litecoin, and Ethereum. The first four are baked in. ETH they partnered with MyEtherWallet, you need to authenticate through them, but I understand it as just a holder, it doesn't hold the private key since that would defeat the purpose of Trezor.

You use the device itself through their web interface. Trezor.io -- again, you have a PIN in addition to the recovery seed. That pin is obscured on the webpage... it's just a punch of dots. Those dots correlate to numbers on the Trezor itself. You match numbers to dots and type in the proper pin. This changes each time you interface with it.

Hope that helps. :)
 
Moltuae said:
You could try Zcash on Flypool. Everything you need is on this page: https://zcash.flypool.org

I found it slightly more profitable than NiceHash. Haven't tried mining Ether directly yet ...
Click to expand...
OK, so I'm trying this now. I got the EWBF miner and installed the Mac wallet app.

I downloaded the Mac wallet app for Zcash because it seemed like the easiest way to get started. However, I'm not really sure I understand what I've got. With Bitcoin I've got a couple of addresses. I don't run any software to have those. They just exist. I've got the public address and the private key for each - they're just strings of text.

But now for Zcash I've got this app running on my computer. Once I installed it I had a Zcash address.

zcash4mac.png

A few questions:
  1. Does this program need to be running when I get my payments from the pool? (I don't think so, I think it just reads the data from the blockchain to figure out my balance)
  2. Speaking of the blockchain... Will my Mac have a full copy of the Zcash blockchain? It's 18.94% synchronized in the screenshot.
  3. Can I extract the private key from a data file somewhere if I don't want to rely on the wallet?
 
Usually these types of wallets require you download the block chain. If you don't want this then you can try a light client (much like Mycelium for BTC) which I run on Android and it doesn't require full synchronization.

The wallet doesn't need to be open, it will sync with the block chain and get your funds.

------------------------------

Off topic but my 6 MINIX board were delivered today. When I go back to work tomorrow I will have a chance to see what connector they require and perhaps get one or two setup. :)
 
@timeshifter I'm not familiar with that wallet (or Macs) but it looks like a 'full-node' wallet. If you don't mind waiting for blockchain synchronisation each time you open it, a full-node wallet is the best type of wallet to use. In addition to holding your private keys, a full-node wallet downloads and verifies the entire blockchain, meaning that you do not need to 'trust' any other network node. It also means that you're helping to run the network. As NviGate says, you could try a 'light' wallet if you don't want to have to wait each time. I use both types of wallets for any cryptocurrencies that I own larger amounts of: A full node wallet (in a VM that I keep offline most of the time) for the majority of the funds and a light wallet for smaller amounts. You can think of a full-node wallet like a bank account (somewhere to store the majority of your funds) and light wallet like a real physical wallet. In that respect, it would be wise to hold no more funds in a light wallet than you would a real wallet, especially if you're going to carry it with you on a mobile device.

With most wallets, there's usually some sort of private key and/or wallet file that you can copy and backup. Many wallets are 'deterministic' and use a 'seed' (in the form of a dozen or so random words) to generate a unique private key. The private key is then in turn used to generate numerous public addresses. With these type of wallets, as long as you have the seed you can regenerate your private key from it.

In all cases, your funds are just data on the network. A wallet simply allows you to view that data and the private key proves ownership, allowing you to request new entries into the blockchain ledger that result in the transfer of funds. So, nope, you do need to have any wallet open to receive funds.
 
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@Moltuae thanks for that explanation, that helps.

I did find a menu option to export keys. Also now that the blockchain is 100% synchronized. I checked the folder size: 5.9GB :D
 
Did some preliminary testing of the MINIX boards. They work great! Tested a riser, and video output is good. The first card I tried didn't work (cheap old PCI-E card ) but a high end card posted OK.

I have to adjust the space between the boards as there is not enough room to connect the risers. Small thing but important. Next, I'm on the hunt for a remote switch I can activate to reset units physically if need be. I've seen a few on Amazon.com but nothing in Canada. Very important if I want to remotely kickstart a system that has crashed.
 
Bitcoin Price Reacts to SegWit News

Article Link: https://cointelegraph.com/news/bitcoin-price-reacts-to-segwit-news

Yesterday, July 27, the signaling stage about the Segregated Witness protocol, SegWit, BIP 141, was activated.

The protocol will be fixed, if at least 95% of the blocks - 1916 out of 2016 - signal at this stage in support of SegWit. In turn, this will provide the conditions for activating the scaling BIP 141 offer.
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SKRlYQm.png
 
What Every Bitcoiner Should Know About 'Bitcoin Cash'
Article Link: https://news.bitcoin.com/what-every-bitcoiner-should-know-about-bitcoin-cash/
In a few days the notorious August 1st is approaching, and it’s likely this day will be remembered for a long time. This week Bitcoin.com discussed the possible scenario of a user activated hard fork called “Bitcoin Cash” as much of the community doesn’t realize this fork will likely still happen despite Segwit2x’s current progress.
Click to expand...


Bitcoin Cash: Why It's Forking the Blockchain And What That Means
Article Link: https://www.coindesk.com/coindesk-explainer-bitcoin-cash-forking-blockchain/

The Future of “Bitcoin Cash:” An Interview with Bitcoin ABC lead developer Amaury Séchet
Article Link: https://bitcoinmagazine.com/articles/future-bitcoin-cash-interview-bitcoin-abc-lead-developer-amaury-séchet/


More info/links:
https://bitcointalk.org/index.php?topic=2040221.0
https://www.bitcoincash.org/
https://coinmarketcap.com/currencies/bitcoin-cash/
 
Need help.

Z170a sli plus board
Windows 10
6 1080 cards
1200w ps

Tried every setting and can only get 5 cards to show. No matter what can't get a 6th.

What I tried
New risers
New power
Different cards. Unplug one that does work and plug in the one that doesn't and it shows 5

What else can I try. Pulling my hair out.
 
One pcie slot may be shared with SATA, m.2, SATA express. Try booting to USB and disabling all unneeded features in bios.

Sent from my ONEPLUS A5000 using Tapatalk
 
MudRock said:
One pcie slot may be shared with SATA, m.2, SATA express. Try booting to USB and disabling all unneeded features in bios.

Sent from my ONEPLUS A5000 using Tapatalk
Click to expand...

I did try and disable all unneeded. Also I tried switching slots and it still will only show 5. Like remove pci6 and it showed 5. Temoveved pci5 and put it in pci6 and it showed 5.

Are you saying if I disable m.2 it will make one more pci available.
 
6 x 1080 is pushing it a bit for a 1200W PSU is it not? What power level are you running them at? You may need a 1600W PSU for that lot.

This is the one of the reasons I'm sticking with smaller 4-card rigs now. Motherboards with 4 x PCIe are cheaper and more readily available too. Ended up pulling my hair out with every larger rig we built. Haven't got much left to pull out now so I'm keeping it simple.

I haven't done a 6 x 1080 rig but most of the problems I had with the 6 card rigs we built were down to either the BIOS, the driver version, witchcraft, or a combination of all 3. I would check you have the latest BIOS version and try a different (later/earlier) driver. There are known issues running multiple cards with certain drivers. I guess manufacturers never envisaged people would be running 6 or more cards in a single PC and never properly tested that scenario. The witchcraft fix that worked for me on most occasions was simply to start back with a single card, adding one at a time. Make sure each card is properly working/benchmarking before adding the next. You may find that for no apparent reason they all work when you add the last one. Sacrificing a goat may help too.
 
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