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1  Bitcoin / Group buys / Re: Ninja Group Buy - Antminer Hosting Space - Upgraded S1-S3+ .525 btc - $45/mo on: December 05, 2014, 02:21:12 PM
This is nearly all sold out, there are maybe 5 spots left total.
2  Bitcoin / Group buys / Re: [CLOSED] Ninja Group Buy #6 9TH 28nm Hosted - 250GH for 1.666btc [0/40] on: October 16, 2014, 05:27:37 AM
Buyback completed here: https://blockchain.info/tx/fd0cd829af14ccb7c0f778c3fff42894f8db481a6cb6cd2b7a6677337a548e8f

Happy to ship you (or your ebay buyer) hardware, just refund the buyback and pay the shipping. We haven't seen hardly any demand trying to sell them off, best offer I have gotten so far is $500 per unit. Maybe you'll have better luck.

3  Bitcoin / Group buys / Re: [CLOSED] Ninja Group Buy #6 9TH 28nm Hosted - 250GH for 1.666btc [0/40] on: October 03, 2014, 05:54:46 PM
PM sent time to wrap this bad boy up.

Agreed.  I'll post shipping label instructions later today.  These unit will ship out on Wednesday (we're headed to inside bitcoins for the first part of next week).

Options are going to be as follows:

1. Owners with Multiples of 4 shares -  Send a shipping label and take the hardware. Details on dimensions/weights to be posted later today. The $99 NOC fee is waived for those that prepaid hosting.
2. Buyback at market rate of the hardware less $99 NOC fees (will be waived for those that pre-paid hosting).  Currently around .2/BTC per share, but will be calculated Wednesday when the buyback completes.

A final payout will go out Wednesday and the machines will be pulled offline at that time. 
4  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: [CLOSED] Ninja Group Buy #5 - QTY 8 Gridseed LA6M 48Mhash Scrypt [0/160] on: September 20, 2014, 03:59:17 PM
Upgrade kits for our S1's have arrived; now waiting on a large order of thermal grease.  I'm expecting that we will have them upgraded on Monday.

No time to work on the stats page at the moment, busy building out a new warehouse and upgrading 100 S1s.  I've been testing Nicehash/Westhash and the results look good, once the upgrades are done I will move the miners there and anyone can get the stats based on our payout addr.
5  Bitcoin / Group buys / [CLOSED] Ninja Group Buy - Antminer Hosting Space - Upgraded S1-S on: September 14, 2014, 07:12:00 PM
We have upgrade kits on the way.  We have a warehouse space rented.  We're on the cheapest utility in Arizona and headed into winter rates. We have a unique heat containment cooling solution that works great for these small warehouse mines.  We have room on the power panel for 120 Antminers total - Well be running 4 -  3 phase 60 amp circuits, and we'll be pulling just under 200amps continuous power once cooling is factored in.  Broadband to be provided by Cox, with a 3G backup dongle on the router. Security by ADT, plus cameras, and multiple levels of locks.

We're building the mining room starting today. I'm on my way to home depot to get materials. We're offering the remaining capacity of this operation to members of Bitcointalk as a group buy. There are exactly 120 spots, of which 80 will be sold here (40 pre-sold before the offering). Your miner will go live as soon as our upgrade kits arrive and we get them done and installed, orders will be processed in the order received. As with anything we offer now, you have full control of the mining hardware via our innovative Mining as a Service (MaaS) interface.  We don't touch your earnings ever as you choose the pools.

Each Group buy member shall receive:
1 Mining Space for 1 AntMiner S3 or Miner of Equivalent form factor/power consumption.
1 Antminer S3 (upgraded S1 to S3+ using kit)
1 500W Lepa Power Supply rental (or similar, may use other supplies for owners with multiple miners).

Monthly Fees: $45 (.095btc) per miner/per month, with a 6-month initial term, month to month after that.  First month and last month included in the upfront payment. Send us a shipping label anytime after that and we'll send back your miner. Simple. Cheap. Reliable.
The mining space is reusabe, so you could also switch to an L1 in December. 2nd Month payment will be due 30 days after mining commences.

Miner Cost: .525 BTC
Hosting (First and Last month): .19BTC
Total:  .715BTC

Payments go here and nowhere else: 1NiNJAGi1k51pfxKsQQQisf3MMwsPU5yCc I won't contact you via PM unless you initiate the conversation thread, and will always quote our conversation.  Anyone messaging you otherwise is a scammer. Make sure you control the address you pay from of course so we can always verify who we are dealing with for your own protection.

6  Bitcoin / Pools / Re: Bounty for the confirmation that stratum modification works on: September 04, 2014, 09:43:21 PM
And if you're not on a PPS pool trying to sabotage it, what is the reason one would want to do this? Yes it does withhold blocks, but virtually every pool does not use pps and you stand to lose btc by performing it on them.

You still get paid when someone else in the pool finds a block, basically you are sabotaging the pool for your benefit only.  The reward is certainly lower and it hurts everyone mining in that pool; but the side effect is that your hashrate will NOT increase the difficulty as it's not contributing to the actual block discovery rate.  A party with a large hashrate can thus over time potentially realize more income by stealing from pools using this method, as the hashes he is contributing don't increase difficulty. 

Possible Solution
When a pool finds a block, transmit the successful nonce to other miners in the pool.  The miners that don't respond with a valid block are cheating you...and thus their account should be locked from future payouts.
7  Bitcoin / Pools / Re: Bounty for the confirmation that stratum modification works on: September 04, 2014, 09:32:09 PM
Here's the relevant bit of code, I've commented it to make it understandable

# if we found a solution that is less than the current difficulty
 if ntarget >= utils.uint256_from_str(hash_bin):

            # write the log that we found a block
            log.info('Found block: %x' % utils.uint256_from_str(hash_bin))
     
            # now we do something nefarious, but not universally as that would make it easy for the pools detect
            # randomly based on a probability argument (set on command line) withold the solution
            if random.random() < self.witholding_probability:
                log.warning('Witholding this block (p = %f)' % self.witholding_probability)
                return False


The cool tricky part is the attacker can just claim bad luck, as they aren't withholding all the blocks they find, but just a percentage.   
8  Bitcoin / Mining / Re: Renting bare metal miners from a company (month to month) on: September 04, 2014, 09:16:15 PM
This is how our NinjaCloud works. You can lease for as little as one day up to six months, and you are given control over the miner.
9  Bitcoin / Hardware / Re: ANTMINER S3 Discussion and Support Thread. on: September 03, 2014, 08:49:09 PM
Does anybody have the commands for installing nano on the s3 by putty?
Tried "opkg update" and "opkg install nano" but get errores on the first already



The repository in /etc/opkg.conf is incorrect, so it doesn't have any packages to install.  However even if you fix that (add /base to the path), there isn't a precompiled nano package for this openwrt variant. I suggest learning some basic vi skills, as it's the lowest common denominator in the editor world (any *nix machine will have vi).
10  Bitcoin / Mining / Re: Cloud mining allowing you to use any pool? on: September 03, 2014, 08:39:55 PM
We're priced slightly below the expected returns during the beta period to encourage users to test/break the site.  Nicehash is paying .0217btc per TH/day right now, so you could theoretically make a small profit there, or your pool could get lucky and you could see great returns for the day. The best value of course is on a 6 month lease.

Or maybe you have some bitcoin you don't like (for whatever reason) and want to get some new fresh mined bitcoin in return. What better way than to mine some in the cloud?
11  Bitcoin / Mining / Re: Cloud mining allowing you to use any pool? on: September 03, 2014, 07:27:33 PM
15 overclocked S3's are currently available to rent on the NinjaCloud.  Rent is all-inclusive of power, management, internet everything. No further fees apply.

Prices:
1 Day .01033 btc
1 Week .06795 btc
2 Weeks .14175 btc
1 Months .27869 btc
6 Months 1.465 btc

You choose the pools, and we never touch your bitcoin earnings.  Please PM for an invite as the project is in closed beta. We have a great uptime record, being hosted in an N+2 redundant facility.
12  Bitcoin / Group buys / Re: [OPEN] Antminer S3+ 1 Share = 40ghs/0.05Btc on: September 03, 2014, 06:07:59 PM
Be really careful guys.  Check the OP's post history; it seems he has lost the mastery of the English language sometime between the beginning of August and today.  And there's been a big leak of user accounts/passwords recently....hacked by a scammer?
13  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: [CLOSED] Ninja Group Buy #5 - QTY 8 Gridseed LA6M 48Mhash Scrypt [0/160] on: August 26, 2014, 09:32:52 PM
We're on ghash for now, I'll get a stats page up for everyone later this week.  I've started also experimenting with nicehash/westhash, and will probably add them to this group shortly as well.
14  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: [CLOSED] Ninja Group Buy #5 - QTY 8 Gridseed LA6M 48Mhash Scrypt [0/160] on: August 22, 2014, 03:21:24 PM
Well be hashing starting tomorrow when I pick them up and get them configured.  Ghash autopayout keeps complaining about payout addresses, so it looks like it's not going to work anyways. I'm open to using any multi-pool, leasing, anything to get us the best return. 
15  Bitcoin / Group buys / Re: [CLOSED] Ninja Group Buy #6 9TH 28nm Hosted - 250GH for 1.666btc [0/40] on: August 21, 2014, 08:12:25 PM
Dividend payment sent; 6 weeks remaining.

Datacenter mining is great when you have the newest, most efficient miner.  Once the equipment ages the margins get too tight and we end up upside down on the hosting.

We're working on a new low cost solution, which won't be nearly as reliable as being in a datacenter - but will have significantly lower costs overall. The first prototype NinjaPOD should be coming online right about when this group finishes up. We found a home for the first batch of NinjaPODs in a part of Phoenix that has lower priced electric utility; downside is that it's an hour away.  Pricing is TBD until we finish up the engineering and figure out how low of a PUE we can obtain. 


Stay tuned...
16  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: [CLOSED] Ninja Group Buy #5 - QTY 8 Gridseed LA6M 48Mhash Scrypt [0/160] on: August 21, 2014, 07:30:12 PM
Ok here's what I have put together for this group's expansion:

3 Antminer S1's - $125/each
1 1200 Corsair Power supply - $200
3 Antminer S3 Upgrades = $241/each

Total: $1298

The remaining $200 is being witheld to help offset our power costs to date, so far we haven't withheld anything, despite our cost basis changing when we lost the original location.  Also I donated my remaining personally owned gridseeds to the group as well, and took zero compensation for them.

We will set-aside 20% of the group's hashrate to pay the $200/mo power bill for our operation.  Next power bill will be due October 1st; if it starts to look like we are going to come up short on power we will adjust the set-aside percentage.  Everything will be set on auto-pay from Ghash.io, so payment will occur as soon as the .1 threshold is met.  We're picking up the S1's this weekend, and will get them installed ASAP.  We have a very low power cost for the next 9 months (though its limited to about 2500 total usable watts), so I expect this group to thrive for quite some time.
17  Bitcoin / Group buys / Re: [BONUS] Ninja Group Buy - Ninjacolo.com mining cloud beta test 30GH contract on: August 20, 2014, 06:17:19 PM
Looks like they added a payment threshold field. I've set that to .1 so we should see a payout on the next cycle.

Is there something wrong with the ghash auto pay outs? Last payment was more than two days ago.
18  Bitcoin / Group buys / Re: [interest check] Group funded Co-location in ohio 0.02-059/kwh & petahash farm on: August 19, 2014, 06:13:57 PM
Transformers, power distribution, and wiring is going to cost more than the total of your current estimates.  It's not cheap to build a megawatt facility.
19  Economy / Service Announcements / Re: [NINJA] NinjaCloud Bitcoin Mining Cloud Beta on: August 18, 2014, 09:52:43 PM
Scrypt and X11 have now been added to the cloud.  We're still invite only for a few more weeks while we sort out deployment environment, so please send a PM for an invite.  With the recent drop in BTC prices, you can lease an Antminer S3 for 6 months for just under $750USD. 

Currently available: 9 Antminer S3s
                           1-2 Jupiter based KNC rigs (these get a lot of rentals)
                           1 A1 based scrypt miner
                           1 6 card 290x X11 miner

100% uptime guarantee, any downtime will be compensated with additional hashes/lease extension. 

We will be exhibiting at Inside Bitcoins in Vegas this October 6-7, please come by the booth and say hi and register to win some cool prizes.
20  Alternate cryptocurrencies / Marketplace (Altcoins) / Re: [CLOSED] Ninja Group Buy #5 - QTY 8 Gridseed LA6M 48Mhash Scrypt [0/160] on: August 17, 2014, 02:37:10 PM
I'm working on something with some S1's that would start hashing next week (undervolted), to be upgraded to S3's when the upgrade kits ship.  Fingers crossed on this deal.
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