I would have serious doubts that bitstamp even runs one single full node of their own ... probably outsourced.
you *seriously* beleive that a major bitcoin exchange does not operate thier own node? Something that can be achieved for <$100 with a standalone device and uses <64GB of storage? get real. you can buy a 1TB harddrive for $50 today and store BIP101-enabled blockchain onto it for years to come. then pay $50 more for a 4TB drive to handle a few more years of growth. or are you still using the same computer you owned in 1999 with its 1.6GHz singlecore, 512MB ram, and 60GB HDD (all cutting edge)? |
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interested, mostly from a collector POV, since it sounds like each unit has some serious issues but might be somewhat repairable/salvagable.
Im located in toronto, Canada. if you could provide some idea on shipping costs i might place an offer of 0.8-1.0BTC *shipped*
I think shipping to Canada would be cost-prohibitive, as they'd have to travel in either a fairly large box or multiple packages. UPS's website is down for me right now anyway, but the other major couriers are showing at least US$90. default USPS migt be cheaper? |
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interested, mostly from a collector POV, since it sounds like each unit has some serious issues but might be somewhat repairable/salvagable.
Im located in toronto, Canada. if you could provide some idea on shipping costs i might place an offer of 0.8-1.0BTC *shipped*
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Why couldn't you use a cheap adapter like this: http://amzn.com/B00AKXE59E for ethernet? If purchased in bulk for hardware application, surely you could get pricing <$1. I wonder if there is a mini HDMI-to-USB adapter (if that is even possible). HDMI port is useless for mining, otherwise. AS far as micro usb to Ethernet-it does not make much sense to me because there are only two micro USB ports there with one dedicated to Power as far as I understand (maybe it cannot do data?), which leaves just one micro USB available for data. I assume you would want to connect micro USB (m) to USB (f) adapter there, then hook up a usb hub, THEN connect a usb to ethernet adapter to that hub. I am not sure that this concoction would work, but it might, however all these adapters would reduce the appeal (since raspberry pi B+ could be had for $19.99 with all connectors already present). However, that tiny thing looks appealing just for trying it out. I think this is dead-on. $5 for the RPI-0 (currently sold out) $5 for a cheap OTG micro USB (m) to USB (f) adapter with at least 2 USB ports $5 for a cheap USB-ethernet or $10 for a USB-wifi adapter you are looking at $15-20 total. not too bad, but it brings the cost closer to simply buying far-superior RPI 2 for ~$50 |
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would love to know an approximate shipping cost to toronto, Canada. Assuming its <$20:
ill bid 0.08 BTC
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Although I initially saw the lightbulb as a gimmick, I read now some documents regarding Lifi. If there would be a combination of an ASIC with an Lifi-device, I think this could boost. In shopping-malls, for example, are thousands of lamps, i.e. this would mean that you would be mining during business times. So after all, I think this could become a very interesting project.
why would you install hundreds of wifi/lifi-dependent lightbulbs when you could use the 'normal' kind and instead buy a dedicated multi-terrahash bitcoin miner? |
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This i my ROI point of view: This calculation is based on the fact that you have the money to pay for the miner package + hosting for a year, on hand, so that the alternative is to buy coins instead of mining gear for that amount of money. Calc inputs: Difficulty increment: 4% #I seriously doubt it will be below 4% on average. Pool fee: 2.5% #Based on Ant PPS. Even if you are mining on 0% fee PPLNS. You can't expect more than 98% luck on average IMO. Hashrate: 3500 #Based on 3650TH/s -4%. They have stated +/- 5%, lets try to be realistic. Hardware price: 1436$ (Ex. hosting/PSU rental) Hardware price in BTC: 4.373 Watts: 1000 Start date: 11-30 Maintain cost/month: ~58$ #Based on 0.0661$/KWH aka hosting, and 10$/month PSU rental url snipped Seems like you will never earn back the amount of BTC you put into this. Miner cost + 1 year hosting = 1436 + 696 = 2132$ total invested. If you buy coins today for that amount of money, this will give you 6.41 BTC. If you buy gear, you pay 4.37 BTC up front, which you won't mine back. Unless you get cheaper hosting or $/KWH. PS: There are 3 months of hosting at 0.047$/KW, that is not considered in this calc. PS: Calc does not take halving into consideration. If you can't ROI without halving, you probably can't with it either  Am I missing something? Better to buy coins than gear, in terms of ROI? Disclaimer: You can ofc ROI this in terms of $, if BTC price skyrocket. My point being, it's always better to buy coins.you are not putting btc into it, but $$. Don't put in bitcoin that you already have. these calculations never account for btc price change, and therefore cannot be trusted. Start with $$, end up with $$ and put in various bitcoin price scenarios. Besides, where in your calculations is the RESIDUAL value for the miner? It was ~55% in BTC and 35% in $$ for SP30 after 12 mo and 53% of SP20 in $$ and astonishing 78% in btc after 10.5 mo (even with a high price paid for SP20 before discount to $400-500). Thats if you want to diversify your money/risk, but if one or the other its entirely up to what you think the bitcoin price will do. ps: the calculation posted brings up something important: the PSU lease. By assuming $10/month for the lease, after 8 months the [half-]PSU is completely paid for. does it become property of the leasee, or do the monthly lease fees become monthly rental fees? Either way, that adds about $60-80 to the above calculations ROI. |
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Yes you are correct, sorry I should have said that. Are there any calculators take halving into effect?
I just do calculation up to halving, then a brand new calculation that assumes a ~9mos (or whatever it is exactly) lead time for 12.5btc/blocl. Then add the two together. From what I see though, breakeven is around the point of halving, after which there may be another 10-20% return over an extra 6-8 months. Biggest concern is that bitcoin price could move faster than difficulty, as I think it's realistic to assume $700/btc or better by 2017. |
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this is quite a good deal, its a shame the hardware cost is just a *smidge* high. If BTC could jump back over $350 I would be interested in 1-2 units
realistically the hardware would stay at GND for a year or more because of the costs to ship it elsewhere, and the fact that its cheap enough electricity that difficulty could pretty much quadruple at $320/BTC and still make a few dollars a month.
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I remember when paycoin popped up last year. Nicehash payout went to the moon.
I just sold five s5's that were at 15 found blocks each on nicehash.
LOL .... Paycoin. I mined that coin.... I also dumped for a profit just below its peak price while everyone else was waiting for that $20 price floor ....and before the stench of the scam make everyone nauseated Was great on the nicehash side. I had just fired up a bunch of s3's at nicehash and a few hours later the payout went stupid high. oh yeah i remember rates were crazy stupid...in a few small days i mined as much as a month or more... the guys who converted it were the real winners. Effectively rented hashrate for $3-6/PYC, and were selling them for $10+/PYC |
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Getting nervous yet bears?  we bears are not nervous in fact I am surprised the price has come down to the mid 300s so fast - i thought it might take a 2-4 weeks. if you look at an alltime chart that shows the willybot high it took about 12 months to hit its bottom at about $250 (about a 75% drop). So while I think the rate of the decrease will slow we will be low $2xx within 3 months. Thats not just bearish but also realistic That was a bubble with 10x price movement that took about a month to cover most of the volatility. This time was just a 2x price movement that took about a week to occur in earnest. I think its safe to say that it bottomed just under $300, and will probably stabilize in the $320-$360 range over the next 2 week. Its obvious theres a lot of support at $300, and moderately around $320 (july peak) fundamentally, there is no reason for bitcoin to fall below $250 after the way it broke the 2015 price trend, and signifigant evidence for it to be much higher than it was in mid-2013 (waay more venture investment, more legitimacy, more uses, better security and storage methods like trezor or multisig, and insanely higher hashrate. I honestly believe the price should be in the $400-800 range, but its more likely that volatility will send us much higher if the bullish long-term indicators continue |
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Was asked if I mind being a multisig key holder, and am okay with that. I think having more people improves the security and reliability of multisig.
Also, I would not suggest m-1/m (ie:5/6) because only two points of failure are needed, like one lost key and one AFK keyholder. 4/6 or 6/9 provide better distribution and simplify the act of having enough people act together when fund movement is necessary.
Still on the fence over the cost of hash power. 1btc/th is a lot better than before, but another 10-20% bitcoin price movement or competition from sptech/lketc/sidehack/etc could bring prices down <0.8btc/TH
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^you can get away with a bit more than 80% load, but i would absolutely not exceed 90%. for the risks it creates, you may as well just install another breaker+wire run, instead of risking a failure in your wiring.
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on wednesday i actually used my balance to arb ~$1200 over to quadrigacx, and sold it the next morning, and withdrew to my bank at 10% gain (~4% of this was overnight price movement, and then there was ~2% in fees for withdrawals/deposits. I then got LVL2 verified at cavirtex (PAD was approved within 18hrs) and requested a direct bank withdrawal to add funds.
notes:
to withdraw from quadriga i sent $100 via 24-hr e-transfer and got it within 12hrs. I sent $1000 via 2-5day e-transfer and am still waiting since thursday AM
to transfer the coins and sell them was quite simple. sadly i was focused only on arb and not looking for the peak, so i missed out on an easy +5% price movement by selling about 30min too soon.
to deposit to cavirtex takes a bit of time, i approved the withdrawal on thursday night and it has not yet occured, (site says 3-5 days though)
lesson: arbitrage is best when you have balances in both places. to cycle a small amount of funds CAV->quad->bank->cav can take over a week. It will still be a few days before i have CAD in the cavirtex account to trade with, but with my verification complete it will be easier to add funds. Despite not trying to make money on market price movement, I'm glad i sold these even at the price i did (~$500 instead of potentially $525 minutes later) because of the volatility that followed soon after
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One miner was giving me lots of HW errors and when i removed the fans to check the heatsinks, surprise...one missging  What can i do ? Write to Bitmain or buy heatsinks? Where from ? not sure if bitmain would be fast or particularly helpful to respond. An easy DIY would be to buy a small adhesive heatsink (look on ebay/amazon for "tiny heatsink, bitcoin heatsink, rpi heatsink" or something along those lines, they stick on easily and while smaller than the original, should help somewhat. alternatively, ignore it. accept the loss of ~80GH so long as the system appears to be getting ~98% of the nominal hashrate |
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I think that Batch 6 could end up being a good buy. For some reason the BM1385 chips do not seem to be performing to spec and they have upped the Core Voltage by reducing the number of chips. This is in place of reducing the frequency that they have done to 575MHz & in some cases to 550MHz. The new PSU specification is much easier to achieve being 11.6V to 13V whereas before it was 12.0V+5%, should not be less than 12.0V. I suspect in some cases people, dependant on how good their PSU was, will have had less than 12V at the Hash Board? So I think Batch 6 will have no problem performing to specification and I would expect it to be possible to Overclocked. My guess.... is that with 12.8 V supply 675MHz and possibly 700MHz would be possible giving 4.5TH & 4.7TH. No guarantees with the above. I have not seen or tested one and am just working off the same data you all have.  Rich I'm inclined to agree, but then bitmain could have advertised it as at least 4.2th? Also, increased voltage means lower efficiency |
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Is BTC-E dead?  ? oh my hell gap just keeps growing $70 now Obviously anyone with an in at BTC-E will be buying cheap, and selling elsewhere. This is not a fiat transfer problem situation like Huobi. Arbitrage is easy for anyone having fiat there, unless there's a BTC withdrawal issue we don't know about. take a look at the canadian exchanges: cavirtex; $515 CAD ($395 USD) QuadrigaCX: $565 CAD ($432 USD) not sure why the spread, but i just bought 3BTC on cavirtex and am just waiting for them to clear my Quadriga account. If all goes well, easy 10% (minus ~1% fees) |
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less than 4BTC/S7 now, sure glad i resisted the urge to buy any mining hardware in the last few months.
when the price is low, accumulate coins. when it is high, accumulate hashrate
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It would be interesting to understand at what point a new R1 is counted as "Valid" at Antpool. My gut feeling is that it is very straightforward and will be when you connect your R1 with a valid Bitmain email address entered for the first time. However it's also possible that it is counted even if you connect when it is set to Bitmain, as it's address includes the MAC? The only snag in confirming that the valid count goes up is that the Antrouter Mining screen is not visible until you have connected an R1... So if you were connecting a second R1 it would be easy and you could check the number, currently 141 which is only 1 up from Yesterday, and then plug up the new one and check again. If anyone one here has one that has not been connected or is getting one shortly you could ask for a count and then go ahead and connect. Other interesting experiments would be to change a miner to another ID / Bitmain account and see if it's counted again, and finally to edit in another MAC and see what that does? Rich i think it takes a bit, or might only count miners who are connected for several hours |
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