Ask HN: Have you made a profit mining Bitcoin?

I have about 4.5 BTC that I mined in mid-to-late 2011, using an nVidia GPU whenever my PC happened to be on and idle. At the time, I was just about breaking even compared to the extra cost of power; since then, the exchange rate has increased enough that if I were to sell, it would end up having been nicely profitable.

Unfortunately, the time when you could pull that off without a large up-front investment seems to be long past. Personally, there's no way I'd consider sinking a large amount of money into mining hardware at this point. If you believe BTC has a promising future, it's much safer to just buy coins. (EDIT: but of course, given the volatility, that only makes sense as a long-term plan.)

Yes. Having access to a few hundred computers that sit in computer labs all day mostly doing nothing, I used to fold proteins or search for Yeti. Now I mine.

But profit is kind of relative. I have made money. It is bankable, but I probably had more time in doing the initial setup than what I would have made if I had taken that same time and spent it doing something related to my primary job.

There is "Profit" there is "Revenue" and there is "a smart spend of my time". This met two of the three.

I've mined bitcoins, and have made a reasonable profit (~20ish BTC or so?). I mined in the GPU days, and while I currently run a small ASIC miner (BFL Jalapeno), it will likely barely be profitable.

The considerable risks and costs of getting into modern ASIC mining make it pretty unattractive at the moment. Until that changes, I'd advise anyone with a profit motive against investing a lot in BTC mining.

If you're confident that Bitcoin will go much higher, and are willing to wait a long while for it to happen, maybe it still could be worth considering. If you just like the idea of Bitcoin, getting a little ASIC miner for fun is entirely respectable. On the grand scale of things, bitcoin is still just a curiousity, and it doesn't hurt to dabble.

"How much do you have to spend on hardware to keep up with network difficulty these days?"

Financing will be your problem. Anyone else can buy that hardware and your profit (if any) is baked into the cake when you set the cost of renting that money and/or however you want to account for opportunity costs.

Or another way to put it is it's highly unlikely your financing cost (cost of the money traded to get the miners) is precisely zero, and when you factor it in, things get sketchier.

From what I understand the USB type hardware isn't profitable.

You could see much better financial gains buying coins and hoping for the best or investing is something else.

GH/s per watt is everything. I'm pretty sure you're looking at the Sapphire USB miners. These are almost certainly not worth it. If you got 38 of these for free and had free power and started mining tomorrow, you would have perhaps $1500 worth of BTC a year from now.

Assuming you're buying and powering them yourself, you're paying around $1000 and $200 bucks in electricity. It's a fairly risky investment that will likely net you at most $300 on a $1200 outlay.

To summarize your purchase: 132 MH/s/watt for ~$1000

If you want to make a better risky investment, you might look into pre-ordering into one of the newer process ASICs, like Butterfly Labs' Monarch:

http://www.butterflylabs.com/monarch/

This purchase: 1.71GH/s/watt for $4680

The problem is you're pretty late in the game, so it's really hard to predict what the difficulty rate will look like in even a few months.

It's possible that your USB miners will be worthless in a few months due to the mass in flux of newer ASICs. It's also possible that so many people will be purchasing newer ASIC miners that ALL mining will become entirely unprofitable.

And all of this assumes the relative stability of the BTC/USD exchange rate. :)

Add it all up (usb hubs, power bricks included too) and put the numbers into the calculator on the genesis block.

http://mining.thegenesisblock.com/

The 330MH/s miners were profitable if you bought them a few months ago but with the rising difficulty of the network, they don't seem likely to break even.

A more likely profitable venture would be to use the same money and buy into bitcoins. Secure your wallet and sit on it in hopes the price rises.

If this was 2010 or 2011 or so, you'd have a really good shot, but not near the end of 2013.

It's certainly theoretically possible to make a bit of extra money, but I think it's probably much too late in the game to make a serious go of Bitcoin mining for the acquisition of wealth unless you somehow have a free source of electricity and/or hardware.

I think the guys who are really going to make some money off of Bitcoin mining going forward are the people who sell the specialized mining rigs.

I took a page from the "selling pickaxes" manufacturers themselves. I purchased a Jalapeno in Aug 2012, then upgraded right before they doubled prices of the miners. Then I auctioned the preorder for 30BTC . Retail for the device was $1500 even though I paid $700. Sadly the coins were worth $6K while being held in escrow, and only worth $3K by the time I converted to fiat.

Nope. Made a tonne selling mining devices though. Paid my rent for a few months.

The best advice I ever received was over 2 years ago whilst on holiday in Canada. A dude there said that he'd spent $6000 CAD on mining equipment (GPUs) and had made a cool $15000 - but he said that he would have made more if he'd of just bought the coins.

Rewind to just over a year ago and I place a (pre)order for 5 ASIC miners (from Butterfly labs) for a total of $3250. When the things arrived, a year later, I was lucky that they were still profitable at the time (mid August) as the price of BTC had risen but decided to sell them on eBay for ~$3000 each because not only were they ridiculously loud and I had no where to put them but the difficulty was ~60 million and increasing (and it's now 148).

I was lucky enough to pay off my credit card and still have some left over with the money I made from selling the miners. Although I made a decent profit, I would have made a lot more if I'd of just bought the coins for the same value (as they've increased ten fold in the same period).

Now I've invested around half of my profits back into buying coins and so have finally taken the original advice onboard. This and the current market conditions make even the best mining options from Cointerra seem like a risky investment at this stage.

Mining? No. I have lost a small amount. Had a little fun. You might make a mint, but it is the wild west. You need to be able to spend a fair amount of time fussing with the things. My USB ASIC Miners would overheat and reset a lot until I put some heat sinks on.

>and am concerned about rising network difficulty potentially preventing my recoup...

Yup. You are wise to be concerned. If you want a nice boring low-risk investment, umm some ICA mutual fund maybe? But that's no fun.

Speculating, I'm a little bit ahead, and I have a lot more fun doing that.

I guess the "picks and shovels" rule holds for this gold rush too.

No

Bought 2 FPGA miner rigs from BFL. One of their first customers to take that risk. Cost about 30 grand. Liquidated 2 of my 6 underperforming retirement funds to pay for it as I was unemployed at the time (yes I am a little crazy and obviously have no dependents).

I now have about 330 grand in BTC. After paying off the original investment (and then some) by selling off 1/3 my holdings when it was $230. I also paid off the upgrade to 3 ASIC mining rigs (4.5TH) which should ship... Imminently actually.

I also have a 6 figure developer job but Bitcoin has made me far more money so far (on paper) this past year.

I'm still bullish on it. Welcome to Internet Gold 2.0.

I read about Bitcoin in June 2011 and built a miner using two ATI 5830s shortly after. It ran at ~550 megahashes and cost a total of $450.00 to build using newegg.

I live in an area with free power in Tokyo and let the machine run for ~2 years. During some of this time Bitcoin was hovering around $2.00. I was mining as a hobby since it cost no money and I believed in Bitcoin's potential.

In the second half of 2012 the price started jumping and I netted a very very nice return. I would not mine now as any real investment. I would like to believe Bitcoin's adoption will increase and the price will continue rising, but short term I think it's still quite the gamble.

> I'm currently considering a Group Buy of 38 330 MH/s USB ASIC Miners

You will lose money. Don't do it. You will be better off just buying coins.

Since ASICs are now "out there", the overall difficulty might not jump as quickly as when they were newer. But in general you'll be losing money (especially if you pay when you pre-order[1]), or possibly running pretty thin margins, unless you're way ahead of the curve (then you can make a lot. but that's unlikely to happen.).

It's a gamble, and it's a gamble Bitcoin is designed to prevent being too profitable. To be frank, I wouldn't suggest it.

To answer the title, I made about a quarter of a coin back when GPU miners were relatively new, on Slush's pool. And about 0.1 coin with my CPU prior to that. Otherwise nope :)

[1]: assuming the relatively-stable constant increase in bitcoin price keeps going, you'll very likely make way more just by buying the bitcoins then. that growth has survived every boom and bust thus far, completely unscathed, so it seems pretty likely to continue.

Back in 2011, I mined enough BTC on my $1000 mining rig to eventually make a 5x profit, but there's no way I'd be able to make a profit today at the current difficulty/prices.

I got in on it back when bitcoins were around $1 each. I sold 10btc at the first $30 bubble, and made enough to buy a new video card, and I still have somewhere between 60 and 70 btc left. Haven't touched it or payed attention to it much after that, besides checking the price every once in a while.

I mined in mid 2010 from my CPU. I was not a hardware guy, so I gave up in about 6 months. I have managed to keep every bitcoin key I've ever owned, with the exception of one small mistake that cost me 1 bitcoin. During this mining period, they were worth $0.06 up to $1. It took me those 6 months to have my first epiphany about the value of Bitcoin. But it was just one of several more monumental epiphanies to come over the next 3 years.

I bought in to the BFL pre-order during the first few days of the announcement. It took me 12 months to receive the hardware. During that time, Avalon beat BFL to market and destroyed my expected difficulty. Fortunately, the $1800 I spend on the hardware has paid me back over 10x in dollar amount. It will take me about another 6-9 months to break even on the bitcoins I spend due to the massive rise in value since I made the pre-order. Fortunately, I bought a good number of bitcoins at the same time so I've made out on both investments.

I have purchase a BFL Monarch during the first few days of the announcement, but I do not expect to make the money back in any reasonable amount of time due to the flood of new ASICs and coming changes in difficulty. Fortunately, I do not have power costs.

I received 2 of the AVALON ASIC Batch 2 orders in July. They cost about 55 BTC (~$1500USD) each in February and now I have mined about 94 BTC ($13000) on each (running at about 83GH/s).

The daily mine total has decreased about 10fold, each making about 0.25BTC per day with the latest diff increase.

The cost per day in electricity is $1.50-2 so with current exchange rates and diff increases they should be 'profitable' until Feb-Mar next year (not even a full year).

It seems like, due to the deflationary nature of bitcoin, it would be more cost effective to just buy bitcoin outright now, instead of buying mining hardware.