the L9 (don't know this ASIC) and D3 aren't sha256d asic's. The OP was asking about bitcoin miners, not altcoin miners.

@OP: at this point in time, the antminer S9 is the sha256d ASIC with the lowests J/Gh on the market. However, you still need pretty cheap electricity in order to mine profitably, and bitmain only offers 90 of warrantee, and the S9 is known to break easily.
If you go for canaan products, they are known to be a bit sturdier, and their support dept is known to be a little bit more user-friendly, but their best product is not as efficient as the S9.

I've put your mistake in big, bold letters...

https://en.bitcoin.it/wiki/Non-specialized_hardware_comparison

The best single GPU on that list hashes at 0.9 Gh/s with an extra power draw of ~400 Watt (extrapolated from the 2x Ati 6990 rig). Granted, this list hasn't been updated in a while, but it's not like the new GPU's are 50 times more efficient (actually, at the time of writing, the new GPU's would have to be 1000 times more efficient than the GPU's on this website just to break even... This is certainly not the case).

If we plug these values in coinwarz at current diff and btc price with a 7 cent/Kwu power price and a 1% pool fee:
https://www.coinwarz.com/calculators/bitcoin-mining-calculator/?h=0.9&p=400&pc=0.07&pf=1&d=1103400932964.29000000&r=12.50000000&er=3859.50010000&hc=0.00

You net LOSS would be $0.67/day if you ran this setup.

Sure, if BTC prices rose to extreme heights, you might break even in the end, after holding your mined coins for decades. But if, instead, you bought BTC directly with the money you would have spent on your power bill, your profit would be much higher than when you mined at a loss and kept your btc untill the price was so high you were ROI'ing.

Proof of this statement:
1) you mine with 10 GPU's at 9Gh/s consuming 4Kw for one year...
power costs: ~$2500
Income: 0.00074863 BTC
The BTC price would have to go up to 3.34 million USD per BTC in order for you to break even. If, at the time one BTC costs 3.34 million USD/BTC, you sell your 0.00074863 BTC, you would have ROI'd (no profit, just broke even)

2) If you bought $2500 worth of BTC today, you would get 0.68 BTC
costs: ~$2500
Income: 0.68 BTC
If, just like in the first example, the BTC price would rise to 3.34 million USD/BTC, your 0.68 BTC would have a net worth of 2.3 million USD.

So, in conclusion, buying BTC and holding it would be about 900 times more profitable than mining with a GPU and waiting untill the mined BTC are worth enough to break even

Shorena actually wrote a big tutorial on this topic:
https://bitcointalk.org/index.php?topic=990345.0

Good luck!

First of all, losing your account to a hacker feels bad, i feel sorry for you and can completely understand your anger and frustration towards the forum's system.

That being said: the way you're posting will probably not result in the return of your account, but rather in a removal of your posts and a ban of your new account. In order to have a shot at recuperating your account:

• only 1 bump is allowed per 24 hours
• this thread belongs in the meta subforum
• you don't show any cryptographical proof the account belongs to you... Find an old thread where you posted an address, then use this address to sign a message. If you post this message, and it checks out, people from DT will mark your old account and tell if it's ok to pm theymos or cyrus with said message

I guess that would be possible, 2 users would download the blockchain each under their own home folder, and the bitcoin-qt's lock would also be placed in their respective home folders. If you'd tweak the bitcoin.conf file to make sure each user uses different ports, i think they should be able to run at the same time. However, unless the two users would always have their wallet open at the very same time, i don't see any advantages to this approach, and the disadvantage would be that the ledger is downloaded and verified twice (doubling the load and the necessary diskspace).

Anyways, like it's been said before 0.15.0.1 should solve the problem completely since you could just load more than 1 wallet at the same time. (never tried this, since 0.15.0.1 has only been released very recently)

pre 0.15.0.1 that was correct. But, as OmegaStarScream pointed out, since 0.15.0.1 was released earlyer this week, it is now possible to open more than one wallet at once.

Just start bitcoin-qt without any parameters for the first time... A new wallet.dat will be created in the correct folder (depending on your OS*). It's a good idear to encrypt this wallet.dat (this encryption feature is accessible trough the gui interface) , especially since you told us you'd be receiving 2 BTC. Might i even suggest using 0.02-0.03 of those 2 BTC to buy a hardware wallet?

Afterwards, rename your friends wallet.dat to friendsname.dat, and place it in the same folder, then create 2 shortcut's to "\pathtobitcoincoreinstallation\bitcoin-qt.exe -wallet=wallet.dat" and "\pathtobitcoincoreinstallation\bitcoin-qt.exe -wallet=yourfriendsname.dat" (offcourse, when you use linux, the binary won't be named bitcoin-qt.exe, but bitcoin-qt, and you can either make a shortcut on your gnome or kde's desktop, or you can chose to create an alias directly)

*https://en.bitcoin.it/wiki/Data_directory#Default_Location

EDIT: PS: if you have bitcoin core 0.15.0.1, you can use the feature OmegaStarScream pointed out IF you want to and IF opening the two wallets at the same time won't confuse you... In this case, the shortcut should point to "\pathtobitcoincoreinstallation\bitcoin-qt.exe -wallet=yourfriendsname.dat -wallet=wallet.dat"

Correct, or even better after readin OmegaStarScream's post:


Didn't read the release notes yet, so, OP, even with an old version you could load the 2 wallets, but you could only load one wallet at a time... If you upgrade to 0.15.0.1, you can even load the 2 wallets at the same time (which might be confusing since you'll be managing both your own, and your friends funds at the same time in this case... So it might still be a good idear to load one at a time)

You can keep as many wallets as you want on the same PC. However, if using core, you can only have one of them open at the same time.

You can open them from the commandline, in windows, it's "bitcoin-qt.exe -wallet=<file>". In windows, you can just make 2 shortcuts: one to each wallet. In linux, you can create an alias for each wallet.

AFAIK, it's some kind of art best left to specialists. You can try using a BBCODE WYSIWYG editor, but without a lot of experience and an artistic mind, you won't be able to make a nice one anyways.

Example of a WYSIWYG BBcode editor: https://www.sceditor.com/

I've seen a lot of signature campaigns that first offer a bounty for a set of signatures. If you want a nice set of matching signatures for all ranks, it might be a good idear to escrow a couple hundred bucks worth of BTC, then start a competition with the escrowed cash price for the best design. That way you can pick the nicest design for your campaign.

Good luck!

I don't belong to the trial group, so i cannot check by myself, however, the op posted following image in his very first post:

It clearly states: "use your browser to passively mine bitcoin", it's right in the first, bold, line in the screenshot.



I'm sorry i must have missed the part where you said it was probably XMR... I won't re-do the calculations to see if XMR mining would be profitable. I was just digging into the info i found in this thread and must have missed your initial conclusion.

It seems to have been a temporarry problem, it's back up now

Since people were saying this is not some kind of experiment, and a lot of nonsense was being posted, even claimed they could break even... I decided to digg a little bit deeper.

I have to admit, i was a bit lazy, so i used this post to get the formula daily revenue:
https://bitcointalk.org/index.php?topic=726962.msg8221939#msg8221939


Offcourse, the block reward dropped to 12.5, so we have to exchange 25 to 12.5 in the above formula

So, the revenue = the hashrate (H/s) * 491512500  / 281474976710656 / Difficulty * 144
If we use this formula to calculate the dayly revenue of an antminer S9:
1.4e+13 * 491512500 / 281474976710656 / 1103400932964* 144 = 0.00319045009

coinwarz is a pretty reliable mining calculator used by lot of people, at this moment, it reports a dayly revenue of 0.00319050. I think this proves the formula is relatively correct.

abhinav_thakur01 reported a hashrate of 1-2 H/s

Plug 2 H/s into the above formula:
2 * 491512500 / 281474976710656 / 1103400932964* 144 = 4.56 e-16 = 0.0000000000000005 BTC/day = 0.00000005 satoshi's/day = you'll need to mine over 50.000 years to mine a single satoshi at a speed of 2 hashes per second.

If we re-read TheQuin's statement, and combine it with abhinav_thakur01 speed report, then plug everything into coinwarz with a 10 cent/kwu power cost

link
We see that the net loss of such a mining operation would be ~$7/year, simply because (luckily) the power draw was only 8.5 watt. The net loss is calculated this way: the income of your mining is 0 (nill, nothing, zip) minus the power costs (~$7/year) gives a net loss of ~$7/year.

A re-state my previous theories about freebitco.in browser mining... i'm pretty sure one of these theories (or a combination of these theories) is the correct one:

• OR they're not bitcoin mining like they claim, but mine a coin that is still cpu-only minable, but still pay you in BTC
• OR they're performing some other task in the background... Don't know which one tough
• OR they just use the browser mining as a trick to keep you on their page... They subsidise your account for staying with them 24/7, watching adds

And as a final wacko theory i wanted to add this link: http://www.csl.mete.metu.edu.tr/Electromigration/emig.htm
It's an interesting read for everybody that claims there is no harm at running your cpu at 100% for long times (or overclocking your cpu).
I know it's not completely on-topic,  but it's still interesting nonetheless

I see... The hacker stole your fubds, moved it to a temp addres, then moved to the addres it's currently on... Never mind my warning then...

I'm very sorry for you... 29 btc is a lot of money to lose.
Just in case you'te somebody who has even more btc: a trezor hw wallet costs 100 bucks and should protect you from hackers and virusses

Nope... The only option you got is keep on tracking and hoping that at one point, the funds can be tied to an addres whose owner is known. At this point you can report said owner to the police....
But don't get your hopes up, chances that this will happen are very slim. Usually hackers will launder the money very fast.

Wait: if the funds are now @ that address, this means that this is your address: https://blockchain.info/nl/address/113cesQ3HJxEkzZ9iRXg3jMoFgKMXhiCgA

Why are you depositing funds to a hacked/compromised wallet!!!

This is a ver bad idear

If it's really BTC mining, i wouldn't bother.... Chance of your pc overheating would be a lot bigger than chance of making enough BTC to withdraw, ever.

I found this old thread:
https://bitcointalk.org/index.php?topic=9042.msg130903#msg130903

I can't quote the post, since the thread is locked, but SoreGums gave following hashrates:


plugging those numbers into coinwarz:
coinwarz link

0 sat/year...

So, they're either not really mining in the background, and just use this miner as an excuse to make you stay on their page and watch their ads, or they're doing something completely different using your computer and pay you in BTC (like mining monero, or they're doing something useless that will break your pc without any profit.

Sort off... If you look up the transaction on a block explorer like blockchain.info, you should be able to follow where your funds are going to.
However, if the thieve uses a mixer, deposits the funds to the hotwallet of a casino, exchanges your BTC for a more anonymous crypto currency, the trail will end.

You can follow the trail as long as possible, and look up the addresses in the trail on https://www.walletexplorer.com, bitcointalk.org and/or google you *might* find more information about the thief... Chances are slim you'll find the culprit tough, they're usually smart enough to avoid any traces.

If you open that page, you'll see that at the time of writing, the mempool contains
~10k unconfirmed transactions with a fee between 0 and 20 sat/byte
~8k unconfirmed transactions with a fee between 21 and 40 sat/byte
~1k unconfirmed transactions with a fee between 41 and 60 sat/byte
...

Since a block contains ~2000 transactions, your fee should be high enough to put you in the top 2000 transactions, that way you have a decent chance of getting your tx into the next block.

The graph also shows you the estimated waiting time for a 95% chance of getting into the next x blocks with any given transaction fee. For example, at the time of writing, adding a 20 sat/byte fee will give you a 95% chance of getting your transaction confirmed within 840 minutes.

Under the graph, there is a text that currently reads:

So, basically, if you add a fee of 180 sat/byte, you should be fine.

I'm defenately not disagreeing with you, however, bitmixer has stated they closed their mixer because they stopped believing every bitcoin user has the right to privacy (https://bitcointalk.org/index.php?topic=2042470.0). They might have had an alterior motive (they might have been forced to close shop, they might have been blackmailed,...), but they didn't give any extra motivation.
It's not because they had a change of heart, everybody should have a change of heart.

Personally, i'm a strong believer in privacy, and as long as mixing coins is not considered illegal in my country, i'll keep on stating that there is nothing wrong with using a mixer. I'll also stand behind any honest and reliable organisation that opens a mixing service.


you don't need to be a criminal to mix your coins, your BTC doesn't have to originate from criminal deeds for you to want to hide how much BTC you own.

For example: you might have been doxxed in the past, so everybody and their mother know who you are, where you live, where your kids go to school and which address you usually use to receive payments. Wouldn't it be normal you wanted to break any link between your public payment address and your private address? If you didn't break the link between those two addresses, everybody would know exactly how much BTC you were holding, which would give them a great incentive to break into your house at night and take your family hostage untill you gave up your BTC... Wanting privacy != illegal.

Here you go, please note that i couldn't verify any signature since it was not clear to me what your message text might have been.