Hmm not sure, as long as you send a small amount and you can see that amount actually reached the address it should be all good to send more to it? It must be what they meant?
By the way, when I want to sweep (if that is what restoring my coins is) the paper wallet and it has a bip48 on it, where do I put in the bip48? I have restored a regular paper wallet before, but I never saw any option to put in a bip48 password?
If you mean loading the wallet and then using a block explorer to see if the output is added to the address' balance, that would be OK. However, this procedure will not guarantee that you'll be able to spend outputs. If you do this, you might end up with a loaded paper wallet and no knowledge on how to spend your outputs... However, if you load the wallet, then try to spend some of the outputs (but not all), in order to test your paper wallet, you have 2 risks: 1) you will have entered the private key onto some sort of wallet software, this is not good 2) as soon as you create a transaction to spend outputs from your paper wallet, you will have broadcasted your public key, this is not good That is why you can create 2 paper wallets, load one with a minimal amount, try to sweep it... If everything goes well, load the rest of the funds onto the second paper wallet whose private key has never touched an online machine. As for your second question: it seems most wallets do not support bip38 encrypted private keys. However, you can use the offline sourcecode of bitaddress.org (the wallet details-tab) to decrypt an encrypted key, then sweep the decrypted key.
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Please Help (Fund stacked from 25 May 2017) transaction id: 975c827af7135f058c3dcde6482de2b9069250462904d499585722379f3e12be sender/receiver: sender addresses: 1MoerEjGeZ1Eg5UB4zhvHWfHs7dFUXscwT is my address, 3Hz65vtjV79W1C29Pvg2kyLuTQNnYk5sg2 is the receiver's address wallet software: blockchain.info mempool: yes, i have checked http://www.mocacinno.com/page/getraw, entered my transaction id, and i was shown the raw transaction, so this transaction is in your mempool something strange: no, i have checked for unconfirmed parents, dust outputs and double spends on blockchain.info, and could not find any anomalies rectified situation: yes, in the future i'll use dynamic fees, and set the slider all the way to the right AND i'll use http://www.mocacinno.com/page/feeestimate for a second opinion tip: yes, I will see what is left into my wallet for btc and definitely send some to you. Thanks! ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) This one has a fee of 5 sat/byte, so viaBTC won't even accept it (unless you pay for an acceleration). A second problem is that it has a dust output (~700 satoshi's). I submitted the transaction to antpool, so if everything goes well, it'll hopefully be included in one of their next blocks, altough since it's a 14kb transaction with such a low fee, there is no guarantee! Since there is change going back to your own address, we can attempt a CPFP if antpool doesn't accept the transaction... But we'll try antpool first. BTW: in the future, try to avoid collecting dust outputs, like you see here, dust outputs lead to gigantic transactions, forcing you to use gigantic fees. In this case, the appropriate fee would have been 0.0546 BTC
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How do you mean you "lament" your paper and how is this done and why? (sorry not native english) How do you bip38 encrypt a wallet? I looked in https://walletgenerator.net/ but I could not see such an option on the single wallet? I only saw it on the paper wallet section, but there you don't get to input any random words to generate the private key, but instead just press a button that give key, that does not feel nearly as safe? Btw, is bip38 when you also put a password on your paper wallet, and does that work with all coins that can have a paper wallet? put plastic around the paper, so it's water-proof (i hope lament was the correct term, i'm not a native speaker myself ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) ) i always use https://www.bitaddress.org , this paper wallet generator allows you to use bip38 encryption Also do you undertand what they mean with this?
"Step 5. Keep your private key secret
The private key is literally the keys to your coins, if someone was to obtain it, they could withdraw the funds currently in the wallet, and any funds that might be deposited in that wallet.
Please test spending a small amount before receiving any large payments."
What do they mean by spend a small amount? Once I create a paper wallet and send funds to it I cant spend it until I have extracted the private key, which I should only do once I actually do want to spend the funds again? Do they actually mean to SEND a small amount to the address before sending a bigger amount to the address?
Well, i would advise against spending part of the unconfirmed outputs that are controlled by the private key on your paper wallet... Either sweep it completely, or don't touch it at all.. Maybe they mean that you should generate a test-paper wallet, put a small amount on it, then sweep it, then generate a NEW paper wallet to actually use...
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Thank you! Sounds easy enough and using something like https://walletgenerator.net sounds actually more convinient to store different coins than trying to install and set up a dozen of different desktop wallets for each coin. Now I have so few coins so maybe it is a bit overkill, but my thinking is that even a very few coins could be worth a fortune in 10 years. But booting up ubuntu from an usb is even safer then? (Or should you use a CD instead?) I even heard someone say that you should pull out your hard drives while you do this to minimize infection risk. Don't know where the lines goes from security to paranoia though ![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif) Is storing the paper wallet on an USB not risky though? What if the usb malfunction or something? If you're really paranoid, you could indeed make a tails usbstick and boot from an airgapped machine without harddisks... But personally, i do think that's overkill ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) As for storing your paper wallet on an usbstick: i also print it out on an offline printer and laminate this paper. I would suggest to bip38 encrypt your paper wallet, if you pick a strong password, it would be very hard for anyone to steal your coins ![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
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It goes down by 14% per month? Like, every month? Is that a stable statistic number? Yikes. That's scary. I wasn't thinking on ROI because I thought the decrease in income would not be THAT big. That warrants some rethinking. In your experience, could you recommend a safe altcoin? I stumbled across some but just like the S9 seemed perfect in pictures (then I hear about warranty stuff from you and look it up to find out this is a huge issue) I am guessing a lot of these altcoins have their own problems? My focus is on reliability of cashing in and in avoiding scams. I know I shouldn't be asking about altcoins here, I am only looking for a name and I will research it by myself further or in the appropriate forum ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) edit: also.. 27 cents / kWh. Wow, and I thought we had it bad ![Cheesy](https://bitcointalk.org/Smileys/default/cheesy.gif) The difficulty is more or less directly linked to the network's hashrate... If more people start to mine (or if they swap out older, slower, miners for new ones), the difficulty goes up (there is a diff adjustment every 2016 blocks ~2weeks). One site said the diff increase for next period was estimated to be +14%, while another site estimated it at ~+3%... It's hard to predict these numbers... However, usually, the diff goes up, altough from time to time it might go down to. you can use a site like this one: https://bitcoinwisdom.com/bitcoin/difficulty to see historic numbers, altough these numbers do not really predict the future ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) I don't really have a lot of altcoin mining experience... Maybe Amph will see this thread and give his opinion..
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I don't think it's an EXTRA security risk (depending on which software you use to generate the paper wallet)... However, in my personal opinion, paper wallets are used for long term storage of bigger amounts... A paper wallet needs to be safer than a desktop wallet, that's why you should take extra precautions when generating it.
If you were using an online machine to generate a paper wallet, you could just have used a desktop wallet instead...
If we are talking about the same amount stored though? Do the Paper wallet need to be safer than the desktop wallet in that case? And because you never type anything in to the computer when creating a paper wallet, and many dektop wallets actually make you type in your seed which is your password when you send coins, does that mean the paper wallet is safer even when always connected to the internet? If that is the case, creating the paper wallet with the internet off on the same computer that you normally have your coins in a desktop wallet should be like 10X more secure vs using a desktop wallet? Or should you always setup your desktop wallets also in offline mode? (I have never seen any instructions though when initializing a desktop wallet that you should turn out the internet so if that is much safer I dont understand why there would be no such instructions during the setup, I have always thought you need to be connected to the internet to setup desktop wallets? There is something that needs to be sent to a server an initialize your key in the system? It can't all be done offline?) I feel like I am missing something here. I'm going to try to formulate an answer here... altough there seem to be a lot of questions mingled together... Remember, i can only give you my personal opinion, what works for me doesn't necessarily work for you: - if you store the same amount of BTC, and not looking for extra security, i would defenatly go for a desktop wallet... Easyer to use, and already pretty safe out-of-the box (most of the time) - i have no idear if it's an extra security issue if an HD wallet forces you to repeat the seed... I guess on an infected PC, it might be completely unsecure... you're right - personally, i don't boot using an usb bootable os when generating a paper wallet... I just download bitaddress's sourcecode, turn off my internet, generate a paper wallet, put the wallet on an USB stick and then reboot my pc before i turn the internet back on - i think most desktop wallet will allow you to generate your wallet while you're offline... I'm sure about core and electrum, but i don't think other wallet would turn out to be a problem... However, if you want to start syncing the blocks (or block headers in case of electrum), it's obvious you'll need to be online. It is possible for you to only keep the xprv (or private keys in case of a non HD wallet) on an offline pc, while importing the xpub (or addresses) on an online PC... This way you actually implemented a cold storage technique ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) Also a practical question. When you create your paper wallet you get a public and a private key. Can you do searches on your public key or put in some program like cointracker to keep track of your balance in your paper wallet, or is that also a risk? Should you just send money into the paper wallet adress and hope it is there, or how do you check it actually arrived since there is no gui on it?
Most paper wallet generators give you a private key and an address... I don't see any security issues when looking up your balance using your address by using a block explorer. The only thing that might happen is that you lose a bit of anonimity (your ip could potentially be tracked). The only moment your private key should be scanned (or typed into) an online pc is when you sweep your paper wallet tough!!!! I would also recommand not to enter your public key on an onine PC, only your address. Without all technical aspects, and the many different forms it actually goes like this: private key =(hashing function)=> public key =(hashing function)=> address So, if the first hashing function ever gets compromised, it should (theorecitally) be possible to re-calculate your private key starting from your public key... IF a hacker wants to calculate your private key while he only has your address, he has to reverse-engineer 2 different hashing algo's...
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1. ROI isn't that much of an issue for me, my goal is to generate a stable-ish (I understand the rates can go up or down, most of the times down ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) ) income so I can live off that. I get bonus points for being in Romania and life being very cheap compared to other countries. It's completely up to you wether you decide to start mining or not... But in my personal opinion, ROI is always important... An S9 delivered to your door will probably set you back ~$3000... so with your $10.000 budget, you can buy 3 S9's... They'll make about $1000 in the first month, but since the diff is expected to go up 14% next time, you'll probably only make $860 your next month... Maybe $760 in 2 months,... The odds are very big you'll need to keep on mining more than 15 months in order to recuperate your investment (just an eductated guess tough... I can be wrong)... Only then can you start making a profit! https://bitcoinwisdom.com/bitcoin/difficulty3. Exactly how noisy? Is using a cheap-ish isolation a solution or is it money flushed down the toilet? Same question about the heat issue. How big of an issue? Is it solvable by drilling 1-2 holes in my wardrobe and setting up 2-3 fans inside it? Or do I need voodoo stuff like a freon / water cooling system?
Like i said... 1 S9 seems to produce about the noise of a loud alarm clock when 4 feet away... About the heat: 3 S9's produce ~4000Watt of heat... I don't think 1-2 holes will be sufficient ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) 300$ profit / unit in a month for me is good for me, life is cheap here. Sure, ROI might take a lot but it's all fine for me as long as the income flows.
As long as you recuperated your investment before the monthly income turns negative (this can happen!!!) On the warranty issue.. are these things known to break down early / often? Are they easy to fix? Do they need special maintenance or down time from time to time?
https://cse.google.com/cse?cx=016660200577587308545%3Aesf40ml9aag&ie=UTF-8&q=bitmain+s9+warranty&sa=Google+search#gsc.tab=0&gsc.q=bitmain%20s9%20warranty&gsc.page=1Read this first ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) I will also look into altcoin.
I unplugged my miners years ago, but if i was in your situation, and determined to start mining... Altcoins would be my first choice (i do pay +27cent/kwu at the moment)
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I don't think it's an EXTRA security risk (depending on which software you use to generate the paper wallet)... However, in my personal opinion, paper wallets are used for long term storage of bigger amounts... A paper wallet needs to be safer than a desktop wallet, that's why you should take extra precautions when generating it.
If you were using an online machine to generate a paper wallet, you could just have used a desktop wallet instead...
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I'll be short.. I am thinking of buying a few miners, hoping to set this up as an income source and I was hoping for a few pointers if anyone has the time. I have seen a few questions being asked often so I will answer in advance ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) 1. My energy cost is 0.11$ / kWh. Is that much even with newer miners? 2. Budge. If the numbers add up I would be willing to spend up to 10.000$ 3. Infrastructure. I have a place for the miners and I know people that could set up the power cord in a professional efficient manner. Noise might be a problem, are these things extremely noisy? I was thinking of making part of my wardrobe as the mining farm so it will be suppressed in a way. However, I live in a apartment block so I want to know if it can be a bother to neighbors. 1) that's really much... Maybe you'll make some profits with a latest gen asic, but it'll take ages to ROI 2) you can buy some miners for 10.000... You probably won't be able to setup a big farm, but it'll be sufficient to start 3) most latest gen ASIC's are indeed very noisy, and they produce a lot of heat... ( https://bitcointalk.org/index.php?topic=1493601.msg15279044#msg15279044) => 79 db from 4 feet... that's somewhere between a vacuum cleaner and a loud alarm clock (if i'm not mistaking) Here's the current approximate profit you'd make with an S9 (at current diff, btc price and block reward) https://www.coinwarz.com/calculators/bitcoin-mining-calculator/?h=14000&p=1375&pc=0.11&pf=1&d=678760110082.99000000&r=12.50000000&er=2883.21800000&hc=0.00So, at this moment, you'd make ~$330 profit/month... if the diff rises, the profit plummets, if the price goes down, the profit plummets, if your HW breaks => you'll have problems (bitmain only offers 3 months warrantee, and even these 3 months are seldomly honoured... At least, they're not honoured in a western way) With that power price, it might be wise to investigate ALTcoin mining, either with a small GPU farm, or with one of those new X11-X15 miners from baikal...
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Hi folks,
Today I wanted to start buying some Verge and perhaps some VIA or BAT coins, and so I transferred 50eur to blockchain.info. Following, I tried to transfer it to Bittrex but it seems that after 3 hours the confirmation (also on blockchain.info) is still pending.
Is there any way to speed up the process?
Thanks a lot.
HCP and myself are running a free service to help you out with this: https://bitcointalk.org/index.php?topic=1943939.msg19320356#msg19320356
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Hi everyone.
I still have my seed and my wallet password from electrum. However whenever i start electrum there is no way to recover a wallet, it always only gives me the option to remake a NEW wallet, not to recover an old one. I tried redownloading electrum but it's the same over and over again. Willing to pay some moneys to the person who helps me fix this.
- Kaii
Don't need to pay money, you were on the correct track: just follow the wizard to create a new wallet, one of the following steps will give you the option to either create a new seed, or re-use an old one (i think the correct phrase is "i already have a seed" Hi there, That's the problem. I cannot find the wizard. Everytime i open electrum i see this https://i.imgur.com/eSD0nUc.pngthen https://i.imgur.com/j15KhlW.pngthen https://i.imgur.com/Ud0ohYM.pngand lastly https://i.imgur.com/giOskaV.pngSo where can i restore my old wallet? ![Cry](https://bitcointalk.org/Smileys/default/cry.gif) - Kaii It's right here: https://i.imgur.com/j15KhlW.pngyou selected "create a new seed" you needed to select "I already have a seed" ![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
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Hi everyone.
I still have my seed and my wallet password from electrum. However whenever i start electrum there is no way to recover a wallet, it always only gives me the option to remake a NEW wallet, not to recover an old one. I tried redownloading electrum but it's the same over and over again. Willing to pay some moneys to the person who helps me fix this.
- Kaii
No need to offer a bounty for this question ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) , you were on the right track anyways: just follow the wizard to create a new wallet, one of the following steps will give you the option to either create a new seed, or re-use an old one (i think the correct phrase is "i already have a seed"). BTW: you don't actually need to use the same password again, just use the same seed and chose any (new) password you'd like.
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Submitted to viabtc. The problem should be fixed when they mine their next block. If its not done by the time i get to the office, i'll also push it to antpool. Just wanted to say amazing community here! I think the parent transaction is the problem. Thank you again and I look forward to working with you You are correct, fc99fe6e426fb98a5f8ae03ca5720998db5267b16c29c834c50ddff75043d00a is using outputs of fd7db6ff3150fd9c31d488bfcdfc5d0dc8faf222b4516137e0442c5ec62e3aa6, fd7db6ff3150fd9c31d488bfcdfc5d0dc8faf222b4516137e0442c5ec62e3aa6 has insufficient fees so it usually won't be added to a miner's block. If fd7db6ff3150fd9c31d488bfcdfc5d0dc8faf222b4516137e0442c5ec62e3aa6is added to a block , fc99fe6e426fb98a5f8ae03ca5720998db5267b16c29c834c50ddff75043d00a will be confirmed shortly. I added fc99fe6e426fb98a5f8ae03ca5720998db5267b16c29c834c50ddff75043d00a to the queue of both viabtc and antpool (just a couple miniutes ago). So if either of those pools mines their next block, fc99fe6e426fb98a5f8ae03ca5720998db5267b16c29c834c50ddff75043d00a should be in there... No guarantees tough, but it should be allright in a couple of hours!
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Submitted to viabtc. The problem should be fixed when they mine their next block. If its not done by the time i get to the office, i'll also push it to antpool.
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can we cancel a transaction? i have one transaction and it is unconfirmed, but i made it two days ago, can i cancel it and make again?
you can't cancel a transaction in the literal meaning of the word... There are 2 things you can do tough: 1) stop rebroadcasting the transaction, and wait untill most nodes drop it from their mempool 2) double spend the inputs that were also used in the stuck transaction in a new transaction with a higher fee. how to stop rebroadcasting? and if i stop it, the bitcoin i send will come back in my wallet? It depends on the wallet software you're using. After 72 hours, most nodes will drop your unconfirmed transaction from their mempool. If you don't rebroadcast, the transaction will either confirm, or it will be dropped from the mempool of most nodes. However, as long as the transaction is in the mempool of a single mining node, there will always be a small chance it will confirm. is this will make our fund back to our wallet? It should.. However, i've noticed some wallets need to be "repaired" or "rescanned" for them to re-add the unspent outputs to your balance.
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-----BEGIN PGP MESSAGE-----
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This message was encrypted using my pgp key and contained all data necessary to help the poster. His problem should be fixed next time antpool mines a block.
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After consulting with a couple of knowledgeable members, i decided to put up this disclaimer: Disclaimer: I cannot help you without knowing a basic amount of information (like the transaction id, which addresses in the transaction belong to you and which wallet software you use). However, everybody should realise this is a public forum... Everything you post on this forum is world-readable, and can be analysed by anyone. Furtheremore, using datamining, it is possible to discover more wallet addresses as soon as you're combining outputs or using change sent back to your own wallet. This should NOT be a security issue, unless you're involved in illegal transactions, you have so much BTC you're in danger of being robbed or if you're a very privacy-concerned person. If you belong to either of these 3 cases, this service might not be suited for you!
*New*: As suggested by DannyHamilton, i will also accept pgp encrypted messages containing all requested information... This way, only HCP and I will be able to decrypt your data, and so we're the only one that needs to be trusted...
The use of pgp encryption is optional... As a matter of fact, since decrypting the data is an extra step i have to take, there's a reasonable chance users who posted unencrypted data will get priority.
update: messages encrypted with this new public key can be decrypted by both HCP and myself:
-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v2
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mocacinno,
I'm not sure how familiar you are with using encryption tools such as GPG, but you might be able to reduce some concerns others have about revealing wallet and address information publicly if you include a public key in your top post and offer to accept encrypted messages in your service thread.
Obviously YOU would still have access to all the requested information, which may be a concern for some, but at least the information wouldn't turn up on internet search engine results or be available for others to read without your permission.
On the other hand, my guess is that most of the types of people that will need your help aren't going to know how to use your public key to encrypt their post anyhow.
Actually that's a great idear ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) As a matter of fact, they can use keybase.io as an easy way to encrypt their messages. But you're right, i'd still be able to decrypt them, and it would be an extra step i'd have to take... I'm defenately not against it tough. Also, HCP said he'd help me out, so it would be best if the users encrypted their data twice (with both our public keys), and posted the identical data encrypted with each seperate public key. (don't know if HCP is willing to do this, but i'll ask him). I'll update my OP when i'm back at the office!
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@Iranus: thanks for the reply ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif) @Lauda: If somebody still needs my help, you can always contact me in PM ![Wink](https://bitcointalk.org/Smileys/default/wink.gif) After reading both replies, i still don't understand why this user reacted the way he did... After reading Lauda's reply, i now realise that it might be better to rephrase my thread's OP to clearly indicate that everything posted on a public forum stays there forever, and can be used to measure somebody's wealth... However, i still fail to see why i was called a scammer and red-tagged. I tried responding to the user tagging me by replying to his post, but he didn't even bother to reply, just got out his red paint and smeared my name. EDIT: I have now added following disclaimer at the top of my OP... I hope this is sufficient: <disclaimer> Disclaimer: I cannot help you without knowing a basic amount of information (like the transaction id, which addresses in the transaction belong to you and which wallet software you use). However, everybody should realise this is a public forum... Everything you post on this forum is world-readable, and can be analysed by anyone. Furtheremore, using datamining, it is possible to discover more wallet addresses as soon as you're combining outputs or using change sent back to your own wallet. This should NOT be a security issue, unless you're involved in illegal transactions, you have so much BTC you're in danger of being robbed or if you're a very privacy-concerned person. If you belong to either of these 3 cases, this service might not be suited for you! </disclaimer> If this disclaimer is sufficient, i guess it's only my pride that's been hurt a little bit (yup, i'm a bit butthurt ![Grin](https://bitcointalk.org/Smileys/default/grin.gif) ), but that's not the worst thing that's happening in todays world.
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Hi, my electricity rates are about $0.08 /kWh. I have also considered the prices of a PSU, shelving, and other ordering costs and understand that there will be some extra fees, but I think I have more than enough money to be able to afford those things.
@8cents/kwu, at this diff, block reward and BTC price, an S9 will make ~$375/month http://www.coinwarz.com/calculators/bitcoin-mining-calculator/?h=14000&p=1400&pc=0.08&pf=1&d=595921917085.41600000&r=12.50000000&er=2600.60210000&hc=0.00Do realise that in my country, the import costs are over $300 for an S9... I don't know about your country offcourse. If you really want to mine BTC, i think at 8 cents/Kwu, the S9 would be one of your best options, however, if it's a bad batch, and it breaks (even while on warranty), there's a chance you won't break even... A different path might be to buy a couple of good GPU's and start an altcoin mining farm, or maybe one of the X11-X15 ASIC's that hit the market a while ago (Baikal).
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