....on the send tx pg my tx is gone but there is a file by the QR code. when opened it adds this: #!/usr/bin/env xdg-open to the pay to box. Please help.
electrum 254, on tails tried auto and non, plus many servers. Thanks.
I have some troubles understanding you... Is it correct: - you're running electrum 2.5.4 - you tried to pay somebody, but cannot see the transaction in the history - electrum created a file? when trying to pay somebody? My questions: - it seems you're running linux ((#!/usr/bin/env), which flavour, how did you install electrum? - can we get the transaction id, or at least the address from which you tried to send coins? |
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It's simple economics:
If a company invests x coins into a sigcampaign, and can make 2x coins from the ads in return, it's a good deal... But if they cannot make a profit with the traffic generated from the sig space, they just shut down their campaign.
Seems like the amount of profit generated with sig traffic went down, so a lot of them closed up shop...
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This assumes the difficulty doesnt change in 170 days? Like it jumped 180% the last 170 days.
This is why i clearly put it in my assumptions... I know it will change, but not by how much, so for the sake of the calculation, i kept it at the current diff, but i clearly indicated this fact so the OP knew he had to think about this. It also assumed a old price on S7's. Take new price of 582 - 100 dollar coupon. Your talking a brand new S7 for 482 or so plus shipping... so a decent decrease in price.
So this does change the price of gear a good amount. You are right about difficulty though we don't know if it will be a smooth ride of next gen comes out and just adds ton of has... time will tell.
I didn't think about coupons, good point  ^^^^^^^^^^^^^^^^^^^
You need to add shipping cost and POWER SUPPLIES cost. Diff will jump quite a bit now that Bitmain has lowered the S7 price and all the fools will jump in and buy them.
I did add shipping costs, but forgot about PSU's, thanks for adding this... All in all, i think my calculation still paints a picture for the OP, it wasn't meanth as a guarantee of income, and i did add a lot of assumptions at the top, so the OP should know this is a guesstimate, and can change if any of the assumptions change |
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I have two invites that anyone can have. Shoot me a message.
Thats nice of you thanks mate.I'm sure the runner ups will appreciate it. How does everyone get these invitations, if you get a couple with new accounts then I would be happy to give away any that I receive on sign up. Well... I guess it depends on your activity... I verified almost all my accounts, and immediately got 8 invites. My brother just added his BTC addres, and didn't get a single invite so far. It's just a guess, but i think it has something to do with the activity. |
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Also, you have to realise a lot of those <100$ transactions will probably be coins being sent back to a change address of the original sender... So it'll be pretty hard to know how much money actually changed hands.
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The three winners are known, i'll PM them right away.
If the winners do not respond to the PM's by tuesday, the invite(s) will go to the runner up.
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hello guys,
i am freebitcoins.site owner.
running sucesfully since 6 months but until now i dint got good profits , i hope i have bots i am unable to find them, could you please help me how to find bots and how to find real users
so it might really help me a lot , please help me guys
This topic should help you out: https://bitcointalk.org/index.php?topic=1211353.0 |
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Thank you but in which step i transfer my existing bitcoins to paper wallet that i created?
Can i permanently store in usb stick instead of printing?I think that would be more safe as paper can sometimes be easily lost or damaged.
Steps: 1) create the paper wallet, print it (or keep it on your usbstick) 2) scan the QR code of the PUBLIC key with your mobile, mail it to yourself, DO NOT scan your private key 3) transfer your funds to the public key (address) of your paper wallet, double check your public key before sending your coins 4) safety If you ever need the funds: 1) install a mobile wallet on your phone 2) sweep the private key 3) use your coins, transfer the leftover ammount to a safe wallet (preferably a new, unused, paper wallet) You CAN store the USB stick instead of printing it, but be warned: even an USB stick has an expiration  . Personally, i have printed my paper wallets (BIP38 encrypted), laminated them, and gave a copy to my brother to keep in his house. |
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Please tell me any safe paper wallet generating service that actually does not have access to the private key that they put on the paper?
I've already told you. Bitaddress.org or their source code: https://github.com/pointbiz/bitaddress.org. It is impossible to transmit the private key over internet without internet so use it offline. However, they can still affect the entropy of the private keys so do review the source code and compile it yourself if possible. How to compile it my salf? i am new to paper wallets so pleasr guide me sir bitaddress.org's sourcecode is javascript, it runs from your browser.... Just go to the link ranochigo gave you, download the sourcecode (as a zip file), unzip it on a CLEAN OFFLINE computer, open bitaddress.org.html with your browser, follow the wizard, print your paper wallet as pdf on a usb stick, print the pdf on an offline printer that accepts pdf on usbsticks, erase the usb stick, restart the printer, restart (or even reinstall) the pc => safe PS => for the really paranoid: - BIP38 encryption is a must - you can run a linux live cd for these steps - removing the pdf from the usb stick isn't good enough, overwrite the device by random characters several times (TIP: dd if=/dev/urandom of=/dev/sdd1 in case your usb is on /dev/sdd1) |
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There is no evidence that they would delete the private key. Even if they do, someone could have kept a record of it.
Yes. Bitaddress.org code downloaded and ran on a off line linux computer would be the best option since no one would have access to the private key except you.
^^This is a great answer The only thing i wanted to add: if you use bitaddress and generate a paper wallet offline, you can easily work the other way around, and import the private key from the paper wallet into blockchain if you ever feel the need to do so. You do have to realise your private key is "compromised" as soon as you use it on any pc that is connected to the internet, so you should do your business, and transfer the rest of the coins back to a fresh paper wallet ASAP. The process is pretty easy to finetune, since a couple of those offline paper wallet generators can generate a paper wallet for the testnet, so you can easily experment without risking your coins  |
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I want an online wallet
Blockchain.info something that is independent and provides backup
you can export your private key from blockchain.info if you want to can't steal the bitcoins even of they shut there service and when they do shut there service i should be able to easily restore my wallet
I don't think 100% security will ever exist... An online wallet is way less secure than a hardware wallet, a paper wallet or a cold storage wallet. I don't think there are exceptions |
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Im thinking about starting mining, since i have access to 3 apartments with free electricity. But i dont have the biggest budget to get started with, so im still thinking about if its worth it. I hope you guys can give me some opinions. Thanks Like a couple other guys already said: if you have a GPU, you might as well use it to mine some ALTcoins. I presume it would be best to benchmark your setup for different hashing algo's, and plug the results in here: http://www.coinwarz.com/cryptocurrencyThen mine the coin that gives you the highest return. You can also opt to buy an sha256 (bitcoin, peercoin,...) or scrypt (litecoin, dogecoin,...) ASIC or a new/used GPU. In case of an scrypt ASIC or a new GPU, you should look up the hashrates and plug them into the link i gave earlyer... Be carefull for block halvings, price changes and initial costs for buying/setting up the hardware. If you buy a sha256 ASIC, be carefull, bitcoin blocks will halve in a couple of months, the price might fluctuate and the diff might rise. You can find the hashrate of allmost every piece of hardware here: https://en.bitcoin.it/wiki/Mining_hardware_comparisonAnd you can plug in the numbers here: http://www.coinwarz.com/calculators/bitcoin-mining-calculatorAs a final note: free electricity does only mean guaranteed profit in case you are only using free hardware. If you have to buy hardware, there is a chance you'll never ROI, even with free electricity. Most cryptocurrency have block halvings, price fluctuations and diff fluctuations. When buying hardware, also include cumstom charges. Also think about the fact that a lot of ASIC manufacturers only give a couple months of guarantee on their hardware (lots of GPU producers give 1-2-3 years of guarantee) |
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Accepted, added to the list... Be carefull tough: if you do no specify how you'll use the key, there is little chance you'll win this one i would join on this .
thanks !
Can I get a free Keybase.io invitation? I want to establish my online identity with it. It will also be useful for me to encrypt some sensitive messages (like personal contact details, address etc.) which might be needed during a trade. (for example buying some physical goods and stuffs like that) I will be highly obliged if you consider me in the giveaway |
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up until now i've only been using online wallets like blockchain.info. i was browsing the forum and stumbled on this; as a precaution i decided to get a desktop wallet, post my address here and just be more responsible with my coins, in general. i went straight to bitcoin.org and looked up osx desktop wallets there. bitcoin core is out of question because of the 50+GB download! the 2nd and the 3rd wallets there were MultiBit and Electrom. did some digging on their websites. other than the usual we're the best and the safest on the home page, what i've found was lengthy technical documents. i'm not being lazy just a bit too busy for my own good! which one of these two do you recommend and why? what are they're distinguishing features? is there a big difference at all? are there any other wallets i've missed? that might be better than these two? and why? p.s. i'm only looking for osx wallets! I'm a big electrum fan, i like the interface and the fact that i have to enter my password before signing a transaction. I also like their coin and address controll, their plugins, the fact that i can have a downloadable version, the fact that i can have a mobile version, the fact that i have several servers to chose from, the importing/exporting private keys, HW wallet support,... AND the fact that they're free (Multibit HD actually charges a very minimal developers fee). On the other hand, Multibit HD is a fine piece of software to, i just like electrum better . |
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Hello,
I have been wanting to get into mining for a while now and was wondering if I can get some advice. I want to invest about 2-4k into this project and was wondering what the most profitable way of doing so would be. I do live in an area where solar power can be done ( just have to find how much power i would need )so what advice do you have? I will be able to drop another 2 -4 k ( not including what profits I get from mining)"farm" every 12 or so weeks. My goal would to be able to have a good profit margin after a year or so
There are a lot of variables: -what is your electricity rate -what is your technical knowledge -what do you know about bitcoins -do you have a space for mining equipment: it consumes a lot of power, and generates a lot of heat+noise If you can answer these questions, we can probably give you some hints on what to read/study/buy/... My electrical rate is 0.0295per kwh during peek My technical knowledge is some what high. I am a software developer and have above average hardware knowledge. From what I understand about bit coin is you use your "device" for computing power to mine(gets harder and less reward over a given about of time.) It is more profitable to join a mining group. I do have space for the rigs Amph is also giving some good advice, but in case you're really interested in bitcoin mining, this will help you out: Assumptions: - you have bought 4 antminer S7's @ 600 USD/piece + 21% VAT + 500 USD transport (i don't know where you are from, so i just guessed) => total cost = ~3400 USD
- your electricity rate is 0.03 all the time
- you're pool mining (this hashing power isn't good enough for solo mining)
- you have no extra cost
- the diff didn't rise
- the price didn't move
- the blocks didn't halve
http://www.coinwarz.com/calculators/bitcoin-mining-calculator/?h=18920&p=5689&pc=0.03&pf=0.01&d=165496835118.22600000&r=25.00000000&er=419.00000000&hc=3400Now, the break-even point would be 170 days... This is not good, because in about 3 months, the ammount of bitcoins per block will halve, so your break-even point would be well after this break-even point. Also, 170 days is a long time when predicting the future of the bitcoin price. This calculation means that mining would actually be a gamble... You can do it, and it can be profitable, but there is no guarantee whatsoever. Maybe you can buy some really cheap second hand hardware, and try to break even before the halving... I didn't do the calculations tough. |
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Hello,
I have been wanting to get into mining for a while now and was wondering if I can get some advice. I want to invest about 2-4k into this project and was wondering what the most profitable way of doing so would be. I do live in an area where solar power can be done ( just have to find how much power i would need )so what advice do you have? I will be able to drop another 2 -4 k ( not including what profits I get from mining)"farm" every 12 or so weeks. My goal would to be able to have a good profit margin after a year or so
There are a lot of variables: -what is your electricity rate -what is your technical knowledge -what do you know about bitcoins -do you have a space for mining equipment: it consumes a lot of power, and generates a lot of heat+noise If you can answer these questions, we can probably give you some hints on what to read/study/buy/... |
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both entries have been accepted and have been added to the list of participants I would like to have a profile over keybase, add me to list of participants. Let me try my luck.
Thank you.
I really want to give a try to keybase.io. as I heard so much about keybase.io and seeing their daily growing users. I decided to get an account but without invitation I can't get access.. so I hope you'll remember me in next friday when you got more invitations..
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Indeed, i'm going to do so. The missing character is not really the last character but somewhere inside the 50.
Your guys are awesome.
Sorry, i wrongfully assumed it was the last character that went missing (wrong copy/paste), but like CIYAM already said, you can repeat the step 50 times EDIT: btw: you can get the bitcoin-cli binary, connect it to blockchain.info's JSON-RPC API in case you don't want to sync the whole blockchain: for i in `perl -e '$,=" ";print +(A..Z),(a..z),(0..9)'` ; do bitcoin-cli -rpcconnect=rpc.blockchain.info -rpcport=443 -rpcssl -rpcuser=YourWalletIdentifier -rpcpassword=YourPassword importprivkey "yourkey"$i ; done Just be carefull: i'm not sure if blockchain will ban your ip after x ammount of tries ALSO: sweep your wallet and move your funds to a secure wallet once you've used blockchain's API, i would personally not trust an online wallet.... (btw: the approach is untested) |
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i'm sorry i'm not a programmer  , any open source tool available to do that? Do you have bitcoind running on a linux server? In that case, something like this might work: for i in `perl -e '$,=" ";print +(A..Z),(a..z),(0..9)'` ; do bitcoin-cli importprivkey "yourkey"$i ; done
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Pretty easy to hack something together in bash or perl, just loop trough all the characters, add them to the end of your private key, and try to import them using JSON-RPC, either into bitcoin core or to blockchain.info
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