|
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.
|
|
|
|
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 |
|
|
|
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. |
|
|
|
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) |
|
|
|
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  |
|
|
|
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 |
|
|
|
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) |
|
|
|
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 |
|
|
|
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 . |
|
|
|
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. |
|
|
|
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/... |
|
|
|
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..
|
|
|
|
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) |
|
|
|
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
|
|
|
|
|
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
|
|
|
|
They are sending this to whatever addresses they can find and even if the % success is very very low, the volume will help them fish out some profit.
Just realized the address provided is an interesting one.
1PaY ok NhuFgRSYR1jJRFkFXNmMzNheg DAd
Not sure which vanity address software he was using!
Is there even a vanity software that can find a sequence at the end of an address. i am guessing that cant be done easily? "vanitygen64.exe -r ^1PaYok.*DAd$" should do the trick... you can use any regex, so you can also make it case insensitive if you want EDIT: vanitygen64.exe -r ^1[pP][aA][yY][oO][kK].*[dD][aA][dD]$ On my laptop, it seems pretty slow to generate a private key using a regular expression, but i'm pretty sure that oclvanitygen would do the trick in a nick of time |
|
|
|
Following 3 requests were accepted, and now have a chance of getting a free invitation on friday Participant list was updated: https://bitcointalk.org/index.php?topic=1409064.msg14289748#msg14289748I would be eternally grateful if you could give me an invitation to keybase.io. I have been trying to get an invitation for a long time now - without luck :/ To this date, I was signing every single message via my bitcoin address, which I could only do on my PC. So I only had access to the signing tool only if I was at home. I have been providing various services (mainly Dropbox) on multiple forums. The customers mainly contact me on Skype, but there are many importers of me there (wtf???) and some people already got scammed. So they started asking for signed messages from me, which I had to sign when I came back home. The "collectibles" section has become the most interesting section over time for me now and I plan on buying every single coin there. I would like to be able to sign messages quickly when I start buying things worth multiple bitcoins. By giving me access to keybase.io, it would allow me to prove my identity with ease, even if I don't have access to my PC Please consider my request and I hope to hear from you soon Hi, would be a pleasure for me to have an invitation to keybase.io, if possible ofc. Why i want it? because i will need it now and in a future, Im thinking on provide some services, dunno if i will launch it now, but if in the end i do it, i will need this service I would really appreciate one of these.
I have been teaching myself PGP and now i need somewhere to store my key so this would be a big help.
|
|
|
|
reserved for the winners of the giveaway - here i'll list the winners, and i'll motivate why i picked them winners:Zeroxal => he was the only one that really looked like he already has good use for an invite okae => thinks about providing services, and will (hopefully) put an invite to good use bitkilo => i'm always happy to see people learning extra things In case one of the winners is no longer interested, these are the two runner-ups:first runner up: Indianacoin second runner up: ivanst776 Participants:bitkilookaeZeroxalivanst776mcb1221IndianacoinJustDie |
|
|
|
defcon23 invited me to keybase.io yesterday, and i got granted a couple of invites by the admin myself. A couple of them have already been promised to coworkers and to family, but i have 2-3 invitations leftover (depending on the fact if my brother wants one). I'm giving them away FOR FREE (i'm paying it forward, i got my invite for free, so i don't want to charge anything for giving away my invites) Rules to get an invite: - you have to be a full member or above (in order to avoid somebody buying or growing an account just to get an invite).
- neutral or positive trust only
- you must make a good case, tell us how you would use the invite. This is important since i want to give the invite to the members that will put them to best use
I'll pick the 2-3 people that made the best case, probably on friday (or monday in case i'm busy friday). I'll pick the people that get invited by myself, there is no appeal procedure. If you're not happy with the outcome: i'm sorry, but there's nothing you can do about it. I'm going to base the decision process on the case somebody makes, their rank and my gut feeling about the person asking for an invite. People that get picked will have to disclose their email to me in PM (since the invites get sent to this email address). This is not a first-come first-serve giveaway!!! |
|
|
|
|
Show Posts
