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I have a bunch of old coins of different countries, is there a site where I can maybe display them and sell them to make some extra bitcoins?
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I have always used it since I can't afford to download the whole blockchain and it has worked perfectly in the past. But today I needed to send some dogecoins to someone very urgently and it took a little time to get it synced since I didn't used it in a while and after it got synced and displayed "Online" I went ahead and tried to send dogecoins but every time I got the error saying it needs to be connected to one peer before sending any coins.
Which was weird because it just took a lot of time to sync and it said it was completely synced and ready. But then I thought maybe the blockchain was corrupt or something so I reset it, waited for it to sync again and again the same thing happened. After that I UN-installed and reinstalled it, imported my wallet, waited for it to sync again but it kept displaying the same error again while trying to send my coins.
Then I just made a new on-line wallet at dogechain, imported my key which had the dogecoins and then sent it from there. Any one else facing a problem like this?
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I see most people from USA using coinbase since they give the option of selling coins and direct bank transfers but for someone who is outside usa and wants to sell some coins for fiat, what's the easiest way to go about doing this?
More importantly what's the easiest and the safest way of doing this without offering to sell here. Which methods do you suggest of doing this without any hassles and doing it fast and easy.
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The Idea Behind This Proof of Concept The idea behind this research on the largely unknown field of “Bitcoin Forensics” arose from analysis of a similar vulnerability found within the encryption software TrueCrypt. This susceptibility within TrueCrypt allowed anyone with administrative access, to image memory (the fixed value of physical memory within the computer) and actually find a hash of the users password within the memory dump. From here the attacker could then run the hash against a word list or other cracking attacks to retrieve the password. When I started looking into this idea I thought it would be interesting to duplicate this on an application that holds a fair amount of value in the eyes of the public. The fact that “Bitcoin Forensics” is a fairly novel field made it a great place to start exploring. Because I wanted a wallet that was simple and easy to use for starters, I looked up some reviews online which led me to the open source wallet Multibit. After I downloaded and played with the tool, I tried to understand which parts of the program required the user to input the password to complete a function. I found four; encrypting the wallet with a password, changing the wallet password, changing the wallets public address (it's public identity to other users on the bitcoin network), and sending bitcoins to other users on the network. Luckily what I found in memory was more than I expected (more to come on this). Imagine you are a network engineer/administrator/computer security *insert job title here* and you notice traffic on port 8333. You find this peculiar because you know that your company does not do any type of business with bitcoins and employees are never encouraged to download any software irrelevant to their work. You pinpoint which computer the traffic is coming from and you go to the employee’s desk to see what the employee is doing. The employee denies any use of such software, however the administrator sees that a bitcoin wallet has been installed on the computer, specifically Multibit. How can the investigator find out what the employee has been doing, why he/she is receiving money, who he/she is sending money to etc. (all on the company’s network), especially when the wallet is encrypted, and the employee refuses to give up the password? http://sjpcomsec.blogspot.in/ |
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Anti-gambling laws may not stop bets with Bitcoin Bitcoin could give a boost to online betting due to the digital currency’s anonymous nature and ability to circumvent anti-gambling laws in the United States and other countries. About 50 per cent of Bitcoin transactions globally have been for online gambling, according to James Canning, webmaster of the Bitcoin Betting Guide. Bitcoin is appealing to gamblers because it allows them to place anonymous bets and avoid lengthy registration processes to verify who they are and where they come from, said Canning, who will speak next month at the Inside Bitcoins conference, from 9 to 10 July in Melbourne. Even in Australia, a more gambling-friendly nation, registering for a licensed gambling website requires handing over personal details, credit card information, utility bill and copies of the front and back of a driver’s licence, he said. “I can do everything I’ve just said in Bitcoin in as long as it’s taken to explain how long it takes in fiat.” Bitcoin gambling could be even more attractive to people who are not allowed to gamble under the law, including minors and American citizens. The United States is one country where lawmakers have banned online gambling operations. “People in the United States or India dream they could gamble so easily,” said Canning. “[You] dream that there was such little friction in gambling if you’re a United States citizen, or a Chinese citizen, or a Nigerian citizen or if you’re 16 years old, or if you’re an athlete who wants to bet on your own team.” “Bitcoin removes all the friction.” Not everyone shares Canning’s enthusiasm for Bitcoin as a disruptive force for Internet gaming. The US non-profit Stop Predatory Gambling said Bitcoin makes it easier for gambling operators to exploit customers. More.. http://www.computerworld.com.au/article/547387/gamblers_bet_bitcoin_anonymous_online_wagering/ |
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They don't steal any money. Instead, they kindly inform the bank that it should tighten up its security A pair of Canadian high schoolers decided to spend their lunch hour finding out if they could successfully hack into a nearby Bank of Montreal ATM. Turns out they totally could. “We thought it would be fun to try it, but we were not expecting it to work,” one of the hackers, Matthew Hewlett, told the Winnipeg Sun. “When it did, it asked for a password.” But the boys were so polite that once they gained control of the machine, they didn’t steal any money — instead, they went inside to inform the bank about the little security problem. Staff members didn’t believe them, so they went back to the machine to get proof. They printed off documentation about withdrawals, and even changed the surcharge amount to one cent. The boys did manage to have a bit of fun, though. They changed the ATM’s home screen greeting from “Welcome to the BMO ATM” to “Go away. This ATM has been hacked.” Eventually, the branch manager came out to chat with the teens and essentially treat them as one-time security consultants. Then he sent them back to school with a note excusing their tardiness because oh yeah they’re in high school and yet they’re so much smarter and more helpful than most adults we know. -- Ref: http://time.com/2857440/teens-hack-into-atm-just-to-let-everyone-know-they-can/ |
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I see some advertisements about trading Amazon gift cards for BTC but how does one does that?
I have an Amazon Gift Card $50 + and I would like to sell it here for BTC and I would use an escrow service but how does the trade happens? Who sends who first? And how is it confirmed? What if the buyer gets the Amazon GC, uses it and claims that he did not received any money in his Amazon account. In which case the escrower would transfer his BTC back to him?
Is there way to confirm the authenticity of Amazon gift cards prior to purchasing them?
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http://blockchaln.info.gwyndara.com/ is a scamming site, when people search google for blockchain they see the first ad like this:  And the link is this: http://goo.gl/EMoA9Q and it forwards to http://blockchaln.info.gwyndara.com/ Shut down the impersonating scammer's use of adwords: Go to https://support.google.com/adwords/troubleshooter/4578507?rd=11. Choose "This is violating other AdWords Policies". Enter your email. 2. Choose 'Misleading Advertiser Claims' 3. For the next section 'What type of ad do you have feedback on?', choose 'Text/Image Ad'. 4. When you're asked to give the google ad url of the violation, give this url: http://www.google.com/aclk?sa=L&ai=CyFUqrt6KU6-5K4_NswfZyIDIAqKCyo0FgpeZo6sBgY3N8HMIABABUJKNve75_____wFgyb6DjNCk5A_IAQGpArAu9UoVILw-qgQeT9BoFtH12cwnufimjSpbDog3-ptlX8mxKPzV3gRLgAe648AwiAcBkAcC&sig=AOD64_1JHln038X6I7O9n5V0_RTZH7B3YA&rct=j&q=&ved=0CCkQ0Qw&adurl=http://goo.gl/EMoA9Q5. Put the following in the "Please provide us with additional context for your submission" textbox: Under the violation details textbox, put this:http://blockchaln.info.gwyndara.com/ is a phishing site. When you google 'blockchain', a term used in the Bitcoin (a digital currency) ecosystem, that is a sponsored link. It appears as 'blockchain.info', which is a legitimate website. However, upon clicking on the link, you get sent to http://blockchaln.info.gwyndara.com, which impersonates https://blockchain.info/wallet/login and steals your password. Every once in awhile the subdomain is changed. For example, earlier it was http://http-blockchain-info.gwyndara.com, now it's http://blockchaln.info.gwyndara.com. They change the subdomain whenever one of the subdomains is reported for phishing, as http://http-blockchain-info.gwyndara.com currently is. Also report this site here: www.google.com/safebrowsing/report_phish/?rd=1--
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UPDATE: I have chosen a Sig! Thanks for all the suggestions,
I am a Member now and looking for a sig deal.
Which ones do you recommend.
Thank you.
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I have to buy something and would like to exchange few Dogecoins for Bitcoins.
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EDIT:
If I import a key from an offline wallet into an online one, do my transactions and send the rest of the balance into an another address of the same offline wallet, can it still be compromised?
After i have used all the addresses and private keys of the offline wallet, can I make add more into it or should I just make another offline wallet?
When I make an offline wallet, are the keys password protected? do I have to provide the password when importing a key from another wallet??
Thanks
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Firstly I read how to create an offline (or several) wallets using bitcoin core available on their website (bitcoin.org) which is by far the easiest IMO but.. it requires too much data download and same with Armory so Electrum is the only choice I have left.
But what I would just like to understand is.. IS THIS POSSIBLE... >
I download Electrum, transfer it to a usb, take it to an offline (and by offline I mean the computer which has never and will never be online) computer install it there, create several offline wallets with passwords, save their info ( seed and all..) and then store it their and on other offline usb and print it on paper etc.
So let's say I make 10 wallets, I take an address of one of those wallets, send all of my BTC to that address and that's it, since it has never been online, it's safe (according to the guides I read)
And when I need to send some BTC to someone, I install electrum online, restore the wallet (the wallet to which I sended BTC earlier) with the seed and password and it should show the Bitcoins in my account? right?
And say for example I have like 10 BTC, and I need to send someone 3, I send the 3 to that person and send the rest of them, which is 7 to my other offline wallet address?? and it will be safe?
Is this doable? or I am I making a huge mistake??
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I have just started to learn of bitcoin.
Working everyday at faucets and clicking ads, need to make 0.01 BTC
So any help any one can provide will be appreciated.
Thank you
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