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9741  Bitcoin / Mining / Re: Generate power from thermoelectric generator on a miner on: July 22, 2015, 03:56:20 AM
A lot of you guys are doubters, say that its not worth it. Screw the haters. I just placed an order for sidehack's usb miner, and I just placed an order for a fucking peltier device. Cost me 2 bucks on aliexpress.

Game plan:
  • Take off the heatsink
  • Duct tape on a peltier module
  • Let the magic happen

I have no idea what I'm doing when it comes to electronics, but next month I will come back to this thread, and I will fucking deliver. With pictures of the miner I probably just destroyed.
That is a cooling device right? It is similar, but not what I was talking about. I don't think that it is able to convert the heat to electricity, which is what a Thermoelectric Generator does.

How about a stationary bike that generates energy as you exercise?  This helps you lose weight and generating energy at the same time?
You can mount a bike onto a device that makes it stationary and is a generator. One of my friends has one. It can power a light bulb and provides exercise.
9742  Bitcoin / Project Development / Re: Need investor in BTC faucet on: July 22, 2015, 03:53:40 AM
I would be willing to invest, but I need more details. What website is this? Can you prove that you are the owner? How can I guarantee that you repay me?
9743  Bitcoin / Bitcoin Technical Support / Re: Having trouble with wallet.dat when generating with walletupdate over json-rpc on: July 22, 2015, 03:47:50 AM
@knightdk - Yes thats the manual way, but I donīt want to do this over ssh every time when I make a backup -  so the controlling should be only over the local webserver.

I search for a way to do this without write a program. Whats about a chronjob?
You could use a cronjob to execute a script. It could run periodically to both backup the wallet and change the owner.

Actually, why don't you just restart the bitcoind as user www-data? Then the back up file will also be owned by www-data. You would only need to change the owner of all of the files in the datadir to be www-data.
9744  Bitcoin / Bitcoin Technical Support / Re: Having trouble with wallet.dat when generating with walletupdate over json-rpc on: July 22, 2015, 01:29:46 AM
ssh into your server and use the chown command to change the owner of the wallet.dat to be www-data. In the /www folder, the command should be run as root, since root is the owner, and it should look like this
Code:
chown www-data:www-data wallet.dat

Now I really hope your wallet is encrypted because anyone who can access that webserver can download your wallet file.
9745  Bitcoin / Bitcoin Discussion / Re: Your first bitcoins came from.. (faucets aside) on: July 21, 2015, 07:37:59 PM
My first Bitcoin came from a sig campaign and doing stuff for people on this forum.
9746  Bitcoin / Bitcoin Technical Support / Re: Changing file name wallet.dat on: July 21, 2015, 07:32:48 PM
You can change the name of the wallet by using the -wallet flag every time you start the program. Something like this:
Code:
bitcoin-qt -wallet=newwallet.dat
Thanks, where can I type
Code:
bitcoin-qt -wallet=newwallet.dat
? Guess it's not in de debug console? Or is it via bitcoin-cli?
You do that when you start up the program. MZ posted above where to do that. In Windows, right click the shortcut for Bitcoin Core. and click properties. In the box where it says target, add
Code:
-wallet=<walletname>
at the end of the what is already there. Make sure there is a space before the dash. <walletname> is whatever you want to call the wallet. Click OK and then double click the shortcut to start Bitcoin Core.
9747  Bitcoin / Electrum / Re: HELP!!! BTC LOST after transfer from Electrum on: July 21, 2015, 05:24:40 PM
Are you sure that you had entered the right address? Where was the Bitcoin supposed to go? Looking at that transaction, it has been confirmed for a while, so whoever received has already received it and you should no longer see the amount you sent in your wallet.
9748  Bitcoin / Bitcoin Discussion / Re: Safety awareness of bitcoin users on: July 21, 2015, 03:38:49 PM
Will we get to see the results? There are many surveys and research things that go on in this forum and not many share the results. Please share the results with us.
9749  Economy / Service Discussion / Re: Stolen Bitcoin on: July 21, 2015, 02:24:13 PM
You probably got infected with some virus that either made the transaction for you or logged the password and the attacker stole some Bitcoin. I wonder why they didn't take all 14 BTC and only took 1?
9750  Bitcoin / Bitcoin Technical Support / Re: Need someone to build me a qt from github files with some changes I made. on: July 21, 2015, 02:07:53 PM
I can do it for a fee. PM me if you want.

Is that link the official source link? Do you have the link to a github or source repository? I would prefer to download the source from the source, not a third party.
9751  Bitcoin / Bitcoin Technical Support / Re: Bitcoin RPC command to export CSV file on: July 21, 2015, 01:58:53 PM
I don't think that is possible to do in the console.
9752  Bitcoin / Bitcoin Technical Support / Re: Changing file name wallet.dat on: July 21, 2015, 01:53:06 PM
You can change the name of the wallet by using the -wallet flag every time you start the program. Something like this:
Code:
bitcoin-qt -wallet=newwallet.dat
It changes the name of the wallet but also needs to have that every time you run Bitcoin Core so that it doesn't create another wallet.dat file.
9753  Alternate cryptocurrencies / Altcoin Discussion / Re: Bitcoin WILL die. What is the best alternative? on: July 21, 2015, 04:42:37 AM
In reality, the entity would need 80, 90% or higher in order to successfully pull off such an attack. In the network's current state, that would be prohibitively expensive.

A flash jump in a fiat currency could enable the (more than less) trivial purchase of a substantial quantity of coins. These coins, alongside others acquired via (perhaps, "illegal") seizure and other, governmental mechanisms, could enable a governmental body to maintain instability in the exchange rate of the coin relative to the given fiat currency. This volatility could motivate a wider userbase of the given fiat currency to forsake any break therewith that said coin might, otherwise, facilitate.
I wasn't talking about the number of coins, I was talking about the hash rate. They would most likely need 80 to 90%or higher of the hash rate in order to successfully pull off such an attack that could stop Bitcoin. To get that much mining equipment and to maintain it all and to continuously mine to shut down bitcoin would be prohibitively expensive. The costs of running such a large mining operation would be too much.
9754  Bitcoin / Bitcoin Discussion / Re: Best wallet for cold storage on: July 21, 2015, 03:33:59 AM
Try Bitcoin Armory. It is very secure. Otherwise, I would recommend you use a hardware wallet such as Trezor.
9755  Alternate cryptocurrencies / Altcoin Discussion / Re: Bitcoin WILL die. What is the best alternative? on: July 21, 2015, 03:06:58 AM
Actually an anti-bitcoin entity could perform a 51% attack without buying too much equipment. If I were a government or other such entity and looking to perform a 51% attack I would look into opening up a bitcoin mining pool. They could just payout higher than average and miners would slowly begin moving over to that pool. If you are making y bitcoin per xxx hashrate and I start a pool offering y+20% bitcoin per xxx hashrate, there is no doubt people would start moving over.

With all the cloud-hashing schemes and other scams out there, most people wouldn't even question how is possible for such high payments. Others would suspect something, but most would not care as long as the payments kept flowing in.

So at roughly 144 blocks per day * 25 BTC reward * $300 = $1.08 million per day currently mined. So they offer extra 20% would only cost them ~$200,000 a day. Actually it would be quite a bit less since it would take time to build up a loyal following of miners and they would only need 51%. So only toward the end of the operation would they be paying out in excess of $100,000 a day, They could probably start the operation with just a few thousand a day as people first started to move over.

So the question would become how long until they could convince enough people to move over. If only 30-45 days, I think they could pull it off for around $2-3 million. Heck this is low enough amount where even a large company or high net-worth individual might try it on their own... Thoughts?
As people begin to migrate over, the community will see that this pool is gaining almost 51% of the hash rate. Then a shitstorm will ensue and that pool will lose those miners. Just look at what happened when Ghash.io almost had 50% of the mining power. They lost a lot of miners and the miners went to other pools to keep any one pool from getting 51%. The anti-bitcoin entity would have to get its own miners and mine by itself to get 51%. Also, if such an attack succeeded and discredited Bitcoin, then all of those Bitcoin they mined are worthless and tons of money was just wasted.

It is likely that they wouldn't succeed so hey, the government or whoever just made a lot of money that they can now use and maybe instead of attacking Bitcoin, they can adopt it and use it.

51% is not some magical number that as soon as someone gets 51% of the hash rate, they suddenly have full control over the blockchain. It doesn't work like that. What 51% means is that the miner has a majority of the hash rate, which means they have a higher probability of finding over half of the blocks. In reality, the entity would need 80, 90% or higher in order to successfully pull off such an attack. In the network's current state, that would be prohibitively expensive.
9756  Bitcoin / Bitcoin Discussion / Re: Real World Scenario - Question on: July 21, 2015, 02:40:09 AM
You could use a remote desktop software and remote into your computer at home to send funds from there to your phone.

You could also carry a few paper wallets or simply keep more Bitcoin on your phone.
9757  Bitcoin / Development & Technical Discussion / Re: One-time signatures to prevent double spends on: July 21, 2015, 02:37:08 AM
How would this work with address reuse? If someone sets up a donation address, then they can't send Bitcoin from it without having to change the address or reveal their private key.

Also, I don't see how this discourages double spends. If a double spender sends out his two transactions in the traditional race attack, then one will reach some miners, the others will reach other miners, if at all. However, only those nodes that receive both will know that a double spend occurred and only they can get the private key. Those nodes will not broadcast the double spends (unless they are Bitcoin XT) so the double spend transaction won't reach some of the miners. Those who do know the private key after receiving those transactions are at a disadvantage since two transactions have already propagated faster than their own double spend can. Unless they are a miner, then knowing the private key would be pointless.

And with miners, if they don't receive the double spend transaction, how do they know that a double spend occurred? A smart attacker could simply broadcast the transaction to specific nodes, nodes that he controls, so that the miners only get one transaction and other nodes before them filter out the double spend. That way, the miners can't get his private key and anyone who does get it can't do anything with it.
9758  Bitcoin / Bitcoin Discussion / Re: Mainstream Adoption on: July 20, 2015, 10:03:26 PM
In all honesty, Bitcoin is not yet ready for mass adoption. Don't get me wrong, minimal fees are great. However, this feature is overshadowed by all the hoops and obstacles companies have to go through to deal in Bitcoin, as well as the lack of fraud protection and overall user friendliness.

Why is it not ready? And there doesn't seem to be any hoops or obstacles. All they need to do is accept it which is simple to integrate whether you're an online store or brick and mortar shop. Fraud protection will be covered by a payment processor too, not that they have to worry about that much unlike credit card companies.
It is still an alpha software. Bitcoin Core is still alpha and hasn't even reached version 1.0 yet.
9759  Bitcoin / Bitcoin Technical Support / Re: Bitcoin Sync is not moving anymore ? 39 hours on: July 20, 2015, 06:11:13 PM
Are you sure about your first statement ? I'am using probably Bitcoin Core for almost a year now and each time I reboot the PC while it's running and boot it back I found the database corrupted , and it begins from 6 years behind xx weeks .
Same goes if I close it normally and I don't wait for that window to close alone , sometimes I even wait it then reboot but I find it corrupted , I guess I will understand how that shit works .
That usually indicates a problem with your computer. It corrupts when you shut down the computer since it doesn't fully close and that corrupts the LevelDB database. It should be find when you close it properly. If it isn't then you might have a hardware issue.

for the peers , I'am not sure what that means , do you mean Active connections ? then it's 8 . I used to run a node
Go to Help > Debug Window and tell us how many connections there are next to "Number of Connections" Then go to the Peers tab and check each of the connections and make sure that they have a ping time and that none of their information fields says "-1"

I'am not sure about the paths of those dump files or whatever .
So for the number of connections it's as I said 8 , on the Ping time it says : "N/A" and when I click on one of the rows for more informations I get "-1" on the starting height . What does that means


That means that you aren't actually connected. Check to see if your firewall or something is blocking your connection. Check the firewall for your computer and the firewall on your router. Also try connecting to other nodes. There is a list somewhere on this forum of good nodes to connect to and try to connect to them.
9760  Bitcoin / Bitcoin Technical Support / Re: Bitcoin Sync is not moving anymore ? 39 hours on: July 20, 2015, 06:00:28 PM
Are you sure about your first statement ? I'am using probably Bitcoin Core for almost a year now and each time I reboot the PC while it's running and boot it back I found the database corrupted , and it begins from 6 years behind xx weeks .
Same goes if I close it normally and I don't wait for that window to close alone , sometimes I even wait it then reboot but I find it corrupted , I guess I will understand how that shit works .
That usually indicates a problem with your computer. It corrupts when you shut down the computer since it doesn't fully close and that corrupts the LevelDB database. It should be find when you close it properly. If it isn't then you might have a hardware issue.

for the peers , I'am not sure what that means , do you mean Active connections ? then it's 8 . I used to run a node
Go to Help > Debug Window and tell us how many connections there are next to "Number of Connections" Then go to the Peers tab and check each of the connections and make sure that they have a ping time and that none of their information fields says "-1"
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