lurf jurv
  • Member for 9 years, 1 month
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brainwallet.org Low Entropy Generation
1 votes

I used WarpWallet. I booted my computer into Linux, copied WarpWallet off my flash drive, ran it, put in my passcode (39 random hex digits that I've memorized), and I had my address. (I triple checked ...

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Bitcoin-Qt wallet passphrase help
1 votes

No, it cannot be reset. Yes, I believe it can only include letters and numbers.

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Blockchain.info: Which address should I give for "New Shared Address"?
Accepted answer
1 votes

The one marked "Address". It will forward it to the one marked "Forward To".

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What is the longest firstbits?
0 votes

I think I found the one with the longest firstbits http://blockchain.info/fb/1234567891234567891234567891w

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How to transfer only the blockchain to a friend's computer?
Accepted answer
14 votes

Transfer everything except wallet.dat and the database folder.

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Formula for calculating daily mining earnings
Accepted answer
5 votes

Let X be hashes per second, and Y be the difficulty. Let Z be the Log base 1-1/(2^32*Y) of 1/2. Z is how many hashes it will take you to find a block, on average. Let A be the current block reward (it'...

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Bitcoin-Qt Command line - adding private key - Mac OSX
Accepted answer
2 votes

Error -4 means that you've already added that private key. It might take a while to import because it's rescanning the whole blockchain for transactions involving that address.

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A Proof of Concept for P2P Bitcoin Exchange?
1 votes

https://bitcointalk.org/index.php?topic=172705.0 I believe this is a suggestion for a peer-to-peer bitcoin exchange.

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problem with bitcoin software
0 votes

That's because it's either downloading the blockchain or reindexing the blocks on disk. There should be a progress bar at the bottom.

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How is the previous transaction found efficiently?
2 votes

Bitcoin clients maintain a list of the current unspent outputs in a hash table.

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What is the daily transaction limit for Bitinstant?
Accepted answer
1 votes

$2000 per day. Right above their captcha-like thing, it says the limits in small text.

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Transaction and Node Proximity Questions
1 votes

You add the transaction T to your (the sender's) unconfirmed transactions pool. From there on, it is treated like any other transaction. Then, your client will send a "inv" message to it's peers ...

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How do I find the public key of a bitcoin address?
1 votes

Get the private key of your address, then go to brainwallet.org, and switch the tab to Generator->Private Key, then paste in your private key. Your address should show up on the right. If it doesn't ...

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Is there any discrepency on Confirmations?
2 votes

In 99% of cases, it's because a miner has mined a block that has propagated through to the website and it hasn't reached the client yet. In the other 1% of times, it's because there has been a block ...

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What factors determine how long confirmation takes?
2 votes

How many miners are currently mining, how fast they are mining, how much of a fee you paid, and whether you're a well connected node or not (only matters for first confirmation).

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Where is the number of Bitcoins limit specified?
Accepted answer
3 votes

Every 210000 blocks, the reward for mining that block halves. It started out at 50BTC and now it's at 25BTC. Eventually it'll get to zero and no more bitcoins will be made.

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What is proof-of-work?
Accepted answer
12 votes

Bitcoin miners find a random number (called a "Nonce") that when inserted into the current block makes the hash be below the current target. They then send that current block around the network and ...

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How to use block and transaction hashes for generating simple stochastic chances?
1 votes

Here's the way SatoshiDICE does it: SatoshiDICE has "secret keys" for each day which they pre generated for the next 10 years. They published the hashes of those keys so you can verify they didn't ...

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How does the blockchain.info shared receive work?
1 votes

The Shared Recieve is also a mixer. When you get a new shared address, it will also show the "Forward To" address which will be one of your main addresses. If anyone sends bitcoins to that shared ...

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What are good ways to storing backup of an encrypted wallet?
Accepted answer
1 votes

You can back it up pretty much anywhere. USB drive, backup hard drive, Dropbox. If your wallet is encrypted, all they can see is what addresses you own and how many bitcoins they have. They cannot ...

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How to make a Hidden Tor Bitcoin Mixing Service?
1 votes

BitcoinFog is popular and has been around for a few years. If you really want to make your own, you'd need a dedicated server, Tor (for the hidden service), web server software like Apache, and ...

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"Failed to read Block"
1 votes

If you backup the wallet.dat file, then you should be able to remove everything else, and then Bitcoin-Qt will redownload the block chain.

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Noob question: will a slow rig get coins ever?
0 votes

If you join a mining pool, like Slush or Deepbit, you will still get a tiny revenue. On a regular computer (with none of that GPU/FPGA/ASIC stuff), you get 0.7-1.5 MHashes per second. You'd get about ...

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Transaction delayed >12 hours by Satoshi Bitcoin client
1 votes

That transacation has over 1,400 confirmations. I think you might need to run your client with the rescan option on. (That rescans the blockchain for transactions it might have missed)

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Is it possible to send bitcoins without paying a fee?
4 votes

If you're comfortable with putting your private key in JavaScript, you can go to brainwallet.org and under the transactions tab, you can hand craft a transaction message where you set the fee to ...

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How to debug a long "0/unconfirmed" status in the bitcoin client?
1 votes

If a transaction has been unconfirmed for three days, clients will delete it. This generally happens when you force a zero transaction fee.

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Can I synchronize the blockchain on one computer then transfer the files to another?
2 votes

Yes. Simplify go into the Bitcoin folder and copy every thing to the new computer. (Make sure you keep wallet.dat safe)

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Transaction shows up as sent, but was never recieved
Accepted answer
2 votes

I just had to run getrawtransaction on the transaction ID (from the transaction list) then run sendrawtransaction on the result.

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How can I test and verify a vanity key before I send coins to it?
1 votes

If you don't want to do it online, you can try to import the private key into Bitcoin-Qt then see if the matching public key is the one you expected.

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Bitcoin QT wallet doesn't sync
0 votes

Did you include the transaction fee? If you don't, most miners won't accept it. The same thing happened to me. Also, you need to wait until it syncs. You can check if it's been included by going to ...

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