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10
votes
2answers
8k views

What's a good resource explaining the best ways to buy Bitcoin (noob friendly)?

We have a slew of questions about specific regions ... but I couldn't find a general, concise, good resource on how to buy Bitcoins. This article offers too many choices and isn't noob friendly. I ...
5
votes
2answers
14k views

How to start pool mining in Linux

I have read numerous how-to and tutorials (most of them outdated) on how to simply start mining on a pool and I wasn't be able to do it. Could someone simply describe/enumerate how can someone start ...
2
votes
0answers
239 views

Linux app (non-GUI) for benchmarking bitmining server's perfomance

Is there a Linux application that can benchmark the bitmining perfomance of a headless server ? The application could run from the shell (terminal). Up to know I have found this that requires Java.
3
votes
3answers
3k views

How do you get the balance of an address in your wallet using the rpc interface?

The current rpc interface only allows you to see either 1. The balance of the entire wallet 2. How much was received by an address (which is okay... if you never spend) Basically, I want to know how ...
3
votes
1answer
201 views

How would the network respond to an ability to crack the private keys?

I'm wondering how future-proof the BTC network security is. Suppose some technological advancement (e.g. quantum computing and/or some ingenious algorithm) were to allow easily cracking the private ...
12
votes
8answers
66k views

What are the options available to convert Bitcoin to Paypal USD?

I have, recently, started earning some Bitcoins from CoinURL.com. I want to know all the options available for converting these earned Bitcoins to Paypal USD.
20
votes
9answers
4k views

What is a good resource to help newbies choose their first wallet/s?

While editing the Bitcoin Newb Guide, I realized I can't find a single page that covers all major clients in a Newb-friendly manner. bitcoin.org doesn't seem to mention web wallets such as My Wallet ...
22
votes
7answers
21k views

Are bitcoins really immune to inflation?

I see people everywhere saying that bitcoins are immune to inflation but nobody has explained it adequately to me. I understand why bitcoins would be more or less immune to inflation cause in ...
9
votes
3answers
766 views

How can I find out if an e-wallet service uses a fractional reserve system?

A comment on this answer pointed out that the total amount of bitcoins in circulation could appear to go above the limit of 21m if wallet services use a fractional reserve system. However, in that ...
4
votes
5answers
601 views

Does bitcoin improve on “hard” currencies in any way?

Question is in the title. Anyone who's toyed sufficiently long enough on the foreign exchange understands that currencies are largely driven by sentiment or manipulated on the odd occasion. Plus, ...
2
votes
1answer
311 views

My wallet won't load because it says it contained a duplicate transaction. Are my coins lost forever or can i load it some other way?

Question pretty much says my dilemma. Wallet won't load due to a "duplicate transaction" which I thought could not happen. I use multibit btw, if that helps. Please tell me I can load my wallet ...
7
votes
2answers
1k views

How to enable website users to transact with each other using bitcoins?

I have a website which enables users to trade information for a price. The price is calculated based on an algorithm within the website. The website charges a percentage per transaction for the ...
5
votes
1answer
2k views

What to do about a “stuck” transaction?

I started the standard client with --rescan instead of -rescan after switching wallets and before synchronizing with the latest blockchain, and made an going transaction. This transaction got "stuck",...
3
votes
1answer
2k views

What's a good site to see bid/ask walls?

I'm currently using Mtgoxlive to view ask and bid walls. But ... I can't see the chart beyond about $1.5 +- the current price. Is there another site for viewing ask/bid walls graphically, in a ...
5
votes
1answer
3k views

Can I regenerate blkindex.dat from blk0001.dat?

My copy of blkindex.dat became corrupted, but I still have the whole blk0001.dat file. Is it possible to reconstruct the blkindex.dat file from the blk0001.dat file or do I have to delete both files ...
-1
votes
1answer
570 views

Does Bitcoin work better for one user if they always use the same IP?

I use a VPN and regularly change my IP. As it is, I've been running Bitcoin on and off (mostly "on") for over a year now and have yet to generate anything (well, except lots of heat). So I got to ...
10
votes
3answers
6k views

Why does blockchain.info report “Estimated Confirmation time” not as 10 minutes?

Currently, it is a timer which counts down from 10 minutes starting when the transaction is first seen. When the timer reaches 0 minutes, it switches to "Unknown / Never." It is my understanding ...
7
votes
2answers
3k views

How can I verify a signed message?

I can send a signed message using the standard client, but if I see a signed message in, say, a forum, how can I verify it? I understand this hasn't yet been implemented in the GUI for the standard ...
9
votes
1answer
567 views

Importprivkey's “label” - is it the same as an account?

The "importprivkey" API call allows one to import a private key and save it with a label. Is the "label" in the API call synonymous with an account used in the wallet?
5
votes
3answers
3k views

Getting orphaned Blocks from the Blockchain

I'm very interested in doing some analysis of orphaned blocks, but to do so I'd have to have a good way of accessing them. Blockchain.info seems like a good place to start but I don't want to abuse ...
7
votes
3answers
2k views

Pseudocode to verify a signed message

Can someone explain or point to some documents with pseudo code that would show me how to verify bitcoin address based on a signature and message. I know how to do this in clients I want to know how ...
3
votes
1answer
15k views

How to run a litecoin miner behind a proxy server?

I've downloaded the Windows 64-bit Litecoin mining software as provided from http://pool-x.eu/gettingstarted I'm trying to run the miner from behind a firewall. My browser uses an HTTP proxy to get ...
2
votes
3answers
317 views

Custom validation logic for transactions/ custom script extensions

Is it possible to add a hook for custom validation of transactions with a special script "tag" in them? If so, How? In essence, I want to add something similar in functionality to bitcoin script, but ...
2
votes
1answer
639 views

Downloading of blockchain failed

I’ve been attempting to set up my own wallet, but am having difficulties. Last week I began installing the standard Bitcoin client. When I first attempted I got to the process of downloading the ...
4
votes
3answers
4k views

How big is the blockchain on disk as of 5th July 2012? [closed]

I just started Bitcoin-qt for the first time, and it is syncing. How much space does the blockchain take up? I have my drive heavily partitioned, and my /home partition (linux mint) is only about 20GB....
14
votes
3answers
4k views

Which Two-factor authentication methods are available at which exchanges?

I see that Mt. Gox now supports the Google Authenticator app (on Android, iOS - iPhone, iPad, iPod Touch, and on Blackberry) for 2-factor authentication (in addition to support for Yubikey, of course)....
4
votes
4answers
22k views

Why can't I spend my bitcoins when they have been fully confirmed?

I've used bitcoins for quite a while, but about a year ago I decided to dump having a thin client on my machine, and I've just kept my coins in various exchanges. Yesterday, however, I wanted to ...
4
votes
2answers
3k views

Is there an Android app that will scan a QR code and show the balance?

What I'm looking for is an app that lets a person scan a QR code containing a Bitcoin address and then see the balance and transaction history for that address. For a specific use case, a mobile ...
14
votes
5answers
26k views

Is there a usable Namecoin e-wallet?

Specifically, I need the easiest possible way to store Namecoins mined through merged mining, so the eWallet will have to deal well with generated transactions. Do any NMC eWallets actually exist? Do ...
4
votes
2answers
1k views

Format of comment parameters on bitcoind sendfrom command unclear. Attempts result in 'error: type mismatch'

The way to specify comment and comment-to parameters when calling bitcoind sendfrom at the comment line is not clear. When using sendtoaddress, this format works: bitcoind sendtoaddress '...
10
votes
2answers
6k views

Is the value of “satoshi” fixed or dynamic?

BitCoin Wiki (Transactions) states: ...1 BTC = 100,000,000 Satoshi... Yet BitCoin Wiki (FAQ) states: ..."satoshi"... is smallest denomination currently possible In the future when the protocol ...
15
votes
1answer
7k views

How does bitcoind generate a new address if the wallet is encrypted

Suppose that my wallet is encrypted with a passphase and currently I have not provided bitcoind with the passphrase to access the private keys section of the wallet. If I enter: bitcoind ...
4
votes
3answers
1k views

Which VPS providers are the most popular or notable for hosting bitcoind instances? [closed]

A lot of people wanting to create their own service communicating with a bitcoind instance use virtual servers for hosting due to the low associated costs. Which service providers are the most popular ...
6
votes
1answer
928 views

Is the new Google Compute Engine suitable (and affordable) for running a bitcoind instance?

Google just recently (at Google I/O 2012) announced their new cloud product, the Google Compute Engine. I don't really understand what it is exactly but I heard it's basically some sort of VPS service....
4
votes
1answer
769 views

Will calling “walletpassphrase” twice in a short amount of time increase the time the wallet stays unlocked?

The Bitcoin API call for walletpassphrase allows one to open the wallet for a set amount of time. If one calls it again while the wallet is still unlocked, we get an error of 'Error: Wallet is already ...
11
votes
2answers
2k views

What's the longest chain of orphan blocks? (How many confirmations have been necessary?)

I believe my two title questions are the same (are they?): Heretofore, what is the longest chain of orphan blocks (of N blocks), such that if someone didn't wait for N+1 confirmations, they may have ...
2
votes
2answers
1k views

New User, New Wallet

I recently purchased some bitcoins, which were sent via coinapult to my cell phone. I received a text for the amount with a link to an online wallet (apparently not a true wallet but just an account ...
8
votes
3answers
307 views

What is the preferred way to denote orders of magnitude in BTC?

If I have 36,235.97 BTC, would I shorten that by writing that I have 36.2k BTC or would I write 36.2 kBTC? It seems that latter is proper for SI units, while the former is used more often for money, ...
6
votes
3answers
371 views

Bitcoin-related bounties

What is the most common way for one to announce new Bitcoin-related bounties in the community? Is there some website that mediates in the process, or is everything done through the Bitcoin forum?
7
votes
2answers
920 views

Can different clients have different transaction fees?

BitCoin Wiki states: Different bitcoin clients and different versions have different rules for determining which transactions to accept and how large a fee to send.. Is it true that different ...
5
votes
3answers
1k views

Demographics on Bitcoin users?

Speaking with a large group about Bitcoins lately, I noticed that most people there came to like Bitcoins for different reasons. The shady ppl wanted drugs, the accountants wanted to avoid taxes, the ...
7
votes
3answers
2k views

What is TimeKoin?

I just found this (on BitcoinTalk). TimeKoin seems to be an attempt at a cryptocurrency. There is a whitepaper and an about page, and I've skimmed through them, but I haven't been able to answer these ...
5
votes
1answer
1k views

Why is bitcoind so slow on VPSs?

Sometimes it takes bitcoind more than a minute to respond to basic RPC calls such as getbalance (and on average, it takes at least 5 seconds), even though the "STAT" according to the Linux 'ps' ...
27
votes
5answers
31k views

Is Butterfly Labs reputable / Should I preorder the SC Jalepeno? [closed]

I'm somewhat new to the mining scene but I'm a bit familiar with everything. I see that GPU mining will become much less cost effective over the next year or so, especially around December when the ...
4
votes
2answers
235 views

What might cause the Bitcoin client to take a long time to see a new, unconfirmed transaction?

I've noticed that sometimes, when I send Bitcoins from one client to another, the recipient client might not see the transaction, sometimes until it already has one or more confirmations. Both clients ...
-2
votes
2answers
32k views

What's the current $/Mhash [closed]

Just curious. My plan is to buy 5 of these So I should use this card right? http://www.amd.com/us/products/notebook/graphics/ati-mobility-hd-5800/Pages/hd-5830-specs.aspx Install them all in one ...
2
votes
1answer
216 views

Are there proposed hardfork changes that couldn't be made if the market was filled with ASIC miners?

Suppose a year from now most of the hashrate is being produced by ASICs. Bitcoin is not feature-complete yet. Out of the changes in the hardfork wishlist, would any of these changes be hard/...
2
votes
1answer
2k views

How many FPGA can be attached to one computer?

I am looking at this. Dual FPGA X6500 Mining Card Rev 3 (Without Heatsinks) So we connect the card via USB and the card will mine? Should I buy one FPGA or several ones? Where do I attach the FPGA? ...
4
votes
2answers
6k views

Is FPGA more cost effective than GPU?

Actually is there a list of hardware we could use and their bitcoins/hardware price ratio so I can compute return of investment?
5
votes
4answers
2k views

Is the “double geometric” payout method for pooled mining fair to part time miners?

The "double geometric" payout method as used on the Ozco.in pool is supposed to be fair and prevent pool hopping, but is this method fair to miners that only mine for a few hours per day, as opposed ...

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