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4
votes
1answer
482 views

Web API to retrieve difficulty changes

I am looking for a website that allows me to retrieve the time at which each difficulty change happened. The time doesn't need to be accurate so a time stamp from the block will do. I want to fetch ...
8
votes
3answers
933 views

If there is no one company behind bitcoin, who controls it? [duplicate]

"If there is no one company behind bitcoin, who controls it?" This is the question that many people new to bitcoin ask. What is the best way to convey to them how bitcoin works, and in a way that can ...
7
votes
3answers
200 views

Using Bitcoin for Travel Purchases

BitCoin is (arguably) the world's best chance thus far at a virtual currency (although it's very unstable). Even though it's a high risk, it is able to be converted to regular dollars, and some shops ...
3
votes
1answer
407 views

FirstBits address shortening algorithm

Is the algorithm used by FirstBits to create their shortened addresses described anywhere, so that anyone wanting to automatically generate them could generate the same result as asking the website ...
11
votes
5answers
1k views

Where can I find a list of merchants who accept bitcoins?

Is there a list of merchants who accept bitcoins?
7
votes
1answer
3k views

How fast can one generate Bitcoin addresses?

Seeing as the topic of generating address conflicts comes up every now and then, I am wondering if someone looked into the problem a bit further. Has anyone measured the speed at which Bitcoin ...
3
votes
1answer
543 views

How do we have one-to-one mapping given the key size differences?

If public keys are 34 characters long, and private keys are 61 characters long, then the combinations of 34 characters is not sufficient to give each combination of 61 characters a unique pair. My ...
11
votes
2answers
1k views

Does block validation get more difficult as the blockchain grows?

I just downloaded Bitcoin 0.5 and started downloading the blockchain from scratch. The process was rather fast early on but slowed down noticeably later. That could of course be related to network ...
6
votes
3answers
5k views

Is it impossible to GPU mine without OpenCL?

I have an Nvidia 7300 GX and want to start mining with it. This card doesn't support OpenCL. Can I still use it for mining? With BitMinter I can only use CPU mining; it doesn't see the Nvidia card. I ...
4
votes
3answers
237 views

Is there something like Mt.Gox Live but for Intersango?

Is there something like Mt.Gox Live but for Intersango? I don't expect the same quality, but at least to be better than this horrible bugged mess which is BitcoinCharts/BitcoinWatch.
2
votes
1answer
126 views

Block Explorer, which fields are reversed, and which are the same as in a raw block dump?

Recently I'm trying to properly recreate the genesis block in my low-level application. To do this, I use the Block Explorer to get the proper values for different fields, but at times it can be very ...
9
votes
2answers
7k views

How long does it take to receive bitcoins?

I bought 1.25 BTC but after 2 days I see nothing. What is wrong? This is the transaction. Also, I went to freebitcoins.appspot.com, since they claim thay they give for free 0.005 bitcoins per visitor....
18
votes
4answers
5k views

Why does the Bitcoin protocol use the little-endian notation?

Why does the Bitcoin use the litte-endian notation? It is less common than big-endian notation, thus when programming low-level applications working with Bitcoin protocol, one quite often has to ...
5
votes
1answer
2k views

How to update Bitcoin client?

Today I downloaded and installed the new version of Bitcoin (0.5.0) I extracted the file and it created a folder. I followed the instructions and clicked bitcoin-qt.exe and the program started. No ...
3
votes
0answers
2k views

Why MtGox does not accept a bank statement as proof of address for verification? [closed]

To increase the transaction limits on a MtGox account you need to submit a personal ID (passport or drivers license) and a utility bill (electricity/water/gas/phone) as a proof of address. It is ...
7
votes
1answer
202 views

Is the time a transaction was done recorded in the block chain?

Is there something like a timestamp of each transaction recorded in the block chain, or only the mere fact that the transaction was done?
4
votes
3answers
456 views

Running two bitcoind instances for different nets

Is it possible to run two separate bitcoind instances on one system at the same time, one for mainnet, other for testnet?
8
votes
3answers
1k views

“Market capitalization” over time

Is there a convenient data source and/or graph that gives the "market capitalization" over time for Bitcoin (i.e. the number of bitcoins issued to date times their current value on the big exchanges). ...
9
votes
1answer
3k views

Should I use a different address for every transaction?

Should I use a different address for every transaction? If yes, why? For safety? What happens I use the same address to get bitcoins from 2 different people, what happens?
5
votes
5answers
812 views

Is a distributed version of GLBSE possible? How would you design it?

GLBSE is a privately owned bitcoin-based stock exchange website. Recently there has been talk about creating a distributed, open source version of it, without any single point of failure, possibly ...
5
votes
2answers
279 views

Issue with bitcoin client 0.4.0 - stop populating

My bitcoin client stops populating at 8 connections and 112949 blocks, event I left it running for over 12 hours now. I checked my internet connection and firewall, all seem OK. Restart it a few times ...
4
votes
3answers
1k views

Limit size of data files

As the mere size of the constantly changing data file tampers with my backup concept, I would like to ask if there is a way to split this file into many smaller pieces. I have no problem with the size ...
39
votes
3answers
10k views

How does the bitcoin client make the initial connection to the bitcoin network?

Once the bitcoin client is connected to a machine (or multiple machines) on the bitcoin network, they can share information (e.g. the block-chain, IP addresses of other nodes, etc). I understand how ...
6
votes
1answer
627 views

Is there a Bitcoin exchange which has bank accounts in South Korea?

Is there any exchange, or a website selling Bitcoin, which has a bank account in South Korea?
30
votes
2answers
8k views

What is TxIn's sequence?

I'm currently trying to generate the genesis block with my code and I've stumbled upon the TxIn sequence field that is not explained in the Protocol Specification wiki page, nor does it seem to appear ...
22
votes
3answers
3k views

What happens if there are no transactions in a block?

What happens if there are no transactions in a block? Suppose there is a 10 minute time frame in the middle of the night, maybe on a holiday, and there are no transactions made. Do the miners get ...
12
votes
1answer
3k views

Why do namecoins have any value?

Many Bitcoin mining pools offer merged mining with Namecoin, and there are places where one can buy and sell BTC for NMC and the other way around. But, why would anyone want to own NMC? As far as I ...
2
votes
2answers
4k views

Finding “lost” bitcoins

Bitcoins sent from Mt. Gox, but never have appeared in my account. I have the block # of the transfer. How can I trace the deposit or find them within my account?
17
votes
2answers
12k views

Why does the length of a bitcoin key vary?

Why does the length of a bitcoin key vary? Why aren't they all the same length?
1
vote
2answers
170 views

Bitcoin client incentives to share peers and blockchain

Question a bit related to Microsoft's research on incentives of sharing transactions. What is the incentive for a custom-tailored Bitcoin client to share information regarding known clients and the ...
1
vote
1answer
439 views

boost::thread_resource_error

I am getting this error in the debug.log of bitcoind: EXCEPTION: N5boost16exception_detail10clone_implINS0_19error_info_injectorINS_21thread_resource_errorEEEEE boost::thread_resource_error It ...
10
votes
3answers
783 views

Flaw in Bitcoin protocol regarding incentives to share transactions

Once the 50BTC per block rewards have halved many times and the transaction fees start to become the primary reward for miners, it sound like there is incentive for miners to not pass on transactions ...
3
votes
2answers
217 views

What would be the process for identifying a person that performed a transaction from a wallet on a personal device?

I presume the legal process would be something along the lines of Get IP address from blockchain. Get ISP to tell you whose that is or was at the time. So I expect that this would normally require ...
7
votes
1answer
3k views

Running Bitcoin on command-line-only system

I want to run a Bitcoin client on a command-line-only system (Amazon EC2). Is there some specific command-line parameters I should use in order to run the main client without the GUI, or will it run ...
9
votes
2answers
4k views

If I lost my public keys, could I recover them from the private key? [duplicate]

Possible Duplicate: How are public & private keys in an address created? If I lost my public key, but still have the private key, is it possible to recreate the public keys. How many public ...
10
votes
2answers
13k views

How to choose the most profitable pool?

Say I have a moderate amount of hashing power and I want to maximize my profit by using the pool that would give the best rewards for mining with them, what should I look at when choosing a pool?
24
votes
2answers
6k views

What is the block maturation time?

I was reading the wiki article about the blockchain and I didn't understand the part in bold: When a block becomes an orphan block, all of its valid transactions are re-added to the pool of ...
5
votes
3answers
3k views

Does my client accept inbound connections?

How can I verify that the Bitcoin client is well connected to the network and is able to receive incoming connections?
4
votes
1answer
218 views

Contracts: Will this be possible?

I would like to know if this will be possible with Bitcoin: Create a key with the following features: Only be able to spend btc if a % of pre-definied keys allow it The own of the key need for ...
8
votes
1answer
1k views

Where can I see the average transaction fee payed in the last 100 blocks?

Is there a site that shows what's the average transaction fee payed in the last X blocks? Or just raw data about this? I checked BlockExplorer and Sytes and they don't seem to show this information.
8
votes
4answers
565 views

Would any of the current botnets be able to launch and sustain a 51% attack?

The "owners" of botnets probably runs them as businesses, meaning that they will always seek profit-optimization. Do you believe that it is a matter of time before they will seek to launch and sustain ...
7
votes
6answers
6k views

A list of trusted Bitcoin websites?

Is there some trusted website that maintains a list of Bitcoin-related websites and their reputation? For example, if I wanted to check if betsofbitco.in is a legitimate websites (it pays rewards ...
10
votes
3answers
1k views

Why does the mainline client limit the number of outbound connections to 8?

The mainline Bitcoin client limits number of outbound connections to 8 however allows up to 125 total connections. To achieve greater than 8 connections (due to outbound limitation) requires either ...
9
votes
1answer
798 views

How do I implement an escrow service using Bitcoin contracts?

I can see that Bitocin can provide escrow contracts. https://en.bitcoin.it/wiki/Contracts#Example_2:_Escrow_and_dispute_mediation Can someone provide a worked example or even better a pointer to a ...
10
votes
3answers
2k views

Is there a bitcoin exchange accepting SEPA transfers? [closed]

Since mt.gox had to close its european office, is there any other exchange accepting SEPA transfers? Sending a wire to the HK office costs much more than a SEPA transfer to me, and I'd like to avoid ...
12
votes
4answers
1k views

What are the most respectable Bitcoin news websites?

Which blogs or websites are the most respected in the community to bring everyone up-to-date with the Bitcoin-related news? I'm not talking about the forums, as the sheer volume of messages are ...
5
votes
2answers
5k views

What does the `gen` option in bitcoin.conf do?

The gen option isnt copiously described in the sample bitcoin.conf file ... does that mean that the daemon started up will attempt to mine for coins?
6
votes
3answers
373 views

What are the qualities of a country that might make it more or less likely to freely allow Bitcoins or crypto-currencies?

As some examples which seem logical to me, but should only be taken as examples: A government that is susceptible to commercial lobbying is probably more likely to be pressured by banks to disallow ...
11
votes
3answers
688 views

Is there a list of countries that are not likely to persecute bitcoin businesses?

It seems that at some point countries will start cracking down on Bitcoins. And Bitcoin is designed to handle that. However, are there some countries that are openly friendly to bitcoin businesses ...
14
votes
2answers
2k views

Why so many bitcoin exchanges have their bank accounts closed and have problems establishing bank accounts?

I find it really strange that it happens that so many Bitcoin exchanges have their bank accounts closed. Outside of the Bitcoin world, I find it very unusual to have a bank account closed, for a ...

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