All Questions

Filter by
Sorted by
Tagged with
5
votes
1answer
800 views

BAMT Email Alerts Setup

I have BAMT running on my rig but I don't think the email alerts are working, possibly due to a bad config. I would like to use Google's SMTP server if possible (or any other free SMTP provider) but ...
6
votes
1answer
408 views

Read wallet.dat error?

I use BitcoinSharp with C#.net. I try to reading my wallet.dat (dont encrpyt). And some error : "The input stream is not a valid binary format. The starting contents (in bytes) are: 00-00-00-00-01-00-...
2
votes
1answer
278 views

Is bitcoin subjected to DOS attack? [duplicate]

Possible Duplicate: What protection does Bitcoin have against Denial of Service (DoS) attacks? Assume I am a malicious user, and my goal is to make bitcoin unusable. I can simply make millions or ...
11
votes
3answers
6k views

Bitcoin client won't connect to the network

I installed Bitcoin QT yesterday and it was very slow to connect to the network. It didn't actually get there for over an hour. Today I opened it again and it won't connect to the network at all. Any ...
7
votes
2answers
585 views

Which is better back-end mining pool?

So far I've seen Pushpool, PoolServerJ and P2Pool. Which one of this would be easiest to set-up, maintain, effectiveness, and overall security?
3
votes
1answer
245 views

Which operating system would work best with pushpool?

Which operating system would be best for pushpool?
4
votes
1answer
103 views

Are there any mining pools that allow a specified amount of bitcoins to be sent to a chosen address?

This would be like using a pool as a wallet service, as you could send a subset of your balance to a retailer to purchase something and avoid running the Bitcoin client app. Most pools only pay out ...
6
votes
1answer
215 views

Is there still a shortage of available inbound connection slots?

David Schwartz's answer to this question states the following: "For some reason that isn't well-understood, the Bitcoin peer-to-peer network is consistently short of available inbound connection ...
10
votes
4answers
1k views

Do we know enough about Casascius to trust their physical coins in the long run?

Casascuius offers an attractive product, a physical coin storing a private key. From a CNET article and the website itself, we learn the company is run by Mike Caldwell, 2901 Little Cottonwood Road,...
5
votes
3answers
121 views

Is there some kind of draft to support a chain split+merge, like Version Control systems do?

Currently, if I didn't misunderstand, in case of a network split when the two networks merged again only one of them would be "valid" and everything else would be discarded. This seems overly ...
1
vote
2answers
721 views

What is the formula to calculate the length of a merkle tree?

What is the formula to calculate the length of a merkle tree, given the length of the leaf vector?
5
votes
1answer
221 views

No Account number or Address in listtransactions for generated blocks

I am in the need (for my app development) of having more information printed with the "listtransactions" of the bitcoind daemon. For blocks generated it shows the account as "" and no bitcoin address ...
13
votes
4answers
2k views

Why do some transactions take minutes and others take hours?

I sent some bitcoins to an address and then looked on blockexplorer and it was there in about 10 minutes, which is what one should expect. I did another send to a previously unused address and it ...
3
votes
1answer
366 views

tradehill.com alternative?

I am constructing a small online store where I would like to accept BitCoins as payment. I have not had any luck running the Deamon on my server, so I was planning to use tradehill.com and then make ...
4
votes
1answer
973 views

How do I know when my mining GPU has been worn out?

How do I know for sure when my mining hardware (GPU in particular) has failed? How can I be certain that my card is at fault and not my software or overclock settings? Example: On my rig one of my ...
10
votes
2answers
2k views

Does Bitcoin rely on the internet?

Is it possible to run Bitcoin mining and transaction distribution without using the internet? For example, how would Bitcoin continue in the event of a total clampdown by a telco?
9
votes
1answer
1k views

Does the main Bitcoin client blacklist addresses?

Does the main Bitcoin client blacklist any addresses that send too many erroneous messages? If so, how can one whitelist a particular address? I am developing an app that will be communicating with ...
5
votes
1answer
666 views

Which mining software/script provides the greatest MHash/sec and power efficiency balance?

Hopefully this is not too specific.. Which mining software/script provides the greatest MHash/sec and power efficiency balance? (I'm currently using an old version of phoenix miner) Preferably for ...
8
votes
3answers
7k views

How to calculate a hash of a Tx?

How does one calculate the hash of a Tx? Which fields need to be double SHA hashed and in what order?
11
votes
3answers
15k views

CPU Mining with a large EC2 cluster - worth the effort? [duplicate]

I'm relatively new to Bitcoin, and am playing around with pool mining for fun. I have access to a fair amount of EC2 instances - c1.mediums - between 30 and 50 on a given day. I already have the '...
21
votes
4answers
1k views

How often forks occur?

How often do forks occur in the block chain? I'm interested in the small, one block forks that happen when two miners create a block at the similar time.
-1
votes
1answer
426 views

How does a signed public key look different from an unsigned one? [closed]

I read this: "Public-key cryptography uses key pairs, a public and a private one, that can be generated by a user at any time. As the name implies, the public key gets distributed, while the private ...
0
votes
0answers
152 views

How does namecoin compare and contrast to bitcoin? [duplicate]

Possible Duplicate: What are Namecoins? It seems to me, a bitcoin newbie, that namecoin is something entirely different but has some similarities. I would like to hear it from the bitcoin ...
46
votes
4answers
20k views

How can I accept Bitcoin donations on my blog or site?

If I sell things, there are many services that allow me to accept bitcoins as payment. But for those who simply want to accept bitcoins on their blog or other site ... as donations. A simple bitcoin ...
10
votes
4answers
4k views

Why does mining profitability tend towards zero?

Why does mining profitability tend towards zero? Is it different for short term miners than it is for long term miners? Example: if I mine now and sell them next year, they may be worth more as ...
7
votes
2answers
433 views

Bitcoin over HTTP?

Are there any implementations of a Bitcoin client that would run over HTTP, allowing one to communicate by, for example, sending raw message bytes as a POST? Edit: I'm not looking for ways to control ...
5
votes
1answer
221 views

Where are the receiving and sending address descriptions stored?

Are the sending and receiving address descriptions stored in the wallet file, or as some other file managed by the Bitcoin client app? If I move or copy my wallet to a new installation of the ...
3
votes
1answer
478 views

Does Bitcoin wallet encryption also protect my sending and receiving addresses?

Bitcoin wallet encryption makes sure (by encrypting the private keys with a passphrase) that someone who finds your computer or your Dropbox or your backup drive (including wallet.dat) cannot spend ...
2
votes
1answer
7k views

Best place to buy bitcoins? [duplicate]

Possible Duplicate: How do you obtain bitcoins? I live in Europe and, because of that, I would like to buy some bitcoins with my savings "just in case". I'm a student, so I'm talking about ...
9
votes
1answer
752 views

Does the BerkeleyDB-based wallet.dat implementation leak private key data?

I read this little nugget on the bitcoin client bug tracker: the bdb binary log files can also contain sensitive data such as private keys Is that true? Does this mean that even with an encrypted ...
6
votes
1answer
588 views

Why is Block Explorer so slow? [closed]

Why is the Block Explorer so slow? It used to work reasonably fast, and now it just spins and spins for 20 minutes? Is it doing some kind of timing out? This is a very important utility for the ...
11
votes
2answers
1k views

Is Bitcoin inherently dependent on electricity?

Obviously, the computing power necessary to create the blockchain requires access to fast hashing which requires electricity. Given that local power outages do occur, and this can cause a lack of ...
7
votes
1answer
358 views

How does one know they solved a block?

Having the difficulty (either in the "bits" form, big integer form, or human-readable format) and a given block hash, how does one know if they solved that block? What is the formula or algorithm for ...
5
votes
1answer
866 views

Version field in transactions, blocks, etc

A field labelled "version" appears in many contexts regarding the Bitcoin protocol. Sometimes one uses the current version of the Bitcoin client (version message), sometimes 1 is used (block, tx), why ...
13
votes
2answers
9k views

I didn't receive a Bitcoin Payment. What does it mean when the Client is synchronizing?

Bitcoin newbie here. I recently installed the Bitcoin client, and purchased some bitcoins from Mt.Gox. My problem is that my client is constantly synchronizing. I've checked charts and seen that my ...
3
votes
3answers
760 views

What is needed for Bitcoin to become the reserve currency of the world?

Bitcoin's characteristics seem to make it a prime candidate as a reserve currency, given it has fast transactions to anywhere in the world at a low cost with little to no price manipulation or export/...
17
votes
9answers
1k views

Is there any way the Bitcoin network could resist a viral tainted-coin tagging system implemented by regulators?

Already it's possible for MtGox etc. to detect spends of coins that have certain well-known thefts in their history. If regulators forced audits on exchanges and key popular merchants, as well as ...
14
votes
9answers
1k views

Why is Bitcoin fair?

According to the Wikipedia article on Bitcoin: The initial bitcoin distribution is advantageous towards early-adopters. [...] However, the amount of work that must be done for one bitcoin is ...
3
votes
2answers
807 views

What is required to generate a block? [duplicate]

I've read a little about BitCoins and think the idea is very interesting. I was wondering what is required to generate a block? I assume there is some software you need. Do I also need an account ...
8
votes
2answers
375 views

Why is the Block Header txn_count field always zero?

According to the Protocol Specification, the txn_count field of a Block Header is always set to 0, why is that? What are the intended future uses of this field?
4
votes
1answer
469 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
929 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
199 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
403 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
537 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.

15 30 50 per page