All Questions
31,061
questions
5
votes
4
answers
2k
views
Is vanitygen a problem for bitcoin?
Considering the amount of users of vanitygen, and the fact that each user is generating millions/billions of bitcoin addresses, won't we run out of bitcoin addresses soon? What would happen if we did ...
0
votes
1
answer
672
views
cpuminer - what command line tools are required?
I'm trying to run cpuminer on my Mac, though cpuminer requires a lot of command line tools - such as curl, libidn, etc. What are all of the tools required, and what is the minimum version of each I ...
2
votes
2
answers
108
views
Integrity of ensuring the correct recipient of a BTC public address?
If a hacker gains access to a website and proceeds to vandalize the website, including changing the public-key of a BTC wallet, this would direct all payments to the hacker. Is this a security risk ...
1
vote
1
answer
122
views
Stuck on blockchain 8791 - Synchronizing [duplicate]
I don't know what's wrong with it, but I would really appreciate it if someone can help me. I've already been receiving money from this address so I really don't want to delete it. I have 3 BTC coming ...
6
votes
3
answers
3k
views
I traded XRP for BTC. How do I withdraw my bitcoins from ripple.com?
I traded XRP for BTC. How do I withdraw my bitcoins from ripple.com? I guess I need to withdraw to bitstamp.net somehow?
66
votes
6
answers
37k
views
What is meant by Bitcoin dust?
I've seen the term "dust" used to describe small transactions that might be considered as spam by the Bitcoin network. Is there is a generally accepted definition of this term?
7
votes
1
answer
594
views
Does using deterministic wallets reduce our anonymity?
Is it possible to figure out that certain addresses belong to the same wallet? Say I have 2 or 3 addresses that I know were created by a deterministic wallet like Armory. Is there a way to find all ...
3
votes
1
answer
895
views
Can I use the official wallet to recover bitcoins sent to an alternative wallet?
I like alternative wallets like Armory and Electrum because they offer more features, some of which are fundamental for security and convenience. But I'm a bit worried about them not being "compatible"...
52
votes
4
answers
202k
views
Import wallet.dat into a new Bitcoin-Qt client
I had Bitcoin-Qt on my computer with several bitcoins in my wallet, using Vista. Then my computer crashed. Finally I was able to get my computer fixed and download a new version of Bitcoin-Qt. Now I ...
5
votes
2
answers
471
views
Will ripple automagically use the ordebook when finding a path?
I have a question regarding this scenario.
A (test-gateway)
28000 XRP in balance
B (user1)
trust line with A for 1000 USD
400 XRP in balance
C (user2)
trust line with bitstamp for 100 BTC
400 ...
1
vote
1
answer
1k
views
Bitcoins didn't arrive to new wallet
I use Bitcoin-Qt. Decided to make another wallet and transfer some bitcoins there. Wanted to give that wallet to my friend as a gift. What I did was:
renamed wallet.dat file to 1_wallet.dat
started ...
8
votes
5
answers
693
views
When does OpenCoin Inc intend to make the Ripple server code public?
Is there a definite timeline or not? Thank you.
3
votes
0
answers
561
views
Blockchain.info Shared Send
Can anyone comment on the trustworthiness of blockchain.info's mixing service (shared send). Also would it be possible for things to go wrong internally resulting in my loss?
3
votes
2
answers
743
views
BTC-e API process
I'm submitting a Sell trade via the API, and the orderid returned is 0. It appears the trade is successful, and the adjusted funds are returned by the response. So it looks like the trade is happening ...
3
votes
1
answer
628
views
Bitcoin wrong address [duplicate]
What will happen if someone does not copy and paste the "To" address properly?
For example:
If my address is 1xxxxxxxxxxxxxxxA
and the person tries to send money to 1xxxxxxxxxxxxxxx
(note the ...
4
votes
2
answers
4k
views
How do I switch from Bitcoin-QT to a lighter, faster (SPV) Bitcoin client?
So, keeping up to date with the blockchain is getting ridiculous in Bitcoin-QT, especially on my laptop. If I leave it off or away from the internet for even a short period of time, it takes forever ...
0
votes
3
answers
249
views
How do I exchange a cryptocurrency with another?
I have a bunch of litecoins and want to exchange them for bitcoins. What's the easiest way of doing it, without having to sell LTCs first and then buy BTCs?
6
votes
1
answer
4k
views
Can quantum computing improve Bitcoin mining?
Would a D-Wave 2 with 512 qbits be faster than the fastest ASIC when mining bitcoins?
11
votes
1
answer
1k
views
Is it a 51% attack or a >50% attack?
Is it 51% attack or 50.0000...1% attack?
Bitcoin is getting to a point where 1% is a lot of hashing power...
My understanding is >50% due to the nature of the protocol.
2
votes
1
answer
544
views
What pool catters to multiple alternate currency? [closed]
I want to mine alternate coins. I am looking for pools that support many of the coins here so I do not have to keep changing pools.
5
votes
3
answers
36k
views
CPU Mining: Optimal Number of Threads
(I guess this question in principle applies likewise to Bitcoin, but given how un-profitable CPU mining of Bitcoin seems to be, this question actually arose with regards to Yacoin mining).
I am ...
14
votes
3
answers
5k
views
Why can't Dwolla send to Mt Gox?
I received the following after trying to make a USD deposit to Mt. Gox from Dwolla today. Does anyone know more information about this or if the court order may apply to other methods of deposit/...
1
vote
1
answer
448
views
How do you know how much a product costs in Bitcoins?
When paying with Bitcoins how does that affect the price of the service or item? For example If I buy something that costs 20 CAD using Bitcoins and the exchange rate is 1 CAD = 0.01 BTC does that ...
9
votes
3
answers
2k
views
Why do pools get so often DDoS attacked?
In other words: who has incentives for attacking pools?
Do you think it's the government?
4
votes
1
answer
266
views
Why is the Bitcoin Wiki protected against editing?
I recently found an error on the Bitcoin Wiki, when I noticed that I could not edit it.
I made an account a long time ago, so I logged into it, but still I am not able to edit pages.
Why is this? A ...
3
votes
1
answer
375
views
Do all private keys that are resolved to the same address give access to the bitcoins on this address?
The algorithm to get the public key and the address from a private key consists of a few steps.
Which of the intermediate keys is used to sign transactions with?
Ultimately, there can exist two ...
5
votes
3
answers
279
views
What were IP transactions supposed to be useful for?
Besides sending BitCoins using wallet addresses, there used to be another way, through IP transactions as described in the wiki.
The disadvantages were obvious (man-in-middle attacks etc).
However, ...
4
votes
1
answer
2k
views
Are there many Namecoin domains in use?
I know that the idea of namecoin is to create distributed DNS system.
I also know that one can by bit address with namecoin.
But I have never seen any bit domains. If they do exist, how reliable are ...
4
votes
2
answers
2k
views
What are the effects of leaving Bitcoin-QT open?
I'm using bitcoin-qt at the moment, and at the bottom of the download page it says:
"Do you have a computer that you keep switched on all the time, that's connected to the Internet? You can help the ...
3
votes
3
answers
21k
views
How are parts of Bitcoins traded? [duplicate]
I understand how whole Bitcoins are traded (each coin has its own identifier, this identifier is associated with a wallet), though I do not understand how it is possible to trade parts of a Bitcoin (e....
7
votes
2
answers
3k
views
Calculating address balance
Is there some method how you can calculate the balance of an address without resorting to web-based API's? When I import a private key the rescanning of bitcoind takes hours. I know to get a balance ...
1
vote
3
answers
407
views
How to keep my shares when moving a pool server?
I have a question...
If I'm mining with a litecoind/bitcoind process, and a pushpool. How can i move the whole shablam to a new server/copmputer WHILEST saving the progress I have on this current ...
1
vote
3
answers
3k
views
What are the relevant hardware-mining options as of 13 May, and and how should one choose one over another?
After reading on the topic of bitcoin for the past few hours I've heard a few terms again and again: mining with the CPU (pointless as of today), GPU mining (lots of people doing this), and then ASIC, ...
4
votes
1
answer
1k
views
Understanding trading history
On BTC-E, you can see the recent trade history for the different currency pairs. For example right now you see these recent trades:
14.05.13 01:27 Sell 112.75 USD 4.77859 BTC 538.7860225 USD
...
1
vote
1
answer
303
views
is bitcoind reliable when depending on it for web services?
What I mean by the title is, say If I create a service with bitcoind being used to create and store large numbers of accounts and address, is it likely to take the strain? Can I setup multiple ...
0
votes
1
answer
74
views
Setting up: sending and email
I've been using Bitcoin Wallet on windows 7 to receive payments successfully but after making my 1st BTC payment the transaction doesn't appear to be clearing (957 confirmations and counting).
The ...
0
votes
5
answers
6k
views
How to get current BTC rate for BRL(real) using php cURL or javascript
Is there anyway to get current rate of BRL = BTC.
I saw the blockchiain ticker. But the value for BRL currency is not updated
As listed here in preev.
I want to get the
current 1BTC= how much BRL
...
2
votes
3
answers
2k
views
Reserved Bitcoin address for examples?
Is there a reserved Bitcoin address?
It should not be able to send bitcoins to it. But the address should be syntactically valid.
Such an address could be used for examples/documentation, without ...
3
votes
3
answers
4k
views
Support sending bitcoins using webpage URL? [duplicate]
Are there any Bitcoin clients or services that support sending bitcoins to a HTTP(S) URL instead of having to enter a Bitcoin address directly? (e.g. for donations)
Webmasters could include their ...
1
vote
2
answers
3k
views
Is MultiBit secure? And hong long will MultiBit import .aes.json take?
Two questions:
Is MultiBit secure?
I opened a wallet in blockchain.info, and I want to import .aes.json to MultiBit, hong long will MultiBit import .aes.json take? I waited too long.
19
votes
9
answers
14k
views
How to check Bitcoind block chain download progress level
I have installed bitcoind on ubuntu server, and when I run screen -x for btc it says error -10 blockchain is downloading.
How do I know the progress level? currently 125600 blocks are downloaded, but ...
3
votes
1
answer
208
views
Compromised Bitcoin clients?
Are there any known cases of compromised Bitcoin clients (whether proprietary or free)?
I don’t mean separate malware that attacks installed clients, but malware that is included in the client itself....
2
votes
2
answers
485
views
Does slippage occur on MtGox when 'Market Order' is unchecked?
If you were to uncheck the 'Market Order' box and buy 10 at 110USD, the order can be partially filled by 1 at 110USD and there are 9 more for sale at 113USD, the matching system would partially fill ...
10
votes
2
answers
5k
views
How many Bitcoin addresses are there?
I was wondering where I could see how many unique addresses currently exist in the blockchain, and especially how many of those have a positive balance. Is that data available somewhere?
0
votes
1
answer
3k
views
Solving a block and verification of transactions [duplicate]
My understanding of mining is that the reason an award of Bitcoin comes along with the solving of the current block is to give people incentive to actually try to solve the block. My understanding is ...
2
votes
1
answer
1k
views
Is there any reasonable way to short-sell Bitcoin [duplicate]
It is not an official currency (yet?) but definitely has a market, and as such, I might be intrested in short-selling some. Are there any reliable, way to bet against it?
1
vote
0
answers
147
views
Bitcointools for v0.8+?
I was looking to poke around about with some of the functions of https://github.com/gavinandresen/bitcointools but it claims to only work for earlier versions of bitcoin. Am i just out of luck? or is ...
1
vote
1
answer
382
views
bitcoin from ebay
I bought a bitcoin on eBay, but my bitcoin wallet is taking FOREVER to sync. How can I see if I own a bitcoin? Do I have to wait probably weeks for the wallet to sync?
3
votes
2
answers
1k
views
Can Ripple XRP be a good store of value with >50% ownership known?
The fact that the vast majority of XRP ownership is known represents from my point of view the main threat to the value of the currency and the project itself.
Do Ripple founders and OpenCoin have ...
1
vote
2
answers
2k
views
Multibit balance does not match blockchain balance. Weird extra bitcoins appear. Now the are gone plus some?
So, really weird. Went to send some bitcoins to another of my wallets and all went as expected. I sent 1.013 BTC from a balance of about 3.01254367 BTC. My girlfriend then went to make a withdrawal. ...