5
votes
1answer
15 views
Why do transactions need to be spend fully?
If I want to send you 50 and I have 100, a transaction of 100 will be made, in which I get 50 back as change. Why is this?
See also Change
When the output of a transaction is used as the input of ...
0
votes
0answers
9 views
Do dollars reach MtGox through other channels than Dwolla?
There've been some questions here about MtGox getting dollars through Dwolla, but what about other channels besides Dwolla? Are dollars still reaching MtGox somehow? The price of BTC on MtGox a few ...
1
vote
0answers
14 views
Can I still transfer USD from MtGox to Dwolla?
Can I still transfer USD from MtGox to Dwolla, and then Dwolla to my bank account? I've done this several times in the past, before the DHS seizure of MtGox's Dwolla funds. It's hard to get an anwser ...
0
votes
1answer
22 views
People who don't broadcast their IP address?
At http://bitcoin.stackexchange.com/a/9807/5228 Tom van der Woerdt wrote "people who don't broadcast their IP address".
What did he mean by that? Is there a way to set up a particular Bitcoin client ...
2
votes
1answer
41 views
Watching and spending from a huge number of offline private keys
We plan to accept bitcoins on our eshop website. What we want plan on doing is:
1) Keep all private keys always offline (cold storage).
2) Generate at least 100,000 keypairs of which only one will ...
0
votes
1answer
17 views
Cgminer not working on windows with Nvidia graphics card
When I try to start cgminer on windows it throws the following error:
Command:
cgminer –-scrypt -o http://netcodepool.org:8337 -u usernmae -p mypass –-thread-concurrency 8192 -I 10 -g 1 -w 256
...
0
votes
1answer
12 views
Blockchain.info js verifier error
I got this error connecting to blockchain.info, does anyone know what that means?
0
votes
1answer
21 views
Unconfirmed transaction
I received a transaction which has been unconfirmed for 36 hours with 0 confirmations. I'm relatively new to btc and having had a relatively speedy, problem free experience so far I'm not sure what to ...
1
vote
1answer
13 views
Client that can run behind a firewall
Is there any client that can run behind a firewall? I tried bitcoin-qt and Electrum and neither could work because of blocked ports. I know I could use a web-hosted solution but I'd prefer a local ...
0
votes
2answers
27 views
Where is the config file of bitcoin-qt kept?
I keep getting this error:
EXCEPTION: N5boost16exception_detail10clone_implINS0_19error_info_injectorINS_15
program_options26invalid_config_file_syntaxEEEEE
the options configuration file contains an ...
0
votes
0answers
8 views
Does bitcoin.conf exapands environment variables?
I would like to keep passwords and such on environment variables, like:
rpcuser=$RPC_USER
rpcpassword=$RPC_PASSWORD
Is it possible?
1
vote
1answer
61 views
Did any customers lose money with the Mt Gox / Dwolla legal situation?
This crucial piece of info has been frustratingly absent from the news accounts I've seen. Specifically from what I understand, an account was "frozen". What does that mean for the people unlucky ...
0
votes
1answer
14 views
Access is denied litecoin cgminer
I am trying to run cgminer on windows 7. However every time I execute the command
cgminer --scrypt -o http://coinotron.com:3334 -u username -p pass --thread-concurrency 8192 -I 10 -g 1 -w 256
it ...
0
votes
7answers
98 views
3
votes
2answers
52 views
Why is pruning not considered already at the moment?
I understand that Bitcoin scales in several meanings (Scalability), and pruning is one important concept of it (SE Question). I also understand that a "Simplified Payment Verification" (SPV) needs to ...
0
votes
1answer
15 views
Is there any service that shows availability for third-party BItcoin-related services?
Bitcoin's ecosystem consists of numerous third-party sites and applications related to Bitcoin.
Is there any way to see the status (availability) of these?
1
vote
2answers
23 views
Can an unconfirmed transaction that only Blockchain.info shows be manually re-broadcast?
Blockchain.info shows a transaction that was created by Blockchain.info/wallet but for whatever reason the transaction didn't confirm right away and appears to not be getting re-broadcast (perhaps ...
4
votes
2answers
38 views
Is there a way to find the coinbase for a given block using only bitcoind commands?
ASICMiner includes hex(Mined By ASICMiner) in the coinbase.
I'd like to generate weekly statistics that include ASICMiner' solo-mining efforts, but I don't want to have to rely on blockchain.info or ...
2
votes
1answer
28 views
Is Storj still alive as a project?
gmaxwell posted this a few years ago:
https://bitcointalk.org/index.php?topic=53855.msg642768#msg642768
What became of the project?
2
votes
3answers
123 views
If the blockchain records all transactions, how does losing your wallet imply that you lose your Bitcoin?
My understanding is that the blockchain records every transaction that has ever occurred, and that, when we say there are x amount of coins at address y, what we really mean is that the blockchain ...
2
votes
2answers
62 views
Can anamurminers.com be trusted?
I'm thinking about ordering two 63 GH/s Bitcoin miner's from Anamurminers.com Also see: http://anamurminers.com/asic-miner. Can this company be trusted? They say they can ship two to the UK straight ...
2
votes
2answers
37 views
How is the network hash rate calculated?
Miners work on finding blocks but don't sent anything until they find the block.
Considering that, how can sites like bitcoincharts.com display a graph of the network hash rate?
1
vote
0answers
15 views
Stratum service_repository missing
Trying to get stratum working on my server.
When I start the server everything looks ok except I get this message:
***** Is service_repository missing? Add service_repository module to your python ...
4
votes
1answer
54 views
How to take advantage of the free transaction relay policy?
I have about 0.027 BTC total, spread over 272 transactions.
Was going to send them to someone, and then the transaction fees hit me: 0.0245 BTC. This agrees with the answer to this question -- (272 ...
1
vote
1answer
22 views
In Deepbit how do you get the Bitcoins transfered to your wallet?
In Deepbit I've mined a fraction of a Bitcoin. How do I get the money into my wallet? Here it says "Instant payout button is shown when your balance is at least 0.01 BTC and you received less than 3 ...
2
votes
0answers
22 views
rpc.target.bits management?
I have a new question...
Is the max settings for rpc.target.bits 20? I want to match this with our stratum mining software, and how many shares we're getting.
Right now, pushpool is getting more ...
2
votes
2answers
42 views
How does ASICMINER use the blockchain to record share ownership?
My understanding is that ownership of ASICMINER shares (direct ownership, that is; not passthroughs) is recorded somehow in the blockchain, itself.
How does that work, exactly? How can I confirm ...
1
vote
1answer
32 views
The change to the size of blockchain data files
The blkXXXXX.dat files in the new Bitcoin-Qt client (v0.8.1) are about 130MB each in size, which the old ones are about 1.9GB in size. Does anyone know the motivation behind this change?
3
votes
3answers
84 views
Does Bitcoin have inherent value if you can fork the project and create a new cryptocurrency easily?
I like Bitcoin and I like the ideas to create a limited number of bitcoins. However, I see a lot of new crypto-currencies. It seems anyone could fork bitcoin, change something in the algorithm, and ...
1
vote
1answer
27 views
When a difficulty change reaches the upper or lower bound (4x current), what is the implied impact on time per block?
Can someone work out the math that occurs with Bitcoin and Litecoin when the target changes to the hard coded minimum and maximum value, with respect to time?
In other words, if a lot of hashpower is ...
0
votes
1answer
78 views
+300
A Question About P2P Exchanges
Bitcointalk member BTCLuke suggested the following six criterion for a P2P Exchange:
A P2P Distributed Exchange MUST:
Be without any central points of failure, since a government or two WILL be ...
4
votes
1answer
63 views
Is there a wallet for different cryptocurrencies
For a person who has different amount of different cryptocurrencies it is actually annoying to use many clients. Right now just Bitcoin data is more than 15 GB, litecoin 1.5 GB and so on.
Is there ...
0
votes
1answer
81 views
Is Mt.Gox currently accepting Dwolla deposits or withdrawals? [closed]
I know that Dwolla stopped depositing/withdrawing funds in Mt.Gox due to a court order, but does anyone know if this is still in place?
Related
Why can't Dwolla send to Mt Gox?
4
votes
1answer
68 views
What is the database for?
I see the block chain is stored according to the block chain format specification. But I also see there is a database, which is currently a leveldb database. Why is the block chain stored in two ...
4
votes
3answers
102 views
Do miners have to hold all the blocks in memory?
Running a miner node, one would have to verify transactions. This includes checking all the inputs of all the transactions.
Does this mean that a miner must hold all the block-chain in memory ...
4
votes
1answer
46 views
Who came up with pooled mining?
What was the first implementation of pooled mining? Who came up with it?
What protocol did they use and where can it be found?
2
votes
1answer
65 views
What is the hash-rate of the Bitcoin network that results in the maximum difficulty?
According to https://en.bitcoin.it/wiki/Target the target is a 256-bit number.
As the total hash-rate of the Bitcoin network rises, this number decreases to increase the difficulty. How much hash-rate ...
0
votes
0answers
25 views
Mt Gox send_simple API withdrawal with OTP (Yubikey)
I have a yubikey linked to my Mt Gox account.
I'm trying to setup an Bitcoin API withdrawal using: https://data.mtgox.com/api/1/generic/bitcoin/send_simple
However I get error message:
OTP is ...
2
votes
1answer
50 views
Why can't I participate on bitcointalk.org?
I just created an account and spend a frustrating hour reading help menus and trying to figure out how to post or reply to posts.
None of the buttons -- New Topic, Reply, Quote -- seem to be showing ...
1
vote
2answers
56 views
cgminer not working on deepbit.net [closed]
I installed Cgminer and created the batch file to run it
cgminer.exe -o http://pit.deepbit.net:8332 -u myemail@gmail.com_workerName -p s3cr3t
but when I run it I get
[2013-05-21 00:39:34] Started ...
3
votes
2answers
36 views
What does this indicator mean in the right bottom cornor of the official Bitcoin wallet?
Circled in red:
When I hover over it I get the message "8 active connections to the Bitcoin network". Should Is this number too low and how do I change it?
3
votes
1answer
68 views
What is mining intensity?
Both Bitcoin and Litecoin have an intensity setting when mining. What does this mean?
0
votes
1answer
155 views
How much would cost to mine a block with Google Compute Engine?
Google has opened its Compute Engine and it has a price list. How much would cost to mine a bitcoin block with Google Compute Engine?
5
votes
1answer
42 views
How to use bitcoinjs with TestNet?
One of my colleagues is trying to use bitcoinjs with TestNet, but apparently it doesn't like TestNet headers, so it doesn't work. Is there any way to make to use bitcoinjs with TestNet? Is there some ...
2
votes
2answers
50 views
test cases for hash algorithm anywhere?
RFC4231 gives test cases for SHA256 with several different sets of gozintas and gozoutas. I'm looking for something similar for the SHA256 hash as implemented in the Bitcoin mining algorithm.
Based ...
0
votes
1answer
44 views
safe offline electrum wallet
There is a good tutorial for setting up a safe offline wallet with a regular bitcoin wallet here.
If I want to set up a safe deterministic offline wallet (i.e. Electrum). What would be the right ...
1
vote
1answer
44 views
MtGox http api “trades since” requests keep being timed out
i wrote a simple function to retrieve trades from mtgox with following HTTP API call:
https://data.mtgox.com/api/1/BTCUSD/trades?since
documented here: ...
1
vote
1answer
41 views
How does a client get the merkle branch of a transaction?
When the Bitcoin client receives a transaction, it checks if the transaction is confirmed. This is done by verifying that the transaction hashes correctly, in the merkle tree, to the merkle root in a ...
3
votes
2answers
63 views
Can it be mathematically proven that a block can be solved?
In other words, that there exists a nonce for the block that will result in sha256(sha256(block header + nonce)) hash under the current difficulty barrier number.
1
vote
1answer
29 views
What else can bitcoin inventory vectors be used for?
As described in the protocol specification bitcoin nodes respond to the inv command, which queries a node's knowledge of one or more objects, with an inventory vector. According to the bitcoin wiki, ...
