0
votes
1answer
7 views

Why could UpdateTip be taking so long?

It has been 10 days since I ran bitcoind. When I opened it yesterday, I waited for about 40 minutes during which I could do not much except for waiting because my computer became so slow (high CPU ...
1
vote
1answer
13 views

Frequency of earning a bitcoin transaction

I'm running bitcoinQT on a dedicated server with a good connection ( although, only a modest cpu ). Assuming I have bitcoinQT running 24/7 how often would I expect to earn bitcoin transaction fees ( ...
0
votes
0answers
7 views

Gitian Build Issue - Windows

Got a little issue when compiling Windows QT using Gitian. BTW Im using a Ubuntu 12.04 64bit VPS. So I am using the instructions here : ...
2
votes
2answers
23 views

What's the point of trading BTC if you're limited in the things you can buy

If you're trying to make a profit by trading BTC... fine, I get it. What other reasons are there to trade BTC?
0
votes
0answers
15 views

Is there an API that provides this functionality?

Sorry I couldn't make my title more descriptive, but it might be a little long winded. What I need is the following, and preferably an API that can support the popular crypto currencies, not just ...
0
votes
0answers
13 views

Building from Source on MAC OSX 10.9 Error

Hi i'm building Bitcoin from source and am having some problems. Curious if anyone would be able to help me. When I try to make I get: In file included from ./json/json_spirit_reader_template.h:9: ...
0
votes
1answer
18 views

NXT single address per user vs bitcoin single address per transaction

In bitcoin, the anonymity is ensured by creating a new address for each transaction and by associating this address with a wallet. As far as I understand, with NXT, you use your account (calculated by ...
0
votes
1answer
16 views

Building Bitcoin from Source on MAC OSX 10.9

so I'm trying to get bitcoind running on my Mac and I cloned the source code from github. What I tried doing: brew install autoconf automake berkeley-db4 boost miniupnpc openssl pkg-config protobuf ...
0
votes
0answers
9 views

Are there any BitAuth OpenSource plugins for Chrome, Firefox, or other browsers?

I'm interested in using BitAuth to sign into websites. Are there any plugins for browsers? I'm only interested in FOSS / Open Source implementations...
1
vote
1answer
35 views

Why does re-signing a message in bitcoin-qt produce a different hash

I just noticed that if you repeatedly sign the same message in bitcoin-qt, the signature changes. Why is this?
-1
votes
1answer
46 views

Why is there a need for different exchanges?

In laymen's terms, why is there a need for different bitcoin exchanges? Is it currently the wild west and eventually these exchanges will consolidate. Or can exchanges actually provide different value ...
-4
votes
1answer
46 views

what IS Bitcoin's pourpse and what do they need me to do and why do they need me to do it and what is said thing for? [duplicate]

this program is advertiseing btcoins but not eplaining what they want to pay me to do and why dos it need to be done? its running algorithms but what is it doing that for? is it trying to protect ...
0
votes
1answer
40 views

Is it possible that someone forks the chain?

I'm not sure I understood everything but all the clients always keep the longest chain, ok. So, what happen if an evil person inject bad transactions in a block and successfully mine it (given the ...
1
vote
1answer
24 views

colored coin possible with ring signatures and stealth addresses?

It is understood that colored coin is possible with stealth addresses, but what about ring signatures such as how they are used in the cryptonote protocol (Monero, Bytecoin)? I feel like coloring the ...
0
votes
1answer
29 views

How to make bootstrap.dat work with bitcoin qt

I have downloaded the bootstrap.dat torrent to make bitcoin qt synchronize faster. I have searched the bitcoin directory by writing in the Run Application "explorer %APPDATA%\Bitcoin" I have dropped ...
-3
votes
1answer
30 views

How many BTC a month using Ant U1? [on hold]

I've now joined bitminter and setted up slush's pool as backup. I can't wait a month so I wanted to ask you guys. Now my question is: How much do you usually charge @ 2 GHs/s for a month?
0
votes
0answers
17 views

Windows 8 Tile Change Background Color

Does anyone know how to change the tile colour in Windows 8 in the source code so that I can create and distribute clients while controlling background tile color? I found the following which ...
1
vote
1answer
18 views

Colored coin with stealth addresses

Is it possible to use colored coins with stealth addresses? My main consideration being that coloring a unit of cryptocurrency requires being able to keep track of its exact location at all times ...
1
vote
1answer
49 views

Confirmation limit

When seeing transactions I see that the number of confirmations keeps increasing without any limit. I wanted to know if there is any time limit on including a already confirmed transaction in a block ...
1
vote
1answer
28 views

Can unrelated people know the private key of a multisig address?

After a multisig address is created, can one of the private keys of that address be known by an unrelated person and the security of that address still remain uncompromised? My understanding being ...
0
votes
1answer
13 views

Creating MultiSig from server

I want to create a MultiSig address where user A sends the public key of its bitcoin address (gets saved in the database). User B gets notified that he must send his public key to create the 2-3 ...
0
votes
0answers
12 views

Problems accessing BTCE api after certificate change?

I used to have a bot that interacted with the btce api through java/netbeans, and then after the MtGox fiasco I shut it down for a while. Now I am trying to start it back up, but while bitstamp and ...
0
votes
1answer
19 views

Bitcoin-qt transaction not initiated by the wallet owner

I was just mining for some Dogecoins with Eobot and parallel I had BGFminer set on solo mining + 4 pools from eclipse. The issue is that the moment the Eobot kicked in (it started on mining Dogecoins ...
0
votes
1answer
32 views

Where can new cryptocurrency features be found? [on hold]

I was wondering what new cryptocurrency features may be introduced. How can I find published new cryptocurrency features?
0
votes
1answer
28 views

Transfer wallet to new server

I have been running a bitcoin app in an old server. I need to move everything to a new server but my question is this: is there a way I can transfer my bitcoin wallet (bitcoin core) to the new server ...
-2
votes
1answer
60 views

Solo-mining with 1,6 - 2GHs/s

I'm using Antminer U1 (1,6 - 2,2 GHs/s : 2 Watts : No cooling : Using RaspberryPi 512 MB - MinePeon) Is it better pooled- or solo-mining? (BTC)
1
vote
1answer
37 views

Transaction malleability

Having spent quite some time reading on this issue, I still don't get some things. For example, once I create a tx and relay it to the network, who can alter the tx id? Just me? The recipient(s)? Can ...
1
vote
1answer
27 views

Anonymous transactions technology for a cryptocoin?

I’m thinking of investing in a cryptocoin with anonymous transactions feature. So far there are 3 well-known technologies for that: coinjoin (Bitcoin), masternodes (Darkcoin) and CryptoNote ...
0
votes
0answers
20 views

What design should I go with to implement Stratum in C?

I wanted to implement a Stratum server in C, but while I haven't written a single line of code, that is partially because I am unsure of what kind of design I should go with. I've learned that ...
0
votes
1answer
17 views

Multi-signature transactions: Address based? What is the limit?

As I understand them, multisig transactions are actually transactions from multisig addresses (addresses requiring n sigs). Is this correct? (in other words, "multi-sig transactions" == ...
0
votes
0answers
32 views

Solo mining (for any coin) works on Windows but not Linux. Why won't my Linux setup work even though it's identical?

The title says it all. Here is a sample configuration file. This is from OSC (OpenSourceCoin), but it looks the same for every coin except for the ports and the nodes. server=1 listen=1 daemon=1 ...
0
votes
0answers
9 views

Importing a UTXO of a Pre-Forked Altcoin to a Post-Forked Coin?

I want to know if there is a way to copy a UTXO set from a pre-fork coin into a post-fork coin. The only reason to do this is to preserve the coin's progress. Is it possible, though? From my ...
0
votes
1answer
40 views

Bitcoin trading: security

I have seen different trading websites on Bitcoin and a question came to my mind: Security Why do they require so much identity verification? If I remember correctly MtGox (despite what later ...
1
vote
0answers
44 views

How does the Bitcoin forex work?

Does it work differently in relation to a regular forex because of its underlying technology? How can the market calculate its value?
0
votes
4answers
61 views

How To Lower The Disk Space Needed For Full Blockchain?

I'm looking to run bitcoind on a virtual machine. However the main nets Blockchain size is over 21GB, and growing. Is there a way to compress this down or lower the amount of disk-space needed for ...
0
votes
1answer
20 views

Can you put additional data in the payload?

It seems to me like you could put arbitrary data into a transaction payload, since it is JSON. Is this true, can a sender add additional fields to the transaction JSON? Or if thats not possible, could ...
1
vote
1answer
26 views

I cannot see the expected OP_CODE in transactions

According to different answers on this site the format of the standard TX claim script should be [OP_PUSH DER(R+S)+HashType OP_PUSH PubKey] The OP_PUSH code is 4C, 4D or 4E depending on push length. ...
0
votes
1answer
30 views

How to send money using blockchain API?

I am not very familiar with php but I just want to know how this works. I am trying to use the blockchain API to send some money for testing purposes but the transaction isn't taking place. My current ...
2
votes
0answers
20 views

How do I extract my private keys from a protobuf wallet?

Recent changes to Andreas Schildbach's Bitcoin client for Android have removed the option to export private keys. This has been replaced by an option to back up the entire wallet. Unfortunately, the ...
0
votes
0answers
6 views

Electrum command line: how to get the number of confirmations of a transaction

How do you get the number of confirmations a transaction has via the command line?
0
votes
1answer
15 views

Ripple - how to properly set flags?

At the moment I'm trying to add flags to my custom Ripple transactions that I submit through JSON RPC. However, when I send my request: { "id":1, "method":"sign", "params":[ { ...
1
vote
1answer
25 views

How to use BlockChain API?

I am a complete noob to PHP. But I just wanted to know how can you use the BlockChain API to get your wallet balance. I tried but could get no result. I do not even know how to print it. Please help. ...
2
votes
2answers
54 views

How to schedule a bitcoin transaction?

I just wanted to know if you could schedule a bitcoin transaction. For example I want to send some BTC to someone exactly at 4:00 pm but it is 1:00 pm at my current place. Is that possible so that my ...
1
vote
1answer
20 views

Bitcoin user characteristic

I am starting with the execution of internet marketing activities for one Bitcoin gambling site that I owe, and I am trying to figure what best describes owners of bitcoin. Are there any ...
-1
votes
2answers
25 views

debug window of wallets

For all noobs and cryptocurrencies, is there anywhere a tutorial on how to use the wallet? I've noticed several wallets that are just the same thing with a different name, but so far the only thing i ...
-1
votes
0answers
20 views

How to install python-bitcoinrpc & btc-update.py

how to install python-bitcoinrpc & btc-update.py on my VPS server? (Bitcoin node) In code I see this: access = AuthServiceProxy("http://RPCUSER:PRCPASSWORD@127.0.0.1:8332") (5th line) What I ...
0
votes
0answers
29 views

New To Bitcoin…Please Help! Bitcoin not received from sender to Armory Wallet!

I am in desperate need of assistance! I am new to Bitcoin so please apologies for the lack of knowledge in these matters guys....We all have to start somewhere ;) I sent my Bitcoins from the ...
-1
votes
0answers
11 views

Stratum Mining and pool connection with Mysql

How to get account id for a particular worker if gets connected in stratum? Can anyone please guide me.
0
votes
2answers
32 views

Bitcoin core: why does the wallet file contain transactions?

I really don't understand why the strong coupling here. I mean, whenever I go and make a backup, if there's a new transaction involved, the hash of the backup changes. I wonder why this is. And ...
0
votes
1answer
22 views

Explanation of what an OP_RETURN transaction looks like

How is OP_RETURN used and why was it introduced in the first place?

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