1
vote
1answer
18 views

Bitcoin-qt import private key crash

Importing a private using the debug console causes a crash, I always have to kill from shell the bitcoin-qt app and restart it. Is there any way to prevent this? Is there a way to import the private ...
1
vote
1answer
31 views

how do devs upgrade bitcoin core without affecting the live active network?

I've always wondered, how do devs developing on Bitcoin upgrade the system without affecting the live network? We typically see a site under maintenance when big companies revamp their site, but how ...
1
vote
1answer
90 views

What is a “mike”?

The MultiBit website mentions Bitcoin amounts being showns as "mikes": Everybody has a different way of wanting to display their balances and this is especially true when dealing with different ...
0
votes
0answers
33 views

Can MaidSafe host https sites?

I've seen that MaidSafe can be used for public file storage, but I can't find many details on what the capabilities and limitations are. Can a secure website be hosted with MaidSafe? If so, how?
0
votes
1answer
17 views

I sent bitcoin from my qt wallet while it was unsynced to another wallet, do i have to wait for it to sync?

it says it has not been broadcasted yet with 0 of 6 confirmations. My wallet is stuck on a block right now.
0
votes
0answers
8 views

How to calculate the error percentage with an older version of cgminer?

Most newer builds of mining software display the error %, but I'm using an older, custom build of cgminer (3.1.1) because it works well with my Zeusminer Blizzard. It shows you the total errors, but ...
-1
votes
1answer
16 views

Harvesting transaction fees

So let's assume I don't care about energy consumption and mining the famous reward for discovered block. Is it possible to set up a workstation optimized to harvest just the transaction fees? Do I ...
2
votes
2answers
21 views

Problems decrypting my bitcoin-wallet on android

So I dropped my phone in the toilet... Of course I immediately turned it off and went with the rice technique. I realized later that I had coins on my phone on the bitcoin-wallet on android . Luckily, ...
0
votes
1answer
29 views

how to config p2pool so that it can connect to bitcoind wiht HTTPS?

Now I have installed bitcoin with config rpcssl=1, and I have tested the connection with a java application. Everything seemed OK. Then I installed p2pool, and tried to connect to bitcoind (python2.7 ...
2
votes
1answer
18 views

what is a hallmark node in NXT (nxtcoin)?

can someone explain what is the purpose of a hallmark node for NXT?
0
votes
0answers
11 views

Pluggable Signers for Married Wallet

I would like to start a Wallet Protection Service, but simply add myself as a signatory to wallets using the Married Wallets standard. https://groups.google.com/forum/#!topic/bitcoinj/Uxl-z40OLuQ I ...
1
vote
1answer
15 views

Scripts within Scripts

I have read the following: https://github.com/bitcoin/bips/blob/master/bip-0016.mediawiki https://darkwallet.is/bip16-17 However, I would like to know, can one specify a pay-to-script hash that ...
0
votes
0answers
25 views

Standard Transactions and relaxation rules

We all know that there 5 common types of Standard transaction scripts. My question is if we create a script under what rules is it decided if it standard or non-standard? Under the hypothesis that ...
1
vote
0answers
20 views

How to get bitcoin address from the pubkey_hash using bitcoin-abe or something else?

I'm using: https://github.com/bitcoin-abe/bitcoin-abe to import the blockchain into a mysql DB it is almost done after 5 days. So I started looking at the data and didn't see any addresses. I know the ...
0
votes
1answer
29 views

Minimum tx amount where amount = fee

What is the absolute minimum amount which when transferred over a tx its value equals the tx's suggested fee? Is it the dust amount of 0.00005430 BTC? How is this value affected when that amount is ...
0
votes
1answer
318 views

Neither cgminer nor BFGminer detect my Zeusminer Blizzard. (Ubuntu/Linux/Mint)

I'm having trouble getting my Zeusminer Blizzard running; neither cgminer nor BFGminer detect it. Here are the results of lsusb: Bus 001 Device 025: ID 10c4:ea60 Cygnal Integrated Products, Inc. ...
0
votes
1answer
13 views

What does “Confirmed Exchanged” and “Estimated Exchanged” mean?

I am a newbie here, I wanted to know what does "Confirmed Exchanged" and "Estimated Exchanged" mean while fetching a user's Transaction history? example return that I got from an API as user stats: ...
0
votes
0answers
13 views

How do I get 'pending' market data with MQL4?

I am using metatrader4 and I can get any information 'but' the market data from btc-e http://docs.mql4.com/constants/environment_state/marketinfoconstants I.E. double pending = ...
0
votes
1answer
33 views

Blockchain and Bitcoin client difference of amount

I just made a transfer of 0.06 BTC, you can look it up on Blockchain.info The problem now is that my receiving client (Multibit) doesn't show those 0.06 BTC, it only shows 0.0001 BTC have been spend ...
0
votes
2answers
31 views

How to properly use PreviousTxnID in a Ripple Transaction?

At the moment I am implementing a transaction overwriting with NOPs in Ripple. I want to store information about a transaction I am overwriting inside of the NOP. Looking at the PreviousTxnID field it ...
3
votes
1answer
44 views

What are some of the pitfalls of a 100% proof of stake currency (pos) like NXT?

Bitcoin has the vulnerability of a 51% attack for a proof of work currency, but what pitfalls does a 100% proof of stake (pos) currency have like NXTcoin?
2
votes
1answer
46 views

Is there a service that let's me “send” bitcoins via email and doesn't require any account creation/login?

So I'm familiar with Coinbase and Blockchain.info approaches to this, but both these require registration/login (correct me if I'm wrong). I heard about something called Coinapult but on visiting ...
2
votes
2answers
42 views

How to sweep a bulk wallet?

If I have a bulk wallet with, say 100000 key pairs (address/private key) and I have received payments on any, say 1000 of them, how can I sweep all the coins to a new address? It would be even better ...
1
vote
1answer
117 views

How to generate a bulk wallet offline with python, java or c++?

I want to generate, say 100000 key pairs (address/private key). It should be done offline, without using websites/javascript , with a program on the command line. Of course, the software should use ...
1
vote
2answers
49 views

Is there any argument to be passed to CGMiner\AntMiner S2 to reserve amounts of hashing power for specific workloads?

I have an AntMiner S2 (1TH/s) and I'd like to mine both on BTC and NMC. Would that be possible, for instance, to use 50% of power just for BTC workloads and the other 50% for NMC? EDIT: What ...
1
vote
2answers
50 views

How do I trace a bitcoin transaction to find its location in the world

I need to trace a bitcoin transaction to find out roughly where in the world the wallet is located. Is it possible to use a program, or manual-method, to trace/track a bitcoin transaction to find the ...
0
votes
1answer
22 views

2014 Educational Content on Bitcoin

it's been a long time. I'm updating my udemy course on Bitcoin and I'm curious what educational content has been released since September of 2013 on Bitcoin. Specifically have you guys encountered an ...
1
vote
0answers
21 views

Other ways to determine the validity of a public key

Public key 3, 4 fits the equation of y^2 = x^2 + 7 Yet this comes up as an "invalid public key". How is that invalid? Sure, it deviates extremely from other numbers, but what other equations are ...
0
votes
1answer
39 views

Ripple partial payments

I've read on the Ripple Wiki page for Transactions about partial payments. I am wondering how a partial payment would look when data is polled about an account? Would the transaction amount be ...
0
votes
0answers
17 views

Is demurrage already integrated into Ripple? If so, how does one create a demurrage currency?

The Ripple wiki has a page about demurrage currencies being a possibility in Ripple. However, it's not entirely clear whether this feature is already implemented in the server or client, and if so, ...
1
vote
1answer
98 views

Who controls the features added to the bitcoin network?

I read an article on cryptocoinsnews about sidechains and they said bitcoin can implement new features but any bugs would be dangerous to the whole bitcoin network. What I don't understand is who ...
1
vote
1answer
41 views

Bitcoins being sent to another addres during a transaction

I realized a few days back, that if I send some bitcoins to someone, then it shows in blockchain an extra amount sent to my own wallet. So if I send 0.5 BTC from wallet A to B then blockchain shows ...
1
vote
1answer
33 views

Arithmetic operations in Bitcoin (OP_ADD, etc)

How do arithmetic operations work in Bitcoin? If I have: 5 OP_1ADD it is obvious that I will get 6 on stack. But what if I have to make OP_1ADD on ...
0
votes
0answers
17 views

When do P2Pool Node Fees get paid?

I have set up a node and been running for a few days now and a couple of payments have gone out form it which is good. These payments are going to a coinbase wallet and there is a local wallet ...
-1
votes
0answers
18 views

Coding a simple wallet [closed]

I really want to code a simple wallet with JavaScript. I tried to read some documentation from Bitcoin.org but it really didn't help. How can i create a simple Bitcoin wallet and use APIs?
0
votes
0answers
13 views

Is there a NXT api library where i can query addresses and make transactions to/from?

Is there an external library/site where I can make NXT api calls to retrieve balances and other data? Main reason im asking is because i dont want to install the NXT application on my server just to ...
2
votes
1answer
50 views

Can you assume that all inputs to a Bitcoin transaction are controlled by the same person?

When you are looking at a Bicoin transaction in the block chain and it has inputs from multiple addresses is it safe to assume that those addresses are all controlled by the same ...
5
votes
3answers
376 views

Is there any _true_ anonymous cryptocurrencies?

I've been looking into Bitcoin recently and stumbled upon numerous notes how Bitcoin is not anonymous at all, or how it's only partially anonymous and you can easily trace your funds. So, this ...
0
votes
0answers
16 views

Question about keypool size on the minig pool wallet

I have a lot of 2014-07-11 10:47:37 keypool reserve 4 2014-07-11 10:47:37 keypool return 4 2014-07-11 10:47:42 keypool reserve 4 2014-07-11 10:47:42 keypool return 4 2014-07-11 10:47:47 keypool ...
0
votes
0answers
11 views

Autopayout Setup on a wallet

I am creating an application which will be paying out some amount of BTC every hour to few addresses. Is there a service that allows me to program the transactions or a wallet, which offers a feature ...
0
votes
0answers
29 views

Signatures in Scripts

Most of the standard transaction scripts are using in ScriptSig a signature that prove that the references transaction outputs belong to the claimant. I have read the bitcoin wiki page ...
0
votes
1answer
20 views

Why does vanitygen warns me to update an up-to-date OpenSSL?

I tried to generate an address with vanitygen. Because I'm on a MBP 2010 it took a while onthe CPU (not finished yet, two times up to 20%) and now I am trying to get it working with my GPU (NVidea ...
1
vote
1answer
71 views

How do pool server's handle multiple workers sharing one connection with Stratum protocol

The stratum protocol supports authorizing multiple workers in a single connection. Unfortunately, I didn't find any documentation about how this should be handled by pool server software. If multiple ...
1
vote
1answer
41 views

Does Cryptsy reuses market IDs?

Cryptsy has a lot of markets. Each market has its own ID. Now markets have an ID in the range [1,220]. Sometimes old markets are deleted. Are the IDs of that markets reused or not? I have the same ...
0
votes
1answer
19 views

How to auto deposit bitcoins on btc-e?

BTC-e gives a new address to send to for every time a deposit is to be made. These addressees can be accesses through this url: Bitcoin deposit authentication required I am currently using python to ...
1
vote
1answer
35 views

Multibit application won't open

The app itself won't open. I recently did a system restore to a previous point in time but I'm pretty sure it was not before the point that I installed the multibit application. All the installation ...
2
votes
2answers
41 views

Are there examples of scripthash transactions in the blockchain that do not use MultiSig destinations?

BIP 16 uses an example of a one signature required transaction as a scripthash example: scriptSig: [signature] {[pubkey] OP_CHECKSIG} scriptPubKey: OP_HASH160 [20-byte-hash of {[pubkey] OP_CHECKSIG} ...
4
votes
1answer
75 views

What percentage of Bitcoins stored in a multi sign address?

I am looking for a statistic of the usage of multi-sig addresses over time. More concrete: what is the percentage of Bitcoins stored in a multi-sig address over time.
0
votes
1answer
31 views

Why I obtain this error trying to compile this wallet?

I am not yet a Linux guy and I am going crazy trying to install the MJ Coin wallet compiling it on Ubuntu 14.04. This are the only provided instruction to install it: Debian First, make sure ...
0
votes
0answers
21 views

How can I get the uncompressed public key from the compressed public key in openssl?

Given a private key, I can get the uncompressed or compressed version of the public key like so. EC_KEY* pKey = EC_KEY_new_by_curve_name(NID_secp256k1); std::vector<unsigned char> ...

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