0
votes
1answer
27 views

Incorporating Bitcoin into a app for person to person payments

Is it possible to incorporate Bitcoin into a app my company is developing in order to process person to person payments?
1
vote
2answers
16 views

Can I safely run Tor and Armory through Tor simultaneously?

Would running armory through Tor affect the anonymity of Tor Browser, or vice versa? Are there any unusual precautions I should take when doing this?
0
votes
1answer
27 views

Is new cryptocurrency that runs only in raspberry pi possible?

Is it possible to create a cryptocurrency software that can run efficiently on a raspberryPi and has a mechanism to detect (based on maximum coin production?) if a node is using a better computer so ...
1
vote
1answer
27 views

How in laymans terms do I restore a .dat BTC backed up wallet file on my mac please? [duplicate]

the bitcoin wallet backup.dat file is in my documents but I'm not an advanced computer user I have the complete bitcoin qt on my computer but don't know how to restore from the backup
-3
votes
2answers
97 views

What coin could I mine with CPU now-a-days? [closed]

I have computer where I have only CPU and don't need to pay for energy. What kind of virtual currency should I mine?
0
votes
2answers
91 views

Can I mine bitcoin without damaging my hardware?

I have a 900w gold certified power supply, an AMD fx 6350 @ 4.39ghz, a nvidia gt 630 2gb GPU with a fan and 8GB DDR3 RAM at 1600MHz. I'm wondering what mining for about 8 hours a day would do to my ...
0
votes
1answer
36 views

How do I use the RPC command “decodescript”?

I used "decodescript" on a transaction inputscript 304402206c4eba989dd5f87b7814f25ec8b9e08f955d30b299d963df8955639aa0a0f9bc02203c4d41b047d4dc616da101911c512e89255e2c3261733f030f9d1329ca2822dd01 I ...
1
vote
1answer
70 views

Is Bitcoin still an experiment?

Definition of the word Experiment: A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact. If Bitcoin was/is an experiment, I don't think it's ...
0
votes
1answer
47 views

What's the best way to introduce Bitcoin to the family and friends? [on hold]

What's the best way to introduce Bitcoin to the family and friends? Has anybody succesful experience in the topic?
0
votes
0answers
13 views

javascript convert from usd to btc (Is btc-e ticker faulty?)

Is the https://btc-e.com/api/3/ticker/btc_usd ticker faulty? My code takes a long array of btc-e raw price data (there ticker) and tries to convert each price into Satoshi. The array is named ...
1
vote
0answers
27 views

Which exchanges support U2F authentication?

I got myself a nice security key (Yubico Fido) today, which utilises the U2F protocol. But to my surprise not a single Bitcoin exchange seems to support this yet, only Google itself. So which ...
1
vote
1answer
49 views

bitcoind JSON-RPC interface timeouts under unit tests

I am running unit tests against bitcoind which do JSON-RPC requests in high rate. Random failures are an issue. E.g. if you have something like this in printconsole logs: ThreadRPCServer ...
1
vote
1answer
31 views

Safely interrupt -reindex?

My database became corrupted and I had to reindex: bitcoind --daemon -reindex It takes my computer quite some time and CPU power. It's been running for an hour but it will take at least 4 more ...
1
vote
1answer
98 views

How do I start mining?

I have only known about Bitcoin for maybe a month now. I don't know what I need to start mining, but I had these two programs that were said to be needed for the Bitcoins. I deleted these programs ...
1
vote
1answer
67 views

Explain this comment on nNonce from the bitcoin miner.cpp source?

This comment is in the 0.9.3 miner.cpp bitcoin source, right above the ScanHash_CryptoPP definition. // // ScanHash scans nonces looking for a hash with at least some zero bits. // It operates on ...
0
votes
1answer
15 views

Which KYC solution providers are used by Bitcoin companies?

I am wondering which Know Your Client solution providers are used by Bitcoin companies?
0
votes
1answer
39 views

My balance gets sent back to me [duplicate]

I'm using the blockchain API to make a "send to many transaction". In the recipients I only put other people addresses, but somehow the API sends the remainder of my balance back to me. For example: ...
0
votes
1answer
60 views

How do I make a transaction

I want to make a multisig transaction but dont how to do it. I am using this site: coinb.in And what is Txin or N that it also can be called.
0
votes
1answer
58 views

listtransactions RPC call

bitcoin-cli help listtransactions returns: listtransactions ( "account" count from ) Returns up to 'count' most recent transactions skipping the first 'from' transactions for account 'account'. ...
1
vote
1answer
28 views

About block rollback

I had a problem. We assume node A get a newest block with height h1, through a serial checking, it thought the block valid, so it store the block into disk. But in the next some seconds it got another ...
0
votes
1answer
38 views

How can I sign a message with a multi signature address?

I want to use message signing to prove control of a multi signature Bitcoin address. Is it possible? In theory it must be. In practice, are there any Bitcoin wallets that allow this? Specifically, how ...
-1
votes
0answers
47 views

Make raw transaction

I was making a raw transaction but I needed some values. First one it this: Txid, How do I get that without the bitcoin client? Second one: What is Txin and how do I get that?
1
vote
1answer
29 views

Query Blockchain: Reference previous transaction in “txin”

I'm currently working with a postgresql database I've downloaded here which has the following schema and has probably been parsed using Bitcoin-ABE (I added some indexes and redundant columns): Now ...
2
votes
1answer
80 views

Get available exchange rates of Ripple's built-in exchange

I'm not hundred percent sure I got the whole principle of Ripple right. But as far as I could understand it is possible to deposit a currency into my ripple account/wallet via a gateway (e.g. USD via ...
1
vote
0answers
19 views

Multibit crashes on startup with PCA2 error (Program Compatibility Assistant)

I double clicked on the Multibit Icon which I normally do but this time the program does not launch. I don't even see in in the task manager. I went to the file location folder and double clicked it ...
0
votes
1answer
32 views

My Bitcoin wallet is out of sync after connecting for the first time

It's 4 years out of date. I have tried using a different network. Same thing. Don't know what to do but would appreciate help.
1
vote
1answer
13 views

Armory paper backup without private keys

Do I need to install Armory on a computer to move my BTC out of an armory wallet?
1
vote
1answer
33 views

Why one would need *extended* public keys for auditing a bip32 wallet?

(I am reading the bip32 for an altcoin development.) In the bip32 specification, it is written that listing all incoming and outgoing payments of a hierarchical deterministic wallet would required ...
2
votes
0answers
25 views

Proving the address belongs to a shared wallet where one can control some deposits and withdrawals

A bitcoin exchange is using a shared web wallet where its users deposits and withdraw bitcoins. The withdrawal transactions are merged, so that the pending transactions of several users are grouped ...
2
votes
1answer
207 views

What's the purpose of running Armory through Tor?

What's the purpose of running Armory through Tor? Is it only useful once you get to the point where you start sending Bitcoins?
0
votes
1answer
42 views

NoClassDefFoundError when using Java Coinbase API

I've simply downloaded an API .jar file of a Coinbase. I've created a project dynamic web project. I added successfully into a reference library that API. Here is my simple program: import ...
3
votes
1answer
80 views

Unspent outputs get spent automatically

After generating a 2-out-of-3 wallet (using brainwallet http://ms-brainwallet.org/#generator) I am able to store my private/public keys for each of the participants. Afterwards I send a small amount ...
1
vote
1answer
37 views

What happens to off chain transactions when the blockchain is reorganised?

Many companies seem to use off chain transactions to transfer bitcoins between their own customers. What happens when a side chain gains dominance and no longer contains a block with the underlying ...
0
votes
1answer
26 views

Armory paper Backup

I have the paper backup for Armory Wallet but do not have access to the computer which the Wallet was created. How to I export the BTC?
0
votes
0answers
12 views

Using API/RPC to identify transactions with inputs from “dormant” addresses

Is it possible to identify, for eg, large transactions of Bitcoin which are using inputs from "dormant" (>24 months) addresses? Certainly it's possible with some coding and API calls but is there a ...
1
vote
2answers
77 views

How do I spend my Bitcoins without waiting for Bitcoin-Qt to sync?

I purchased $50 from ExpressCoins and now it's transferred to the address, but I hadn't realized that to use your program, I have to download 20 gigs of information. Is there a way to access my coins ...
1
vote
1answer
55 views

How do I find the txid and vout values for an input I want to spend?

I was in the http://coinb.in/multisig/#newTransaction and wanted to make a input but it needed 2 values. Txid, How do I get that? TxIn/vout, Whats that and how do I get that?
-1
votes
1answer
62 views

Bitcoin 101, need some knowledge [closed]

I am new to bitcoin. How do I check if my blockchain is working? I have tested some free bitcoin sites but neither of them have worked.
2
votes
2answers
34 views

How do I calculate the txid of this raw transaction?

I'm trying to parse a bitcoin block using Python. I called getrawtransaction over JSON-RPC. I got this: ...
0
votes
1answer
65 views

Is bitcoin arbitrage profit varies with BTC market price?

Consider the following scenario, I have 365 USD in Btc-e and 1 BTC in Cryptsy, now I bought 1 BTC at a price of 362 USD in Btc-e and sell it on Cryptsy with 370 USD, now I made the profit of 4 USD ...
2
votes
2answers
66 views

Multi-currency wallet api

I need a api or an application that can generate and handle (send/receive and so on...) multi currency wallet. For an example: It can generate dogecoin address, bitcoin address, litecoin address, ...
0
votes
1answer
30 views

Has the nonce used in mining been sized?

In the mining process, everytime a block has to be confirmed, a certain hash with an incremental nonce is generated: now my question is: if the nonce is a 32 bit number it can assume a value between 0 ...
0
votes
0answers
12 views

Using custom parameters in blockchain.info's HTTP payment callback

I have a node.js app that uses blockchain-wallet npm module to generate a new receiving address every time a client wants to pay. blockchainWallet.newAddress({label:customstring},function(err, ...
0
votes
2answers
115 views

How to fork an Altcoin Which has 0 Reward Block to continue mining after the LAST POW BLOCK

Im trying to learn how is it possible to Hard Fork an Altcoin Blockchain to Continue the Mining Phase after the LAST POW BLOCK. The Block Reward is already 0 and the LAST POW stops at Block 8000. And ...
0
votes
4answers
95 views

Monitor non-wallet bitcoin addresses for new transactions

This is usual checkout functionality. Show address to the user and needs to monitor it for new transaction during n minutes. Addresses are not unique for each payment. Optional:it would be good to ...
0
votes
1answer
32 views

Can two outputs from the same transaction be spent separately?

I am reading the transaction part. I don't know how to get the transaction hash. Does the whole transaction (include its vins and vouts) get hashed? If a transaction has two vouts (spent by different ...
0
votes
1answer
16 views

How can I find out if a transaction used a specific vout as its input?

I want to know if a certain output is spent. I am not using Bitcoin, I do not have a gettxout RPC call available. How can I learn if a vout is referenced as an input somewhere in the blockchain or ...
0
votes
2answers
107 views

I have free energy; good idea to mine BTC/LTC?

I don't need to pay for power to my computer. Is it a good idea to mine LTC or BTC on Intel Core Duo processor? My CPU is 2 x 2.6GHz (computer woks 24/7)
0
votes
1answer
29 views

Redeem bitcoins of non-standard transactions made with eligius

As I understand it, Eligius is the only miner pool accepting non-standard transactions. The Opcodes for the scripts are here. Some use cases for non-standard transactions can be found here. My ...
0
votes
1answer
64 views

How to turn bitcoins into cash money?

hi i'm asking about how to turn bitcoins into a cash (USD or EURO) that you hold in your hands so i can use it in real life not on the internet I don't have a credit card, and I'm in a country (IRAQ) ...

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