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Questions tagged [bitcoin]

GENERAL BITCOIN QUESTIONS CAN BE ASKED ON https://bitcoin.stackexchange.com Bitcoin is a peer-to-peer digital currency with no central authority. Transactions are managed entirely by the network. Please ask only programming questions about Bitcoin.

is a 1st generation, open source, peer-to-peer digital cryptocurrency and a distributed payment network with no central authority. Transactions are managed entirely by the network in a decentralized manner. These transactions are verified by network nodes through the use of cryptography and recorded in a public distributed ledger called a .

Bitcoins are created as a reward for a process known as mining. They can be exchanged for other currencies, products, and services. As of February 2015, over 100,000 merchants and vendors accepted bitcoin as payment.

The official website of is Bitcoin.org

There's also a Bitcoin StackExchange site that's dedicated to Bitcoin.

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Need to get a jsonrpc for a altcoin wallet but cant install a python module for python3.6

Hi I want to install a module on python 3.6 on Ubuntu I want to install this https://github.com/dpifke/pifkoin because you can you altcoins with it and i cant find a way to use altcoins only btc any help. python3 setup.py install Traceback…
Kolby Moroz
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Bitcoin ticker + fontawesome

My task was to write a function that gets Bitcoin trades from JSON link, change interval with buttons, add fontawesome arrow up/down/line depends if the rate went up/down/no change and display it on the website. I have everything except…
Maciej Mazurek
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How to get received/sent transactions from bitcoin core?

I have configured bitcoin core daemon. Using JSON-RPC I want to build web wallet. This why I need list of all incoming/outgoing transactions. listtransactions returns only incoming transactions. Questions: How to get outgoing & incoming…
Максим Владимирович
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Open Source Shopping Cart for selling game cd key

I'm looking for an open Source Shopping Cart like Opencart but specific for selling game cd key which no registration require for buyers. I just need their email address then will automatically send cd key after they pay. Payment gateway supports…
Vincent
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ecdsa communication bitcoin library

from bitcoin import * Alice_private = 1 Alice_public = privtopub(Alice_private) Bob_private = 2 Bob_public = privtopub(Bob_private) #they exchange publics Alice_message=ecdsa_raw_sign(sha256('Hello'), Alice_private) Bob_message =…
Makaroniiii
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how to use Cryptocapital API v4, can't find sdk download link

Cryptocapital.co provides API to exchange crypto currency, I want to access their API to integrate with a website, they do have a documentation here - https://api.cryptocapital.co/v4 and they have a sample code as below var key =…
Rishabh Gusain
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Blockchain: Nubits vs Bitcoin speed

I am researching about Nubits and Bitcoin, I realized Nubits is faster than Bitcoin! How could it be possible while Nubits implement on Bitcoin Blockchain?
Arash_Sr7
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Kraken API <-> PHP withdrawl issue

I need help with the kraken API. I have created the connection and I am able to trade various pairs but now I need to make an automatic withdraw using their API. For the trading pairs I have the following running which buys 0.002 BTC using EURO $res…
AgoraLive
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How to get the address the sender sent bitcoin to

Basicly, I'm building a server which has a bitcoin wallet with many receive addresses. The addresses can be linked to different clients. If you send coins to any address they are gonna end up into the servers wallet. The question is, how do I know…
Juubes
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Where to Broadcast Bitcoin Cash Transaction?

Using JSON HTTP POST; what online service do I best use to broadcast a Bitcoin Cash transaction? I'm looking for the equivalent of https://blockchain.info/pushtx
LucasKarlsson
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How to set amount of transaction fee using BitcoinJS?

How to setup transaction fee using BitcoinJS? For example, i have unspent TX on 0.2 BTC lets call it myTx, and i want send to Bob 0.1 BTC, but if i do something like this: var tx = new bitcoin.TransactionBuilder(); tx.addInput(myTx, 0) var…
Николаев Сергей
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what does this code in bitcoin source code mean?

I am learning SHA-256 algorithm by reading the implement in the bitcoin source code (https://github.com/bitcoin/bitcoin/blob/master/src/crypto/sha256.cpp#L232). But I am confused with this line: Write(pad, 1 + ((119 - (bytes % 64)) % 64)); I do not…
hliu
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React Native: How to open a Bitcoin URL?

How do you open a Bitcoin URL in a react native app? I am using React Native Linking to detect if there are any apps on the phone that can open a Bitcoin URL formatted according to BIP21. I have 3 apps installed that should handle it: 1) Coinbase 2)…
Jon Cursi
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How can I use a gitian environment for building a local project?

I'm working on a project (a fork of bitcoin) that has initially been commited to github that uses the gitian build system. At this point I'd like to set up a local environment that allows me to change code and test changes without commiting them to…
Lurzim Sabahudin
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BlinkTrade Rest API Returns Nothing (Account Balance Request)

Using python 3.6.1 attempting to connect to foxbit (blinktrade platform) to check account balance I run the code in my terminal and it returns nothing. No traceback or anything. Just blankness. Any ideas? Thanks in advance! import hashlib import…
New2VBA
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