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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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How to use bitcoin blockchain for image usage?

I have read a little about blockchains and found there is lot of blockchain npm libraries available. How can I take benefit of the bitcoin blockchain to authenticate documents : to obtain a proof a document has not been falsificated. Any clues,…
yarek
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How can we setup the BitGo testnet and livenet?

How can we setup the BitGo testnet and livenet for the below code? I want to setup the MultiSig Wallet and want to set up our own bitcoin node. But it seems BitGo doesn't open the node code for setup. If anybody has done this so please let me…
Ashish Sharma
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Create new wallets on the Blockchain

I am new to bitcoin and blockchain , I want to build a digital currency exchange But don't want to interface to an external site(Polonix for example). I want, as a first step, to create wallets for all kinds of coins Does "Blockchain" only work…
Nomi AA
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OHLC data for bitcoin using bitfinex's API - issue with API

Using this API call I want to get a complete BTCUSD data set for 5 minute OHLC data. I tried the following code in python but the API isn't returning the right data: import requests import pandas as pd r =…
David Hancock
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payto method electrum wallet jsonRPC PHP

Yo! I just started a script with php and electrum wallet using jsonRPC. Call as getaddressbalance() work, but what's about payto? I tried : $bitcoin->payto("adresse","ammount"); but its not looking to work. Any ideas? addrequest()?
btc4cash
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Is it possible to create a bloackchain network which will not in increase in difficulty?

I would like to create a blockchain network which will stay at the same level of complexity, is such a thing possible? Thanks
Eliahu Horwitz
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Python authenticated calls to bitfinex exchange

I am having some major issues here with making authenticated calls to bitfinex. I have followed the documentation and a few examples but I can not get this working. I keep getting Invalid Signature as the response and its not authenitcating. Any…
xxen0nxx
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Python and Bitfinex Web Sockets.

I know this may be a dumb question but I am still learning web-sockets with python. Here is the code I have for testing out the api. import json from websocket import create_connection ws =…
xxen0nxx
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How I can get bitpay.pri and bitpay.pub files

I am using Bitcoin payment Gateway. I have cloned repositry from https://github.com/bitpay/php-bitpay-client and also made account on https://test.bitpay.com. I am using TestNet as well. In Git repsositry https://github.com/bitpay/php-bitpay-client…
Jass
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Getting an error on Breadwallet when I run the app on Xcode 8.2.1

I am getting an error that unable to resolve it. Please check the below image. I have downloaded the code from https://github.com/voisine/breadwallet Please help me.
Gautam Sareriya
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Bitpay Ruby client funtion error

Whenever I create an invoice using bitpay ruby client library fucntion client.create_invoice(price: amount, currency: 'USD') I get error like this * BitPay::BitPayError Exception: Not authorized for facade: pos
Ayaz Ahmad Tarar
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Transaction on bitcoin address derived from bitcoinjs-lib not showing in Bitcoin core

I have generated the xpub using bip32.org and derieved random address using xpub var hdNode = bitcoinjs.HDNode.fromBase58(derivedPubKey); hdNode.derive(index).pubKey.getAddress().toString(); the Private wif generated via bip32.org imported in the…
Priyanka Agrawal
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Get Bitcoin historical data in the interval of minutes

Can anybody tell me where can I download Bitcoin historical data? I'm able to find the daily price. But that is not enough for my project. It will be better if I can have the price data in the interval of minutes.
touchdown
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Bitaps.com REST API

I am using bitaps.com to receive bitcoin payments on my site, and I create the address perfectly by calling this. /api/create/payment/{payout_address}/{callback}[?confirmations=0-10] and when I do that I receive this: { "address":…
Matthew Bergwall
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Bitcoinj - create temporary walllet

I'm new in bitcoin. I need to create something like a temporary bitcoin wallet for the currency exchange app. The wallet should be alive just one exchange transaction or 2 days(if the transaction wouldn't confirmed) and then should be removed. But…
Aventes
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