I am looking for a way to simulate a 1000 node bitcoin network on my private LAN/Wifi network. I read the developer's guide: https://bitcoin.org/en/developer-examples#regtest-mode which mentions ...

I've seen a few Bitcoin Address form validation scripts for various languages, but surprisingly can't really find anything for two common web languages, Javascript and PHP. Here's one for Python,...

In my knowledge, bitcoin is a p2p protocol and a p2p protocol must have a dedicated central server. But it is said that bitcoin is decentralized.

Is there anyway to list all transactions from given address by using API RPC to bitcoind? Actually, I'm using btcd and most non-wallet functions are the same with bitcoind, but I can't find any met...

I'm trying to cross-compile cachecoin binaries on a linux host using gitian and i686-w64-mingw for a windows target. The compilation works fine until the final step of static linking of the depend...

I use web3 and provider mainnet. I do 2 transactions by contract. first is approve method and another transaction is multitransfer. I store second signature in database. if first transaction is suc...

I am wanting to ask if Pandas DataReader may be used to extract Bitcoin information from blockchain.com ? I am aware we may use it together with Alpha Vantage API Key to extract stocks through: imp...

I'm writing simple code in C++ using OpenSSL to generate valid bitcoin address - private key pair. I'm using this snippet to generate public key from given hex-form private key: #include <stdi...

I have all 150GB Bitcoin blocks now what? How to open them and read them in Python? I need to extract all used hash160 so far I tried to open them with Berkeley DB but no success it seems these fi...

I checked all the functions I can think of but I don't see anything for this in the Binance C# API: https://github.com/JKorf/Binance.Net All I want is to list the coins I am showing in a list view ...

I am trying to check the balance of a given Bitcoin address by using ONLY the locally stored blockchain (downloaded via Bitcoin Core). Something similar to this (by using NBitCoin and/or QBitNinja)...

I understand bitcoin uses blockchain technology to maintain a decentralised ledger of all transactions. I have also read many posts eluding to future applications of blockchain technology, no...

in the excellent reply to this question: How to generate Bitcoin keys/addresses from a seed in Python? there is a discussion of 3 ways to generate a BIP32Key from mnemonics or extended private keys...

I am trying to identify whether a transaction in the bitcoin blockchain has been confirmed or not. I have accessed a JSON representation of the transaction from blockchain.info using this url: http...

I'm currently working on a little program for backing up your Bitcoin Core wallet. I am using BitcoinLib v1.15.0 in C#. IBitcoinService bitcoinService = new BitcoinService("http://127.0.0.1:83...

I have a byte array of the form [4,-101,122,-41,-30,23,-28,3,..] which I want to convert in the form 6d69f597b217fa333246c2c8 I'm using below function function toHexString(bytes) { return bytes.m...

I'm trying to get data from Google Finance in Google Sheets with this formula: =GoogleFinance("CURRENCY:BTC") But I'm getting this error: GOOGLEFINANCE, the query for the symbol: 'CURRENCY:BTC'...

I'm trying to use the elliptic curve secp256k1 in Go with the library "crypto/x509". After the key pair generation, I obtain respectively the public key pubKey and the private key privKey. After th...

I want to get info about commissions on Binance. Especially about trading commissions (exchange operations, for example I want to buy ETH and pay by BTC). I've looked over all binance git: https://...

I am trying to come up with a regular expression to match Bitcoin addresses according to these specs: A Bitcoin address, or simply address, is an identifier of 27-34 alphanumeric characters, be...

Is there any way to use a smart contract on RSK to query the addresses of all current pegnatories? And to do so without relying on 3rd party oracles on RSK? For context: The intention here is to ma...

Is there a way for smart contract on RSK to fetch on-chain data on Bitcoin not depending on trusted oracles? I just found a proposal called Open Bitcoin blockchain oracle (RSKIP220) which will be i...

I am trying to create a set of public/private keys from a mnemonic based on BIP0039. I am working in Python. Here is the code I have so far: from mnemonic import Mnemonic mnemon = Mnemonic('engli...

Can someone please explain how I can send a bitcoin transaction using bitcoinjs??? I have setup two wallets using bitcoinjs. I want to send 100000 satoshis from here: 1G4iprWu7Q8tNbQLA8UBM2Gearcn...

I'm playing with Binance API to make my trading bot with Python 3.6. and CCXT library (here you find the docs ). One very useful thing they have in their site is the capability to place orders for...