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This article mainly explains "how to develop a Bitcoin wallet with C #". The explanation in the article is simple, clear and easy to learn and understand. let's study and learn "how to develop a Bitcoin wallet with C #".

1. Development objectives

The Bitcoin wallet we are going to develop will achieve the following functions:

You can use BIP39 mnemonics to recover the key

You can create bit addresses and receive bitcoins transferred from other addresses

You can check the Bitcoin address balance.

You can pay bitcoin to other addresses.

2. Introduce NBitcoin development package

First, you need to introduce the NBitcoin package and the QBitNinja package:

Using NBitcoin;using QBitNinja.Client;using QBitNinja.Client.Models;3, generate BIP39 mnemonic words

We need to save the generated mnemonics:

Public void MssGenerateMnemo (out string ssMnemo) {Mnemonic mnemonic = new Mnemonic (Wordlist.English, WordCount.Twelve); ssMnemo = mnemonic.ToString ();} 4, generate bitcoin address

The following code generates a bitcoin HD address using NBitcoin:

Public void MssGenerateAddress (string ssMnemo, int ssKeynumber, bool ssIsTestNet, out string ssAddress, out string ssPrivateKey) {Network net; if (ssIsTestNet) net = Network.TestNet; else net = Network.Main; Mnemonic restoreNnemo = new Mnemonic (ssMnemo); ExtKey masterKey = restoreNnemo.DeriveExtKey () KeyPath keypth = new KeyPath ("KeyPath keypth 44 pound /" + ssKeynumber); ExtKey key = masterKey.Derive (keypth); ssAddress = key.PrivateKey.PubKey.GetAddress (net). ToString (); ssPrivateKey = key.PrivateKey.GetBitcoinSecret (net). ToString ();} 5. Get the balance of Bitcoin address.

The following code gets the bitcoin balance at the specified address:

Public void MssGetBalance (string ssAddress, bool ssIsUnspentOnly, bool ssIsTestNet, out decimal ssBalance, out decimal ssConfirmedBalance) {Network net; if (ssIsTestNet) net = Network.TestNet; else net = Network.Main; QBitNinjaClient client = new QBitNinjaClient (net); var balance = client.GetBalance (new BitcoinPubKeyAddress (ssAddress), ssIsUnspentOnly) .result; ssBalance = 0.0m; ssConfirmedBalance = 0.0m If (balance.Operations.Count > 0) {var unspentCoins = new List (); var unspentCoinsConfirmed = new List (); foreach (var operation in balance.Operations) {unspentCoins.AddRange (operation.ReceivedCoins.Select (coin = > coin as Coin)); if (operation.Confirmations > 0) unspentCoinsConfirmed.AddRange (operation.ReceivedCoins.Select (coin = > coin as Coin);} ssBalance = unspentCoins.Sum (x = > x.Amount.ToDecimal (MoneyUnit.BTC)) SsConfirmedBalance = unspentCoinsConfirmed.Sum (x = > x.Amount.ToDecimal (MoneyUnit.BTC));}} 6. Transfer to other Bitcoin addresses

The following code can use the NBitcoin implementation to transfer bitcoin to a specified address:

Public void MssGetBalance (string ssAddress, bool ssIsUnspentOnly, bool ssIsTestNet, out decimal ssBalance, out decimal ssConfirmedBalance) {Network net; if (ssIsTestNet) net = Network.TestNet; else net = Network.Main; QBitNinjaClient client = new QBitNinjaClient (net); var balance = client.GetBalance (new BitcoinPubKeyAddress (ssAddress), ssIsUnspentOnly) .result; ssBalance = 0.0m; ssConfirmedBalance = 0.0m If (balance.Operations.Count > 0) {var unspentCoins = new List (); var unspentCoinsConfirmed = new List (); foreach (var operation in balance.Operations) {unspentCoins.AddRange (operation.ReceivedCoins.Select (coin = > coin as Coin)); if (operation.Confirmations > 0) unspentCoinsConfirmed.AddRange (operation.ReceivedCoins.Select (coin = > coin as Coin);} ssBalance = unspentCoins.Sum (x = > x.Amount.ToDecimal (MoneyUnit.BTC)) SsConfirmedBalance = unspentCoinsConfirmed.Sum (x = > x.Amount.ToDecimal (MoneyUnit.BTC));}} Thank you for your reading. The above is the content of "how to develop Bitcoin Wallet with C#". After the study of this article, I believe you have a deeper understanding of how to develop Bitcoin Wallet with C#, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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