NBitcoin | Comprehensive Bitcoin library for the .NET framework | Cryptocurrency library

by MetacoSA C# Version: v7.0.25 License: MIT

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | NBitcoin Summary

NBitcoin is a C# library typically used in Financial Services, Fintech, Blockchain, Cryptocurrency, Bitcoin applications. NBitcoin has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Please read our ebook to understand the capabilities. NBitcoin is inspired by Bitcoin Core code but provides a simpler object oriented API (e.g., new Key().PubKey.Address.ToString() to generate a key and get the associated address). It relies on the BouncyCastle cryptography library instead of OpenSSL, yet replicates OpenSSL bugs to guarantee compatibility. NBitcoin also ports the integrality of Bitcoin Core unit tests with their original data in order to validate the compatibility of the two implementations. NBitcoin is licensed under the MIT License and we encourage you to use it to explore, learn, debug, play, share and create software for Bitcoin and with other Metaco services.

Support

Quality

Security

License

Reuse

Support

NBitcoin has a medium active ecosystem.

It has 1766 star(s) with 835 fork(s). There are 169 watchers for this library.

It had no major release in the last 6 months.

There are 70 open issues and 435 have been closed. On average issues are closed in 42 days. There are 26 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of NBitcoin is v7.0.25

Quality

NBitcoin has 0 bugs and 0 code smells.

Security

NBitcoin has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

NBitcoin code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

NBitcoin is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

NBitcoin releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

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NBitcoin Key Features

No Key Features are available at this moment for NBitcoin.

NBitcoin Examples and Code Snippets

No Code Snippets are available at this moment for NBitcoin.

Community Discussions

Trending Discussions on NBitcoin

Generate Bitcoin public/private key from Guid C#

The .Net Core 5 project can't be run in Visual Studio 2019

Validating Purchases from an Exchange

Obsolete "Use GetAddress(ScriptPubKeyType.Legacy) instead"

QUESTION

Generate Bitcoin public/private key from Guid C#

Asked 2022-Feb-04 at 19:51

I have a randomly generated 128 bit guid (cryptographically secure). How can I use this as a seed to generate a public and private key for Bitcoin, using C#? By seed, I mean that every time I use the same guid as input, it should result in the same public/private keys.

I have looked at NBitcoin, but don't understand how to pull it off.

...

ANSWER

Answered 2021-Nov-13 at 14:54

You can directly create 32 random bytes to be your private key. Example below. But it is VERY important: these 32 bytes must be from cryptographically-secure pseudorandom generator. For example, if you use C# built-in Random class, anyone will be able to restore your private keys with regular computer. You need to be very careful if you plan to use this in real bitcoin network. I am not sure if Guid generation is cryptographically-secure.

Source https://stackoverflow.com/questions/69954526

QUESTION

The .Net Core 5 project can't be run in Visual Studio 2019

Asked 2021-Sep-24 at 19:30

I've got a .Net Core project from one of my colleague that has been managed by .Net SDK 5 and VS Code. But now I want to manage it in Visual Studio 2019, as it is easier to navigate codes and run/debug project. I could open the project folder, by choosing File/Open/Folder... and select the project folder in VS 2019. But when I try to run it by click run button in the tool bar as below, I get the alert box as below next. I clicked this run button to run project Build failed alert message

And here is the build output.

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ANSWER

Answered 2021-Sep-24 at 03:26

there could be two issues

missing SDK, you can check SDK version using

Source https://stackoverflow.com/questions/69308934

QUESTION

Validating Purchases from an Exchange

Asked 2021-Feb-13 at 16:59

I'm new to crypto but I'm attempting to implement a storefront to process bitcoin sending / receiving. In my first test I transferred some BTC from my coinbase account to my personally hosted wallet. The result was what appears to be a combined transaction with several unknown (for all intents and purposes anyway, they are coinbase's (temporary?) wallets) public keys that distribute out to the various output wallets, including the one I was using in my test.

So I received the bitcoin, but I cannot verify that it came from me as coinbase's system obfuscates that detail. The wallet / key they display on the website seems to only be for receiving crypto.

The only solution that has come to mind is to create a different wallet for every transaction in order to verify the amount received is as expected, and thus removes any nonsense with having to trust user input. Is this the standard methodology? Are there better ways to handle this? I figure the cost of then transferring from those small wallets would be a rather large loss.

For this project I'm using NBitcoin + Blockcypher in a .NET Framework environment.

Thank you for any insight or suggestions in advance. This has been an interesting field to dive into.

...

ANSWER

Answered 2021-Feb-13 at 16:59

Multiple inputs

Each transaction can have multiple inputs, which are the addresses you are seeing. A transaction with multiple inputs counts as a single transaction. So the miner's fee will be the same as a transaction with a single input.

A user spending the transaction will need to have the private key of each input, so it's safe to assume that all the inputs belong to the same user.

Outputs

A transaction can have 1 or 2 outputs. One for the receiving party, and one for any spare change back to the paying party.

Automatically validating a transaction

All automatic payment validation systems (that I know of), use "single-use addresses". That is, they create an address that is only used once. You can then link the address to a certain user, and check if the funds were received on that address without having to know anything about the input addresses.

Note that most wallets also generate a lot of addresses for users. So, keeping a record of users and their bitcoin addresses is generally not recommended.

As generating new bitcoin addresses is quite easy, I would suggest you set up a system that generates a new address for each incoming payment. If you share this address only with the paying party you know for certain it can only be them that made the payment.

Good luck!

Source https://stackoverflow.com/questions/66182138

QUESTION

Obsolete "Use GetAddress(ScriptPubKeyType.Legacy) instead"

Asked 2020-Jun-09 at 08:19

using System;
using NBitcoin;

namespace RSA
{
    public class RSA
    {
        public static Wallet KeyGenerate()
        {
            Key  privateKey = new Key();

            var v = privateKey.GetBitcoinSecret(Network.Main).GetAddress();
            var address = BitcoinAddress.Create(v.ToString(), Network.Main);

            return new Wallet { PublicKey = v.ToString(), PrivateKey = privateKey.GetBitcoinSecret(Network.Main).ToString() };
        }
    }
}

...

ANSWER

Answered 2020-Jun-09 at 08:19

As Progman says,you can use GetAddress(ScriptPublicKeyType.Legacy) to instead BitcoinSecret.getAddress().

Here is the usage of GetAddress(ScriptPublicKeyType.Legacy):

Source https://stackoverflow.com/questions/62227519

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install NBitcoin

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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