
![BTCPay Server](BTCPayServer/wwwroot/img/btc_pay_BG_twitter.png)

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# BTCPay Server

## Introduction 

BTCPay Server is a free and open-source cryptocurrency payment processor which allows you to receive payments in Bitcoin and altcoins directly, with no fees, transaction cost or a middleman.

BTCPay is a non-custodial invoicing system which eliminates the involvement of a third-party. Payments with BTCPay go directly to your wallet, which increases the privacy and security. Your private keys are never uploaded to the server. There is no address re-use, since each invoice generates a new address deriving from your xpubkey.

The software is built in C# and conforms to the invoice [API of BitPay](https://bitpay.com/api). It allows for your website to be easily migrated from BitPay and configured as a self-hosted payment processor.

You can run BTCPay as a self-hosted solution on your own server, or use a [third-party host](https://github.com/btcpayserver/btcpayserver-doc/blob/master/ThirdPartyHosting.md).

The self-hosted solution allows you not only to attach an unlimited number of stores and use the Lightning Network but also become the payment processor for others.

Thanks to the [apps](https://github.com/btcpayserver/btcpayserver-doc/blob/master/Apps.md) built on top of it, you can use BTCPay to receive donations, start a crowdfunding campaign or have an in-store Point of Sale.

[![What is BTCPay](https://img.youtube.com/vi/q7xJMno_B3U/sddefault.jpg)](https://www.youtube.com/watch?v=q7xJMno_B3U "What is BTCPay")

## Table of Contents

* [Features](#features)
* [Getting Started](#getting-started)
* [Documentation](#documentation)
* [Contributing](#Contributing)
* [How to build](#how-to-build)
* [How to run](#how-to-run)
* [How to debug](#how-to-debug)
* [Dependencies](#dependencies)

## Features

* Direct, peer-to-peer Bitcoin and altcoin payments
* No transaction fees (other than those for the crypto networks)
* No processing fees
* No middleman
* No KYC
* User has complete control over private keys
* Enhanced privacy
* Enhanced security
* Self-hosted
* SegWit support
* Lightning Network support (LND and c-lightning)
* Tor support
* Full compatibility with BitPay API (easy migration)
* Process payments for others
* Easy-embeddable Payment buttons
* Point of sale app
* Crowdfunding app
* Payment requests
* Internal Web Wallet

## Getting Started

Firstly, decide if you want to host an instance yourself or use a [third-party host](https://docs.btcpayserver.org/deployment/thirdpartyhosting). If you've chosen to self-host, we documented plenty [ways to deploy BTCPay Server](https://docs.btcpayserver.org/deployment/deployment). 

After successful deployment, make sure to check our [getting started](https://docs.btcpayserver.org/btcpay-basics/gettingstarted) and [walkthrough](https://docs.btcpayserver.org/btcpay-basics/walkthrough) guides. In case you would like to use Lightning Network, see [Lightning guide](https://docs.btcpayserver.org/features/lightningnetwork).

## Documentation

Please check out our [official website](https://btcpayserver.org/), our [complete documentation](https://github.com/btcpayserver/btcpayserver-doc) and [FAQ](https://github.com/btcpayserver/btcpayserver-doc/tree/master/FAQ#btcpay-frequently-asked-questions-and-common-issues) for more details. 

If you have trouble using BTCPay, consider joining [communities listed on official website](https://btcpayserver.org/#communityCTA) to get help from BTCPay community members. Only file [Github issue](https://github.com/btcpayserver/btcpayserver/issues) for technical issues you can't resolve through other channels or feature requests you've validated with other members of community.

Main community chat is located on [Mattermost](https://chat.btcpayserver.org/).

## Contributing
BTCPay is built and maintained entirely by volunteer contributors around the internet. We welcome and appreciate new contributions.

If you're a developer looking to help, but you're not sure where to begin, check the [good first issue label](https://github.com/btcpayserver/btcpayserver/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22), which contains small pieces of work that have been specifically flagged as being friendly to new contributors.

Contributors looking to do something a bit more challenging, before opening a pull request, please [create an issue](https://github.com/btcpayserver/btcpayserver/issues/new/choose) or join [our community chat](https://chat.btcpayserver.org/) to get early feedback, discuss best ways to tackle the problem and to ensure there is no work duplication.

- [Setting up development environment on Windows](https://www.youtube.com/watch?v=ZePbMPSIvHM)
- [Setting up development environment Linux (Ubuntu)](https://www.youtube.com/watch?v=j486T_Rk-yw&t)

You also have an awesome video of our contributors which explains how to get started.[![Rockstar Dev and Britt Kelly - Btc Pay Server Code Along](https://img.youtube.com/vi/ZePbMPSIvHM/sddefault.jpg)](https://www.youtube.com/embed/VNMnd-dX9Q8)

## How to build

While the documentation advises to use docker-compose, you may want to build BTCPay yourself.

First install .NET Core SDK v2.1.9 as specified by [Microsoft website](https://www.microsoft.com/net/download/dotnet-core/2.1).

On Powershell:
```
.\build.ps1
```

On linux:
```
./build.sh
```

## How to run

Use the `run` scripts to run BTCPayServer, this example shows how to print the available command line arguments of BTCPayServer.

On Powershell:
```
.\run.ps1 --help
```

On linux:
```
./run.sh --help
```

## How to debug

If you want to debug, use Visual Studio Code or Visual Studio 2017.

You need to run the development time docker-compose as described [in the test guide](BTCPayServer.Tests/README.md).

You can then run the debugger by using the Launch Profile `Docker-Regtest` on either Visual Studio Code or Visual Studio 2017.

If you need to debug ledger wallet interaction, install the development time certificate with:

```bash
# Install development time certificate in the trust store
dotnet dev-certs https --trust
```

Then use the `Docker-Regtest-https` debug profile.

## Other dependencies

For more information, see the documentation: [How to deploy a BTCPay server instance](https://github.com/btcpayserver/btcpayserver-doc/#deployment).

## Supported altcoins

Bitcoin is the only focus of the project and its core developers. However, opt in integrations are present for several altcoins:

* Bitcore (BTX)
* Dash (DASH)
* Dogecoin (DOGE)
* Feathercoin (FTC)
* Groestlcoin (GRS)
* Litecoin (LTC)
* Monacoin (MONA)
* Polis (POLIS)
* Viacoin (VIA)
* BGold (BTG) (also known as Bitcoin Gold)
* BPlus (XBC) (also known as Bitcoin Plus)

Altcoins are maintained by their respective communities.
