.NET Ethereum client

Nethermind is a high-performance, highly configurable full Ethereum protocol client built on .NET that runs on Linux, Windows, and macOS, and supports Clique, Aura, Ethash, and Proof-of-Stake consensus algorithms. Nethermind offers very fast sync speeds and support for external plug-ins. Enjoy reliable access to rich on-chain data thanks to high-performance JSON-RPC based on the Kestrel web server. Healthy node monitoring is secured with a Grafana dashboard and Seq enterprise logging.

🗣️ Chats

📢 Social

Download and run

⛓️ Currently supported list of networks

`Network name`
Mainnet
Goerli
Rinkeby
Ropsten
Sepolia
xDai (Gnosis)
Poacore
Sokol
EnergyWeb
Volta
Kovan

Using PPA

(Tested on Ubuntu Series: Focal, Bionic, Xenial and Trusty)

sudo add-apt-repository ppa:nethermindeth/nethermind
sudo apt install nethermind
To execute the launcher nethermind
To execute the runner nethermind --config mainnet_pruned

Using Homebrew

brew tap nethermindeth/nethermind
brew install nethermind
To execute the launcher nethermind-launcher
To execute the runner nethermind --config mainnet_pruned

Build from Source

🚧 Prerequisites

Windows

Install .NET
You may need to install this.

Linux

Ubuntu

Install .NET
Install dependencies

sudo apt-get install libsnappy-dev libc6-dev libc6

# Link libraries (only for Ubuntu >= 21.04)
amd64 architecture: sudo ln -s /usr/lib/x86_64-linux-gnu/libdl.so.2 /usr/lib/x86_64-linux-gnu/libdl.so
arm64/aarch64 architecture: sudo ln -s /usr/lib/aarch64-linux-gnu/libdl.so.2 /usr/lib/aarch64-linux-gnu/libdl.so

# Extra dependency for arm64/aarch64
sudo apt-get install libgflags-dev

Tested on Ubuntu 21.04, 20.04 and 18.04 LTS and 21.10

Debian

Install .NET
Install dependencies

sudo apt-get install libsnappy-dev libc6-dev libc6

Tested on Debian 10 (9 not working)

CentOS

Install .NET
Install dependencies

sudo yum install -y glibc-devel bzip2-devel libzstd

# Link libraries
sudo ln -s `find /usr/lib64/ -type f -name "libbz2.so.1*"` /usr/lib64/libbz2.so.1.0 && \
sudo ln -s `find /usr/lib64/ -type f -name "libsnappy.so.1*"` /usr/lib64/libsnappy.so

Tested on CentOS 8

Fedora

Install .NET
Install dependencies

sudo yum install -y glibc-devel snappy libzstd

# Link libraries
sudo ln -s `find /usr/lib64/ -type f -name "libbz2.so.1*"` /usr/lib64/libbz2.so.1.0 && \
sudo ln -s `find /usr/lib64/ -type f -name "libsnappy.so.1*"` /usr/lib64/libsnappy.so
# also required for Fedora 35
sudo ln -s `find /usr/lib64/ -type f -name "libdl.so.2*"` /usr/lib64/libdl.so

Tested on Fedora 32

macOS

Install .NET
Install dependencies

brew install rocksdb gmp snappy lz4 zstd

Apple Silicon (M1) users only: create symlink for homebrew dependencies

sudo ln -s `find /opt/homebrew/Cellar/snappy -name "libsnappy.dylib"` /usr/local/lib/libsnappy.dylib

🏗️ Build and Run

git clone https://github.com/NethermindEth/nethermind --recursive
cd nethermind/src/Nethermind
dotnet build Nethermind.sln -c Release
cd Nethermind.Runner
dotnet run -c Release --no-build --config mainnet

🐳 Docker Image

Official Nethermind docker images are available on Docker Hub.

Get digest of docker image

In case of any docker image need to be updated in the repository, you can update the digest of this images with the next commands

docker inspect --format='{{index .RepoDigests 0}}' <image_name>

The output must show the image digest, and then you can copy that output in the FROM tag inside the Dockerfile

🧪 Test

If you want to run the Nethermind or Ethereum Foundation tests, then:

dotnet build Nethermind.sln -c Debug
dotnet test Nethermind.sln

dotnet build EthereumTests.sln -c Debug
dotnet test EthereumTests.sln

CryptoUnchained/nethermind