Loopchain is a high-performance Blockchain Consensus & Network engine of ICON project.

In order to run a loopchain node, you need to install ICON Service that runs a smart contract and interacts with loopchain engine, and ICON RPC Server that processes HTTP requests from clients.

For details, refer to the guide below.

• Getting Started
  • Requirements
  • Installation
  • TearDown
• See Also...
  • Documentation
  • License

Loopchain development and execution requires following environments.

1. Python 3.6.5+ (recommended 3.7.x)

   We recommend to create an isolated Python 3 virtual environment with virtualenv.

   $ virtualenv -p python3 venv
   $ source venv/bin/activate

   NOTE: We will support 3.7.x only in the future. Please upgrade python version to 3.7.x

2. RabbitMQ 3.7+

   Loopchain requires RabbitMQ.

   For the reliable installation, please visit: Downloading and Installing RabbitMQ

3. Reward Calculator

   Reward calculator is a daemon which calculates I-Score of ICONists to support IISS.

   Please visit Reward calculator github repository to install it.

4. Other Dependencies

   • MacOS

     $ brew install automake pkg-config libtool leveldb openssl

   • Ubuntu

     $ sudo apt update
     $ sudo apt install -y make build-essential libssl-dev zlib1g-dev libbz2-dev \
       libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
       xz-utils tk-dev libffi-dev liblzma-dev automake libtool lsof

     NOTE: If you are using ubuntu 18.04, you need to install additional library libsecp256k1-dev

   • CentOS

     $ sudo yum update
     $ sudo yum install -y git zlib-devel bzip2 bzip2-devel readline-devel sqlite sqlite-devel openssl-devel \
       xz xz-devel libffi-devel gcc gcc-c++ automake libtool lsof

1. Check all requirements properly installed

   $ make requirements

   If you don't see any error logs and you have started rabbitmq server, you may move on to next step.

2. Proceed installation

   $ make all

   This command is for setting up:

   • packages: installs all necessary python packages via setup.py.
   • gRPC proto: generates python gRPC code from protocol buffer which is defined in loopchain.proto
   • keystore: generates a keystore file.

   NOTE: Password must be at least 8 characters long including alphabet, number, and special character. Please be careful not to forget the password since you will need it to run the Citizen Node.

3. Run Citizen

   • Run Citizen Node on ICON Testnet network
   • Run Citizen Node on ICON Mainnet network

1. follow this guide : install loopchain via snap

• Clear RabbitMQ processes & pycache & build

  $ make clean

• Delete log / delete DB

  $ make clean-log clean-db

NOTE: For more command options, $ make help

• Please visit ICON Developers Portal

• This project follows the Apache 2.0 License.