DIVA.EXCHANGE: Hyperledger/Iroha Blockchain

This is an open source project (AGPLv3 licensed) - transparently developed by the association DIVA.EXCHANGE.

All source code is available here: https://codeberg.org/diva.exchange/iroha/.

The blockchain backend of diva is based on Hyperledger/Iroha.

Important: these instructions are suitable for a testnet in a development environment (not production). This project contains well-known private keys (so they are not private anymore). To understand the cryptography related to Iroha, read the docs: https://iroha.readthedocs.io/en/master/

Get Started

DIVA.EXCHANGE offers preconfigured packages to start or join the DIVA.EXCHANGE Iroha testnet.

Preconfigured packages are available as diva-dockerized.

For advanced users on an operating system supporting Docker (Linux, Windows, MacOS) the following instructions will help to get started.

Using Docker Compose

IMPORTANT: To start a local Iroha testnet, make sure you have Docker Compose installed. Check your Docker Compose installation by executing docker-compose --version in a terminal.

Clone the code repository from the public repository:

git clone -b master https://codeberg.org/diva.exchange/iroha.git
cd iroha

Latest available release

If you have Docker Compose available, execute within your iroha folder:

sudo docker-compose up -d

By default this will use the configuration file /docker-compose.yml. Within this docker-compose configuration file a local iroha testnet gets defined. This also involves a network configuration. By default there are no ports explosed and the network is defined as "internal".

After start up five docker container will be running: a postgres container (postgres.diva.local), three iroha container (n1.diva.local, n2.diva.local and n3.diva.local) and an explorer container (explorer.diva.local).

Open your browser and visit the local blockchain explorer: http://172.29.101.3:3920.

The IP address of the explorer, "172.29.101.3", is defined within the docker compose configuration file, /docker-compose.yml. Set up your own local network configuration and use this configuration file as an example or starting point.

To stop the container using Docker Compose, execute:

sudo docker-compose down

To stop the container, including the removal of the related volumes (data of the containers gets removed, so the local blockchain gets deleted) using Docker Compose, execute:

sudo docker-compose down --volumes

Build your Own Genesis Block

Make sure, the code is available by cloning the code repository from the public repository:

git clone -b master https://codeberg.org/diva.exchange/iroha.git
cd iroha

Within the folder data-genesis you can configure your own Genesis Block. Execute

sudo ./bin/genesis.sh

to create your own Genesis Block. Take a close look at the script to understand how the private keys are handled!

After building the Genesis Block, run your container using Docker Compose

sudo docker-compose up -d

Environment variables

Within the compose file (docker-compose.yml) some environment variables are used. They might be adapted to local needs.

LOG_LEVEL

Set the iroha log level: trace, debug, info, warning, error, critical. Default: info.

IP_POSTGRES

IP address of related postgres container. Mandatory.

PORT_POSTGRES

Port of the related postgres container. Default: 5432.

NAME_DATABASE

Name of the iroha database to use. Defaults to "iroha".

BLOCKCHAIN_NETWORK

Name of the iroha blockchain network to run. Defaults to an empty string and gets therefore set automatically by the entrypoint script.

NAME_PEER

Name of the iroha peer and the private/public key. Defaults to an empty string and gets therefore set automatically by the entrypoint script.

IP_HTTP_PROXY

IP address of the container running an HTTP proxy. Use it together for an I2P network.

PORT_HTTP_PROXY

Port of the container running an HTTP proxy. Use it together for an I2P network.

NO_PROXY

Comma separated list of domains to exclude from proxied traffic.

Contact the Developers

On DIVA.EXCHANGE you'll find various options to get in touch with the team.

Talk to us via Telegram (English or German).

Donations

Your donation goes entirely to the project. Your donation makes the development of DIVA.EXCHANGE faster.

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Awesome, thank you!