Install ParadigmCore

Follow this guide to download, configure, build, and run a full or validating OrderStream node.

If you want more detailed and complete instructions, follow this tutorial to set up a ParadigmCore instance, and join the current OrderStream test-network.

Setup Runtime

ParadigmCore uses the bigint primitive, a stage-three proposal slated for inclusion in the next ECMAScript specification. The spec has been integrated into mainline v8, and Node.JS since v10.4.

This means that ParadigmCore requires node.js v10.4 or greater.

TypeScript support for the bigint primitive was released with tsc v3.2.2, and the correct compiler version is specified in ParadigmCore's package file, so you won't need to update your global version (if present).

Clone ParadigmCore

Clone the repository into a clean working directory via HTTP:

git clone

or via SSH:

git clone [email protected]:ParadigmFoundation/ParadigmCore

Setup Environment

Don't execute npm i until you've read the next steps and configured your environment. If you do, it will fail.

ParadigmCore is configured through it's runtime environment variables, which can be configured through a .env file places in the repositories root directory. To get started, you can copy a partially-filled template file included with the repo. To do so, execute the following in the ParadigmCore root (/paradigmcore/):

$ cp lib/template.env .env

A blank template is also included at ./lib/raw_template.env for more granular control and custom configuration.

The template.env is nearly-complete with some sensible defaults, but you must set the following two variables before trying to configure and run ParadigmCore:

# set to 'full' to configure a non-validating node

# set to 'production' if you are running in a network with >1 node

# you can use infura if you must, but a WS provider is required

A local Ethereum node is recommended, but for development purposes the WebSocket endpoint provided by Infura will suffice.

If you use the STAKE_CONTRACT_ADDR set in the template, you must use a Ropsten provider. The Paradigm Protocol is not yet deployed on the main Ethereum network.

Join the OrderStream Test Network

Note: more detailed instructions for joining a network, as well as hardware requirements for validators can be found here. Other information required to join the "blind-star" test-network can be found in its repository.

If you intend to join an existing network as a full or validating node, you must also specify the following variable in your .env file:

SEEDS="" # with format "{NODE_ID}@{NODE_HOST}:26656[, ...]"

When joining an existing network (as a full or validating node), you will also need to obtain the genesis.json file that network was initialized with. Replace the auto-generated genesis file with the correct one for you network in ./lib/tendermint/config/genesis.json.

You can skip this step, and leave SEEDS blank for development (single node) environments.

Install Dependencies and Configure

ParadigmCore currently has a number of non-NPM dependencies, in addition to the deps specified in package.json, including tendermint and the Tendermint JavaScript driver that implements the ABCI server.

Conveniently, all dependencies, configuration, and validation can be run with a single:

$ npm i # or yarn install

This will trigger a number of steps, including the execution of init.js which downloads the correct tendermint binary, configures it's directories, generates node keys and network genesis files, and copies some required fields (including keys) to the environment file.

It also performs validation of the environment file and (tries) to provide helpful messages in the case of incomplete or incorrect configuration. You can run this script as many times as necessary – if validation fails the first time – after making changes to the .env file by running npm i again.

Build and Run

This version is implemented in TypeScript, and all source files must be compiled with tsc before running to populate the executable JS files. By default, they will be placed in ./dist.

Build from Source

Modify tsconfig.json to set the correct target and options for your environment, then run:

$ npm run build # to use tsconfig.json, or tsc [...args] for custom build

If you wish to build and run from one command, use:

$ npm run launch


After configuring and validating your environment, start ParadigmCore with:

$ npm run start

Common Issues

ParadigmCore has a number of NPM dependencies which in turn depend on certain C++ compiler tool-chains and other common build tools. If not already installed on your machine, all necessary tools can be installed with (for Debain-base linux):

$ sudo apt-get update
$ sudo apt-get install build-essential

Other Systems/Distributions

If you are using a Linux distribution that uses a different package manager, refer to instructions specific to your distro.

If you are using macOS, you will simply need to install XCode command line tools. The required packages are usually packaged with XCode, but can also be installed separately.

If you are on Windows, you can try this NPM module, but chances are you already have them if you've done other types of development in the past.