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README.md

Cryptocurrency demo

This project demonstrates how to bootstrap own cryptocurrency with Exonum blockchain.

Cryptocurrency demo

Exonum blockchain keeps balances of users and handles secure transactions between them.

It implements most basic operations:

  • Create a new user
  • Add funds to the user's balance
  • Transfer funds between users

Install and run

Using docker

Simply run the following command to start the cryptocurrency service on 4 nodes on the local machine:

docker run -p 8000-8008:8000-8008 serhiioryshych/exonum-cryptocurrency-advanced-example

Ready! Find demo at http://127.0.0.1:8008.

Docker will automatically pull image from the repository and run 4 nodes with public endpoints at 127.0.0.1:8000, ..., 127.0.0.1:8003 and private ones at 127.0.0.1:8004, ..., 127.0.0.1:8007.

To stop docker container, use docker stop <container id> command.

Manually

Getting started

Be sure you installed necessary packages:

Install and run

Below you will find a step-by-step guide to starting the cryptocurrency service on 4 nodes on the local machine.

Build the project:

cd examples/cryptocurrency-advanced/backend

cargo install

Generate template:

mkdir example

exonum-cryptocurrency-advanced generate-template example/common.toml --validators-count 4

Generate public and secrets keys for each node:

exonum-cryptocurrency-advanced generate-config example/common.toml  example/pub_1.toml example/sec_1.toml --peer-address 127.0.0.1:6331

exonum-cryptocurrency-advanced generate-config example/common.toml  example/pub_2.toml example/sec_2.toml --peer-address 127.0.0.1:6332

exonum-cryptocurrency-advanced generate-config example/common.toml  example/pub_3.toml example/sec_3.toml --peer-address 127.0.0.1:6333

exonum-cryptocurrency-advanced generate-config example/common.toml  example/pub_4.toml example/sec_4.toml --peer-address 127.0.0.1:6334

Finalize configs:

exonum-cryptocurrency-advanced finalize --public-api-address 0.0.0.0:8200 --private-api-address 0.0.0.0:8091 example/sec_1.toml example/node_1_cfg.toml --public-configs example/pub_1.toml example/pub_2.toml example/pub_3.toml example/pub_4.toml

exonum-cryptocurrency-advanced finalize --public-api-address 0.0.0.0:8201 --private-api-address 0.0.0.0:8092 example/sec_2.toml example/node_2_cfg.toml --public-configs example/pub_1.toml example/pub_2.toml example/pub_3.toml example/pub_4.toml

exonum-cryptocurrency-advanced finalize --public-api-address 0.0.0.0:8202 --private-api-address 0.0.0.0:8093 example/sec_3.toml example/node_3_cfg.toml --public-configs example/pub_1.toml example/pub_2.toml example/pub_3.toml example/pub_4.toml

exonum-cryptocurrency-advanced finalize --public-api-address 0.0.0.0:8203 --private-api-address 0.0.0.0:8094 example/sec_4.toml example/node_4_cfg.toml --public-configs example/pub_1.toml example/pub_2.toml example/pub_3.toml example/pub_4.toml

Run nodes:

exonum-cryptocurrency-advanced run --node-config example/node_1_cfg.toml --db-path example/db1 --public-api-address 0.0.0.0:8200

exonum-cryptocurrency-advanced run --node-config example/node_2_cfg.toml --db-path example/db2 --public-api-address 0.0.0.0:8201

exonum-cryptocurrency-advanced run --node-config example/node_3_cfg.toml --db-path example/db3 --public-api-address 0.0.0.0:8202

exonum-cryptocurrency-advanced run --node-config example/node_4_cfg.toml --db-path example/db4 --public-api-address 0.0.0.0:8203

Install frontend dependencies:

cd ../frontend

npm install

Build sources:

npm run build

Run the application:

npm start -- --port=8280 --api-root=http://127.0.0.1:8200

--port is a port for Node.JS app.

--api-root is a root URL of public API address of one of nodes.

Ready! Find demo at http://127.0.0.1:8280.

Tutorials

  • Read the frontend tutorial to get detailed information about the interaction of the client with Exonum blockchain.

License

Cryptocurrency demo is licensed under the Apache License (Version 2.0). See LICENSE for details.