Blockchain example

This is a Rust implementation of a simple blockchain example based on Daniel van Flymen's blog post Learn Blockchains by Building One.

The example was written purely out of curiosity and for educational purposes. We advice not to run this in a production setup.

Prerequisite

• rust (tested with 1.36.0)

Running

Start the server locally on port 5000:

cargo run

More nodes can be started on separate ports with:

cargo run -- --p 5001

Usage

If you have jq installed on your machine, the output can be turned into a more human-readable format by appending | jq '.' at the end of the commands.

Mine a new block:

curl http://localhost:5000/mine

Creating a new transaction:

curl -H "Content-Type: application/json" --request POST --data '{"sender":"e79fcabd1d70433191701d17c4d13112", "recipient":"some-other-address", "amount":5}' http://localhost:5000/transactions/new

View the full chain:

curl http://localhost:5000/chain

Add a new node:

curl -H "Content-Type: application/json" --request POST --data '{"nodes":["http://localhost:5001"]}' http://localhost:5000/nodes/register

Reaching consensus with other registered nodes in the network:

curl http://localhost:5000/nodes/resolve

TODO

• add tests
• change nodes/resolve endpoint from .to -> .to_async
• enable CI

Contribution

Contributions are welcome, feel free to submit a pull request.