Simple Blockchain Java Reference Implementation

This repo contains an example of a blockchain without a specific vendor written in Java.

This is a companion project to accompany the 2018 Keyhole Software White Paper, Blockchain for the Enterprise. There is a similar example companion project written in C#.

Installation and running

1. Clone Repo

2. Import into IDE as Maven project and/or execute JUnit tests. JDK 1.8+ required.

JUnit Tests

`helpers.HashTest.java` - Calculate a SHA256 hash string from message

`nonce.NonceTest.java` - Mine a Hash using a Nonce Key

`simple.chain.SimpleChainTest.java` - Create a block chain and add and order blocks

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