Description

This is an example implementation of blockchain platform. The data structure is a simplified version of the structure used on the Ethereum platform.

The data is stored in memory.

New blocks are always added after at least 4 pending transactions have been added.

In this example, the Proof of Work consensus method is implemented, which is based on the set difficulty of a cryptographic puzzle. The difficulty can be modified and we can observe how it affects performance. To verify this, run the available unit tests.

Install nodejs packages

npm install

Run tests

npm test

Change the difficulty of generating new blocks

• Open blockchain.js file
• Go to Blockchain constructor
• Change number in line this.difficulty = 2;
• Re-run tests