Create your Custom Blockchain in Django

Release 1.0

The goal of this project is to set up a simple blockchain stored in sqlitedb. Inspired by https://github.com/dvf/blockchain

Features

This release

• Mine transactions that haven't been assigned to a block yet and be rewarded with a coin. Simple Proof of Work Algorithm used: - Find a number p' such that hash(pp') contains leading 4 zeroes, where p is the previous p' - p is the previous proof, and p' is the new proof
• Create new transactions to be mined.
• Query full chain and transaction list.
• Register and resolve conflicts with other nodes in the network that hold a copy of same blockchain.

Next release

• Test Consensus algorithm by creating a conflicting blockchain on another node.

Endpoints

Method	Description	Endpoint	Query Sample
GET	Chain	/chain	n/a
POST	Mine	/mine	n/a
POST	Register transaction	/transactions/new	?sender=1&recipient=some-other-address&amount=1
POST	Register Node	/nodes/register	?node=http://192.168.0.5:5000
PATCH	Resolve Conflict between Nodes	/nodes/resolve	n/a
POST	Creates genesis block (new chain only)	/blocks/genesis	n/a

Running project locally

1. Clone repo to your development environment

git clone https://github.com/lauramayol/my_blockchain.git

2. Install virtualenv

pip install virtualenv

3. Change directory to project folder

cd blockchain_project

4. Start virtualenv

virtualenv --python=/usr/local/bin/python3 env

5. Run virtualenv

source env/bin/activate

6. Install dependencies using pip

pip3 install -r requirements.txt

7. Run development server

python blockchain_project/manage.py runserver

8. Check http://127.0.0.1:8000/chain on your browser.

Contribute

• Issue Tracker: https://github.com/lauramayol/my_blockchain/issues
• Source Code: https://github.com/lauramayol/my_blockchain

Support

If you are having issues, please let me know by posting on Issue Tracker.