Creating Blockchain with Python #3 - Genesis Block

Creating Blockchain with Python #3
Genesis Block

today we will learn how to create the first block, which we call Genesis Block

steps:
1. watch previous video
Creating Blockchain with Python #1 - Create a Chain with List
https://youtu.be/Q439JY8vRxA

Creating Blockchain with Python #2 - Adding New Transaction
https://youtu.be/EZVq7yDNZCY

2. download the code here
https://github.com/cryptocodecg/blockchain-cg/blob/master/blockchain-3.py

3. run the code and see how we initialize the genesis block

The genesis block is the first block in the blockchain. There are 4 metadatas in the block:
* Previous_hash: the hash of the previous block. empty string in the genesis block because the first block does not have any previous hash.
* Index: the index of the block in the blockchain. genesis block is the first block, its index is initialized to 0.
* Transaction: the transaction that is stored inside the blockchain. empty for the genesis block since there is no transaction yet.
* Nonce: a number only used once. for the first transaction we set a dummy value for the nonce 23.

we will add more codes gradually as we learn more things about blockchain :)

next tutorial will be about hashing :)

please click subscribe, like and share :) thanks for watching :) please leave some comments to let us know what you think or if you have some questions :)