#Block.py Timestamp- When the block is going to be created
(self.timestamp = timestamp)assigning as a constructor
self.get_hash() -- A fucntion here to create out own hash( a hash value)
SHA256- encryptic hash function of 32 byte
use hashlib library function which gives ebcryption and hashing functionality ( define variable)
genesis block means the first block of the chain
#Blockchain1.py
import the block class
%s means string value
%block_chain[-1] means last elements of the list