Blockchain Lab 5
Name: Abhinav ukey
Roll no: 192010004
Deploy block mining application over server . Also execute via mobile or other device(s)
Code:
#Deploy block mining application over server . Also execute via mobile or other device(s) also
import hashlib
import json
from flask import Flask
class blockchain:
def __init__(self):
self.chain = []
self.create_block(previous_hash = 0)
def create_block(self, previous_hash):
block = {
'index': len(self.chain) + 1,
'previous_hash' : previous_hash
}
self.chain.append(block)
return block
def hash(self, block):
encode_block = json.dumps(block).encode()
return hashlib.sha256(encode_block).hexdigest()
def get_previous_block(self):
return self.chain[-1]
app = Flask(__name__)
blk = blockchain()
@app.route('/main_block')
def mine_block():
previous_block = blk.get_previous_block()
previous_hash = blk.hash(previous_block)
block = blk.create_block(previous_hash)
response = {
'Message' : 'Your block is mined',
'index' : block['index'],
'previous_hash' : block['previous_hash']
}
return response
@app.route('/get_chain')
def get_chain():
response = {
'chain' : blk.chain,
'length' : len(blk.chain)
}
return response
app.run()
