def load_keys():
if wallet.load_keys():
global blockchain
blockchain = Blockchain(wallet.public_key)
response = {
'public_key': wallet.public_key,
'private_key': wallet.private_key,
'funds': blockchain.get_balance()
}
return jsonify(response), 201
else:
response = {
'message': 'Loading keys failed'
}
return jsonify(response), 500
def listen_for_inputs(self):
waiting_for_input = True
while waiting_for_input:
print('1: transaction')
print('2: mine block')
print('3: history')
print('4: validity')
print('5: create wallet')
print('6: load wallet')
print('7: save wallet')
print('q: exit')
user_choice = self.get_user_choice()
if user_choice == '1':
tx_data = self.get_transaction_value()
recipient, amount = tx_data
signature = self.wallet.sign_transaction(
self.wallet.public_key, recipient, amount)
if self.blockchain.add_transaction(recipient, self.wallet.public_key, signature, amount=amount):
print("added transaction")
else:
print('transaction failed')
elif user_choice == '2':
if not self.blockchain.mine_block():
print("Mining failed")
elif user_choice == '3':
self.print_blockchain_history()
elif user_choice == '4':
if Verification.verify_transactions(self.blockchain.get_open_transactions(), self.blockchain.get_balance):
print('all true')
else:
print("invalid exist")
elif user_choice == '5':
self.wallet.create_keys()
self.blockchain = Blockchain(self.wallet.public_key)
elif user_choice == '6':
self.wallet.load_keys()
self.blockchain = Blockchain(self.wallet.public_key)
elif user_choice == '7':
self.wallet.save_keys()
elif user_choice == 'q':
waiting_for_input = False
else:
print("input invalid")
if not Verification.verify_chain(self.blockchain.get_chain()):
self.print_blockchain_history()
print("invalid blockchain")
break
def create_keys():
wallet.create_keys()
if wallet.save_keys():
global blockchain
blockchain = Blockchain(wallet.public_key)
response = {
'public_key': wallet.public_key,
'private_key': wallet.private_key
}
return jsonify(response), 201
else:
response = {
'message': 'Saving keys failed'
}
return jsonify(response), 500
def __init__(self):
self.wallet = Wallet()
self.wallet.create_keys()
self.blockchain = Blockchain(self.wallet.public_key)
class Node:
def __init__(self):
self.wallet = Wallet()
self.wallet.create_keys()
self.blockchain = Blockchain(self.wallet.public_key)
def get_transaction_value(self):
tx_recipient = input('Enter sender of txn:')
tx_amount = float(input('Enter txn amount'))
return (tx_recipient, tx_amount)
def get_user_choice(self):
user_input = input("User choice: ")
def print_blockchain_history(self):
for block in self.blockchain.get_chain:
print("Outputting Block")
print(block)
def listen_for_inputs(self):
waiting_for_input = True
while waiting_for_input:
print('1: transaction')
print('2: mine block')
print('3: history')
print('4: validity')
print('5: create wallet')
print('6: load wallet')
print('7: save wallet')
print('q: exit')
user_choice = self.get_user_choice()
if user_choice == '1':
tx_data = self.get_transaction_value()
recipient, amount = tx_data
signature = self.wallet.sign_transaction(
self.wallet.public_key, recipient, amount)
if self.blockchain.add_transaction(recipient, self.wallet.public_key, signature, amount=amount):
print("added transaction")
else:
print('transaction failed')
elif user_choice == '2':
if not self.blockchain.mine_block():
print("Mining failed")
elif user_choice == '3':
self.print_blockchain_history()
elif user_choice == '4':
if Verification.verify_transactions(self.blockchain.get_open_transactions(), self.blockchain.get_balance):
print('all true')
else:
print("invalid exist")
elif user_choice == '5':
self.wallet.create_keys()
self.blockchain = Blockchain(self.wallet.public_key)
elif user_choice == '6':
self.wallet.load_keys()
self.blockchain = Blockchain(self.wallet.public_key)
elif user_choice == '7':
self.wallet.save_keys()
elif user_choice == 'q':
waiting_for_input = False
else:
print("input invalid")
if not Verification.verify_chain(self.blockchain.get_chain()):
self.print_blockchain_history()
print("invalid blockchain")
break
from flask import Flask, jsonify, request
from uuid import uuid4
from bc import Blockchain
import json
# instantiate the app
app = Flask(__name__)
# generate a unique address for this node
node_address = str(uuid4()).replace('-','')
# instantiate the blockchain
blockchain = Blockchain()
# basic blockchain functionalities
# - mine a block
# - add new transactions
# - to view the whole blockchain
# API endpoint to mine new blocks
@app.route('/mine', methods=['GET'])
def mine():
# get the last block of the blockchain
last_block = blockchain.last_block
# get the proof of the last block
last_proof = last_block['proof']
current_proof = blockchain.proof_of_work(last_proof)
# Node recieves 1 amount of currency for mining one block
requests.post(url=validated_url,
data=json.dumps({'validated': 'True'}))
else:
requests.post(url=validated_url,
data=json.dumps({'validated': 'False'}))
last_transaction = current_transaction['id']
await asyncio.sleep(1)
sync()
asyncio.Task(listener())
client = discord.Client()
bc = Blockchain()
bc.add_advertiser('corpinc', 2000, "myad")
listener()
if (bc.blocks == []):
bc.root()
@client.event
async def on_message(message):
# we do not want the bot to reply to itself
if message.author == client.user:
return
if message.content.startswith('!AdBot give'):
content = message.content[11:]
status = bc.add_transaction('server', str(message.author),
}
return jsonify(response), 200
@app.route('/node', methods=["GET"])
def get_nodes():
nodes = blockchain.get_peer_nodes()
response = {
"all_nodes": nodes
}
return jsonify(response), 200
@app.route('/chain', methods=["GET"])
def get_chain():
chain_snapshot = blockchain.chain
dict_chain = [block.__dict__.copy() for block in chain_snapshot]
for dict_block in dict_chain:
dict_block['transactions'] = [
tx.__dict__ for tx in dict_block['transactions']]
return jsonify(dict_chain), 200
if __name__ == '__main__':
from argparse import ArgumentParser
parser = ArgumentParser()
parser.add_argument('-p', '--port', type=int, default = 5000)
args = parser.parse_args()
port = args.port
wallet = Wallet(port)
blockchain = Blockchain(wallet.public_key, port)
app.run(host="0.0.0.0", port=port)