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import os
import json
import hashlib
import datetime
from huggingface_hub import (upload_file,HfApi)
token_self = os.environ['HF_TOKEN']
api = HfApi(token=token_self)
chain_d="chain1.json"
chain_t="trans1.json"
class Blockchain:
def __init__(self,chain_load,load=None,create=None):
global main_chain
main_chain=chain_load
self.pending_transactions = []
self.trans_data_out = []
if load == None or load=="":
self.chain = []
self.create_block(proof=1, previous_hash='0',chain_n=create)
elif load != None and load !="":
#r = requests.get(load)
lod = json.loads(load)
self.chain = lod
def reset(self,create=None):
self.chain = []
self.pending_transactions = []
self.create_block(proof=1, previous_hash='0',chain_n=create)
def create_block(self, proof, previous_hash,chain_r=None,chain_n=None):
if chain_r=="" or chain_r==None:
chain_r=f"{main_chain.split('datasets/',1)[1].split('/raw',1)[0]}"
if chain_n !="" and chain_n !=None:
chain_n = f"{main_chain.split('main/',1)[1]}{chain_n}"
if chain_n=="" or chain_n==None:
chain_n=f"{main_chain.split('main/',1)[1]}{chain_d}"
block = {'index': len(self.chain) + 1,
'timestamp': str(datetime.datetime.now()),
'transactions': self.pending_transactions,
'proof': proof,
'previous_hash': previous_hash}
if self.block_valid(block) == True:
self.trans_data_out =[]
self.pending_transactions = []
self.chain.append(block)
json_object = json.dumps(self.chain, indent=4)
with open("tmp.json", "w") as outfile:
outfile.write(json_object)
outfile.close()
try:
api.upload_file(
path_or_fileobj="tmp.json",
path_in_repo=chain_n,
repo_id=chain_r,
token=token_self,
repo_type="dataset",
)
os.remove("tmp.json")
#MyChainTrans.reset(self,create=chain_n)
except Exception as e:
print(e)
pass
return block
else:
block = {"Not Valid"}
print("not Valid")
return block
def print_previous_block(self):
return self.chain[-1]
def new_transaction(self, block):
print (f'block::{block}')
trans_data = {
'name': block[0]['name'],
'recipient': block[0]['recipient'],
'amount': block[0]['amount'],
'balance': block[0]['balance'],
'index': block[0]['index'],
'timestamp': block[0]['timestamp'],
'proof': block[0]['proof'],
'previous_hash': block[0]['previous_hash']
}
self.trans_data_out.append(trans_data)
self.pending_transactions.append(block)
def proof_of_work(self, previous_proof):
new_proof = 1
check_proof = False
while check_proof is False:
hash_operation = hashlib.sha256(
str(new_proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] == '00000':
check_proof = True
else:
new_proof += 1
return new_proof
def hash(self, block):
encoded_block = json.dumps(block, sort_keys=True).encode()
return hashlib.sha256(encoded_block).hexdigest()
def block_valid(self, block):
print (block)
#prev_block=len(self.chain)
if len(self.chain) > 0:
prev_block = len(self.chain)-1
previous_block = self.chain[prev_block]
print (previous_block)
out=True
ind=None
mes=None
if block['previous_hash'] != self.hash(previous_block):
out=False
#ind=block_index
mes='Hash'
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
#ind=block_index+1
mes='Proof'
previous_block = block
else:
out = True
return out
def chain_valid(self, chain):
previous_block = chain[0]
block_index = 1
out=True
ind=None
mes=None
while block_index < len(chain):
block = chain[block_index]
if block['previous_hash'] != self.hash(previous_block):
out=False
ind=block_index
mes='Hash'
break
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
ind=block_index+1
mes='Proof'
break
previous_block = block
block_index += 1
return out, ind, mes
class MyChainSend:
def __init__(self,chain_load,load=None,create=None):
global main_chain_send
main_chain_send=chain_load
self.pending_transactions = []
if load == None or load=="":
self.chain = []
self.create_block(balance=0,proof=1, previous_hash='0',chain_n=create)
elif load != None and load !="":
#r = requests.get(load)
lod = json.loads(load)
self.chain = lod
def reset(self,create=None):
self.chain = []
self.pending_transactions = []
self.create_block(proof=1, previous_hash='0',chain_n=create)
def create_block(self, balance, proof, previous_hash,prev_block=None,chain_r=None,chain_n=None):
if chain_r=="" or chain_r==None:
chain_r=f"{main_chain_send.split('datasets/',1)[1].split('/raw',1)[0]}"
if chain_n !="" and chain_n !=None:
chain_n = f"{main_chain_send.split('main/',1)[1]}{chain_n}.json"
if chain_n=="" or chain_n==None:
chain_n="error_send.json"
#prev_block = len(blockchain.chain)-1
#previous_block = blockchain.chain[prev_block]
block = {'index': len(self.chain) + 1,
'timestamp': str(datetime.datetime.now()),
'block': prev_block,
'transactions': self.pending_transactions,
'balance': balance,
'proof': proof,
'previous_hash': previous_hash}
if self.block_valid(block) == True:
self.pending_transactions = []
self.chain.append(block)
json_object = json.dumps(self.chain, indent=4)
with open("tmp_send.json", "w") as outfile:
outfile.write(json_object)
outfile.close()
try:
api.upload_file(
path_or_fileobj="tmp_send.json",
path_in_repo=chain_n,
repo_id=chain_r,
token=token_self,
repo_type="dataset",
)
os.remove("tmp_send.json")
except Exception as e:
print(e)
pass
return block
else:
block = {"Not Valid"}
print("not Valid")
return block
def print_previous_block(self):
return self.chain[-1]
def new_transaction(self, sender, recipient, amount, balance):
transaction = {
'sender': sender,
'recipient': recipient,
'amount': amount,
'balance': balance
}
self.pending_transactions.append(transaction)
def proof_of_work(self, previous_proof):
new_proof = 1
check_proof = False
while check_proof is False:
hash_operation = hashlib.sha256(
str(new_proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] == '00000':
check_proof = True
else:
new_proof += 1
return new_proof
def hash(self, block):
encoded_block = json.dumps(block, sort_keys=True).encode()
return hashlib.sha256(encoded_block).hexdigest()
def block_valid(self, block):
#print (block)
#prev_block=len(self.chain)
if len(self.chain) > 0:
prev_block = len(self.chain)-1
previous_block = self.chain[prev_block]
#print (previous_block)
out=True
ind=None
mes=None
if block['previous_hash'] != self.hash(previous_block):
out=False
#ind=block_index
mes='Hash'
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
#ind=block_index+1
mes='Proof'
previous_block = block
else:
out = True
return out
def chain_valid(self, chain):
previous_block = chain[0]
block_index = 1
out=True
ind=None
mes=None
while block_index < len(chain):
block = chain[block_index]
if block['previous_hash'] != self.hash(previous_block):
out=False
ind=block_index
mes='Hash'
break
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
ind=block_index+1
mes='Proof'
break
previous_block = block
block_index += 1
return out, ind, mes
def deep_valid_send(self, chain1,chain2):
block_index = 1
out=True
ind=None
mes=None
while block_index < len(chain1):
block = chain1[block_index]
block_ind = block['block']
block2 = chain2[block_ind]
check1 = {
'timestamp':block['timestamp'],
'recipient':block['transactions']['recipient'],
'amount':block['transactions']['amount'],
'balance':block['transactions']['balance'],
'balance2':block['balance'],
'proof':block['proof'],
'previous_hash':block['previous_hash']
}
zz=1
while zz < len(block2[transactions]):
check2 = {
'timestamp':block2['timestamp'],
'sender':block2['transactions'][zz][0]['name'],
'recipient':block2['transactions'][zz][0]['recipient'],
'amount':block2['transactions'][zz][0]['amount'],
'balance':block2['transactions'][zz][0]['balance'],
'balance2':block2['transactions'][zz][0]['balance'],
'proof':block2['proof'],
'previous_hash':block2['previous_hash']
}
zz+=1
if self.hash(check1) != self.hash(check2):
out=False
ind=block_index
mes='Hash'
break
if out == False:
break
block_index += 1
return out, ind, mes
class MyChainRec:
def __init__(self,chain_load, load=None,create=None):
global main_chain_rec
main_chain_rec=chain_load
self.pending_transactions = []
if load == None or load=="":
self.chain = []
self.create_block(balance=0, proof=1, previous_hash='0',chain_n=create)
if load != None and load !="":
#r = requests.get(load)
lod = json.loads(load)
self.chain = lod
def reset(self,create=None):
self.chain = []
self.pending_transactions = []
self.create_block(proof=1, previous_hash='0',chain_n=create)
def create_block(self, balance, proof, previous_hash, prev_block=None,chain_r=None,chain_n=None):
if chain_r=="" or chain_r==None:
chain_r=f"{main_chain_rec.split('datasets/',1)[1].split('/raw',1)[0]}"
if chain_n !="" and chain_n !=None:
chain_n = f"{main_chain_rec.split('main/',1)[1]}{chain_n}.json"
if chain_n=="" or chain_n==None:
chain_n="error_rec.json"
#prev_block = len(blockchain.chain)-1
#previous_block = blockchain.chain[prev_block]
block = {'index': len(self.chain) + 1,
'timestamp': str(datetime.datetime.now()),
'block': prev_block,
'transactions': self.pending_transactions,
'balance': balance,
'proof': proof,
'previous_hash': previous_hash}
if self.block_valid(block) == True:
self.pending_transactions = []
self.chain.append(block)
json_object = json.dumps(self.chain, indent=4)
with open("tmp_rec.json", "w") as outfile:
outfile.write(json_object)
outfile.close()
try:
api.upload_file(
path_or_fileobj="tmp_rec.json",
path_in_repo=chain_n,
repo_id=chain_r,
token=token_self,
repo_type="dataset",
)
os.remove("tmp_rec.json")
except Exception as e:
print(e)
pass
return block
else:
block = {"Not Valid"}
print("not Valid")
return block
def print_previous_block(self):
return self.chain[-1]
def new_transaction(self, sender, recipient, amount, balance):
transaction = {
'sender': sender,
'recipient': recipient,
'amount': amount,
'balance': balance
}
self.pending_transactions.append(transaction)
def proof_of_work(self, previous_proof):
new_proof = 1
check_proof = False
while check_proof is False:
hash_operation = hashlib.sha256(
str(new_proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] == '00000':
check_proof = True
else:
new_proof += 1
return new_proof
def hash(self, block):
encoded_block = json.dumps(block, sort_keys=True).encode()
return hashlib.sha256(encoded_block).hexdigest()
def block_valid(self, block):
print (block)
#prev_block=len(self.chain)
if len(self.chain) > 0:
prev_block = len(self.chain)-1
previous_block = self.chain[prev_block]
print (previous_block)
out=True
ind=None
mes=None
if block['previous_hash'] != self.hash(previous_block):
out=False
#ind=block_index
mes='Hash'
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
#ind=block_index+1
mes='Proof'
previous_block = block
else:
out = True
return out
def chain_valid(self, chain):
previous_block = chain[0]
block_index = 1
out=True
ind=None
mes=None
while block_index < len(chain):
block = chain[block_index]
if block['previous_hash'] != self.hash(previous_block):
out=False
ind=block_index
mes='Hash'
break
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
ind=block_index+1
mes='Proof'
break
previous_block = block
block_index += 1
return out, ind, mes
class MyChainTrans:
def __init__(self,chain_load,load=None,create=None):
global main_chain_trans
main_chain_trans=chain_load
self.pending_transactions = []
if load == None or load=="":
self.chain = []
self.create_block(balance=0,proof=1, previous_hash='0',chain_n=create)
elif load != None and load !="":
#r = requests.get(load)
lod = json.loads(load)
self.chain = lod
def reset(self,create=None):
self.chain = []
self.pending_transactions = []
self.create_block(balance=0, proof=1, previous_hash='0',chain_n=create)
def create_block(self,balance, proof, previous_hash,prev_block=None,chain_r=None,chain_n=None):
if chain_r=="" or chain_r==None:
chain_r=f"{main_chain_trans.split('datasets/',1)[1].split('/raw',1)[0]}"
if chain_n !="" and chain_n !=None:
chain_n = f"{main_chain_trans.split('main/',1)[1]}{chain_t}"
if chain_n=="" or chain_n==None:
chain_n="error_send.json"
#prev_block = len(blockchain.chain)-1
#previous_block = blockchain.chain[prev_block]
block = {'index': len(self.chain) + 1,
'timestamp': str(datetime.datetime.now()),
#'block': len(Blockchain.chain)+1,
'transactions': self.pending_transactions,
'balance': balance,
'proof': proof,
'previous_hash': previous_hash}
if self.block_valid(block) == True:
self.pending_transactions = []
self.chain.append(block)
json_object = json.dumps(self.chain, indent=4)
with open("tmp_trans.json", "w") as outfile:
outfile.write(json_object)
outfile.close()
try:
api.upload_file(
path_or_fileobj="tmp_trans.json",
path_in_repo=chain_n,
repo_id=chain_r,
token=token_self,
repo_type="dataset",
)
os.remove("tmp_trans.json")
except Exception as e:
print(e)
pass
return block
else:
block = {"Not Valid"}
print("not Valid")
return block
def print_previous_block(self):
return self.chain[-1]
def new_transaction(self, sender, recipient, amount, balance):
transaction = {
'sender': sender,
'recipient': recipient,
'amount': amount,
'balance': balance
}
self.pending_transactions.append(transaction)
def proof_of_work(self, previous_proof):
new_proof = 1
check_proof = False
while check_proof is False:
hash_operation = hashlib.sha256(
str(new_proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] == '00000':
check_proof = True
else:
new_proof += 1
return new_proof
def hash(self, block):
encoded_block = json.dumps(block, sort_keys=True).encode()
return hashlib.sha256(encoded_block).hexdigest()
def block_valid(self, block):
#print (block)
#prev_block=len(self.chain)
if len(self.chain) > 0:
prev_block = len(self.chain)-1
previous_block = self.chain[prev_block]
#print (previous_block)
out=True
ind=None
mes=None
if block['previous_hash'] != self.hash(previous_block):
out=False
#ind=block_index
mes='Hash'
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
#ind=block_index+1
mes='Proof'
previous_block = block
else:
out = True
return out
def chain_valid(self, chain):
previous_block = chain[0]
block_index = 1
out=True
ind=None
mes=None
while block_index < len(chain):
block = chain[block_index]
if block['previous_hash'] != self.hash(previous_block):
out=False
ind=block_index
mes='Hash'
break
previous_proof = previous_block['proof']
proof = block['proof']
hash_operation = hashlib.sha256(
str(proof**2 - previous_proof**2).encode()).hexdigest()
if hash_operation[:5] != '00000':
out=False
ind=block_index+1
mes='Proof'
break
previous_block = block
block_index += 1
return out, ind, mes |