def add_block(self, proof):
prev_block = self._blocks[-1]
block = Block() # New block
block.prev_hash = prev_block.get_hash()
block.blockNo = prev_block.blockNo + 1
block.proof = proof
if self._valid_proof(prev_block.get_proof(), prev_block.get_hash(),
proof):
block._transactions = copy.deepcopy(self._transactions)
self._blocks.append(block)
return block
return None
def chain_from_json(self, chain_data):
builded_chain = []
for bd in chain_data:
try:
block_dict = json.loads(str(bd))
except:
block_dict = bd
block = Block()
block.timestamp = block_dict['timestamp']
block.blockNo = block_dict['blockNo']
block.prev_hash = block_dict['prev_hash']
block.proof = block_dict['proof']
ts = block_dict['_transactions']
_t = [
Transaction(t['origin'], t['key'], t['value'], t['timestamp'])
for t in ts
]
block._transactions = _t
builded_chain.append(block)
return builded_chain
def block_from_json(self, block_data):
for l in block_data:
block_data = json.loads(l)
block = Block() # New block
block.prev_hash = block_data['prev_hash']
block.blockNo = block_data['blockNo']
block.proof = block_data['proof']
block.timestamp = block_data['timestamp']
conf_transactions = []
for t in block_data['_transactions']:
t1 = Transaction(t['origin'], t['key'], t['value'], t['timestamp'])
if t1 in self._transactions:
conf_transactions.append(t1)
else:
print("[ERROR] Possible not syncro with other transactions")
return None
block._transactions = conf_transactions
if self.valid_block(block):
return block
return None