def validate_block_timestamp(self, last_block_timestamp):
if last_block_timestamp >= self.blockheader.timestamp:
return False
curr_time = ntp.getTime()
if curr_time == 0:
return False
max_block_number = int((curr_time - last_block_timestamp) / c.block_creation_seconds)
if self.blockheader.blocknumber > max_block_number:
return False
def create(self, chain, blocknumber, hashchain_link, prev_blockheaderhash, number_transactions, hashedtransactions,
number_stake, hashedstake, reveal_list=None, vote_hashes=None, last_block_number=-1):
self.blocknumber = blocknumber
self.hash = hashchain_link
if self.blocknumber == 0:
self.timestamp = 0
else:
self.timestamp = ntp.getTime()
if self.timestamp == 0:
printL(('Failed to get NTP timestamp'))
return
self.prev_blockheaderhash = prev_blockheaderhash
self.number_transactions = number_transactions
self.merkle_root_tx_hash = hashedtransactions
self.number_stake = number_stake
self.hashedstake = hashedstake
self.reveal_list = reveal_list
self.vote_hashes = vote_hashes
self.epoch = self.blocknumber // c.blocks_per_epoch # need to add in logic for epoch stake_list recalculation..
if self.blocknumber == 0:
self.stake_selector = ''
self.stake_nonce = 0
self.block_reward = 0
elif self.blocknumber == 1:
tmp_chain, _ = chain.select_hashchain(
last_block_headerhash=chain.block_chain_buffer.get_strongest_headerhash(0), hashchain=chain.hash_chain,
blocknumber=self.blocknumber)
self.stake_nonce = c.blocks_per_epoch - tmp_chain.index(hashchain_link)
self.stake_selector = chain.mining_address
self.block_reward = self.block_reward_calc()
else:
for s in chain.block_chain_buffer.stake_list_get(self.blocknumber):
if s[0] == chain.mining_address:
self.stake_nonce = s[2] + 1
self.stake_selector = chain.mining_address
self.block_reward = self.block_reward_calc()
self.headerhash = sha256(
self.stake_selector + str(self.epoch) + str(self.stake_nonce) + str(self.block_reward) + str(
self.timestamp) + self.hash + str(self.blocknumber) + self.prev_blockheaderhash + str(
self.number_transactions) + self.merkle_root_tx_hash + str(self.number_stake) + self.hashedstake)
data = chain.my[0][1]
S = data.SIGN(self.headerhash)
self.i = S[0]
self.signature = S[1]
self.merkle_path = S[2]
self.i_bms = S[3]
self.pub = S[4]
self.PK = S[5]