def make_blocks(count, nonce_base=30000, previous_block_hash=b'\0' * 32):
blocks = []
for i in range(count):
s = i * nonce_base
txs = [COINBASE_TX] # + [make_tx(i) for i in range(s, s+8)]
nonce = s
while True:
block = Block(version=1, previous_block_hash=previous_block_hash, merkle_root=b'\0'*32, timestamp=1390000000+i*600, difficulty=i, nonce=nonce, txs=txs)
if block.hash()[-1] == i & 0xff:
break
nonce += 1
blocks.append(block)
previous_block_hash = block.hash()
return blocks
def make_blocks(count, nonce_base=30000, previous_block_hash=b'\0' * 32):
blocks = []
for i in range(count):
s = i * nonce_base
txs = [COINBASE_TX] # + [make_tx(i) for i in range(s, s+8)]
nonce = s
while True:
block = Block(version=1,
previous_block_hash=previous_block_hash,
merkle_root=b'\0' * 32,
timestamp=1390000000 + i * 600,
difficulty=i,
nonce=nonce,
txs=txs)
if block.hash()[-1] == i & 0xff:
break
nonce += 1
blocks.append(block)
previous_block_hash = block.hash()
return blocks
def make_blocks(count,
nonce_base=30000,
previous_block_hash=HASH_INITIAL_BLOCK):
blocks = []
for i in range(count):
s = i * nonce_base
txs = [coinbase_tx(i + 1)] + [make_tx(i) for i in range(s, s + 8)]
nonce = s
while True:
merkle_root = merkle([tx.hash() for tx in txs])
block = Block(version=1,
previous_block_hash=previous_block_hash,
merkle_root=merkle_root,
timestamp=GENESIS_TIME + i * 600,
difficulty=i,
nonce=nonce)
block.set_txs(txs)
if block.hash()[-1] == i & 0xff:
break
nonce += 1
blocks.append(block)
previous_block_hash = block.hash()
return blocks
def get_blockheader_with_transaction_hashes(self, block_hash):
URL = "%s/block/%s" % (self.base_url, b2h_rev(block_hash))
r = json.loads(urlopen(URL).read().decode("utf8"))
version = r.get("version")
previous_block_hash = h2b_rev(r.get("previousblockhash"))
merkle_root = h2b_rev(r.get("merkleroot"))
timestamp = r.get("time")
difficulty = int(r.get("bits"), 16)
nonce = int(r.get("nonce"))
tx_hashes = [h2b_rev(tx_hash) for tx_hash in r.get("tx")]
blockheader = Block(version, previous_block_hash, merkle_root, timestamp, difficulty, nonce)
if blockheader.hash() != block_hash:
return None, None
calculated_hash = merkle(tx_hashes, double_sha256)
if calculated_hash != merkle_root:
return None, None
blockheader.height = r.get("height")
return blockheader, tx_hashes
def get_blockheader_with_transaction_hashes(self, block_hash):
URL = "%s%sblock/%s" % (self.base_url, self.base_path, b2h_rev(block_hash))
r = json.loads(urlopen(URL).read().decode("utf8"))
version = r.get("version")
previous_block_hash = h2b_rev(r.get("previousblockhash"))
merkle_root = h2b_rev(r.get("merkleroot"))
timestamp = r.get("time")
difficulty = int(r.get("bits"), 16)
nonce = int(r.get("nonce"))
tx_hashes = [h2b_rev(tx_hash) for tx_hash in r.get("tx")]
blockheader = Block(version, previous_block_hash, merkle_root, timestamp, difficulty, nonce)
if blockheader.hash() != block_hash:
return None, None
calculated_hash = merkle(tx_hashes, double_sha256)
if calculated_hash != merkle_root:
return None, None
blockheader.height = r.get("height")
return blockheader, tx_hashes
