def get_merkle(self, tx_hash, height):
block_hash = self.bitcoind('getblockhash', [height])
b = self.bitcoind('getblock', [block_hash])
tx_list = b.get('tx')
tx_pos = tx_list.index(tx_hash)
merkle = map(hash_decode, tx_list)
target_hash = hash_decode(tx_hash)
s = []
while len(merkle) != 1:
if len(merkle)%2: merkle.append( merkle[-1] )
n = []
while merkle:
new_hash = Hash( merkle[0] + merkle[1] )
if merkle[0] == target_hash:
s.append( hash_encode( merkle[1]))
target_hash = new_hash
elif merkle[1] == target_hash:
s.append( hash_encode( merkle[0]))
target_hash = new_hash
n.append( new_hash )
merkle = merkle[2:]
merkle = n
return {"block_height":height, "merkle":s, "pos":tx_pos}
def deserialize_block(self, block):
txlist = block.get('tx')
tx_hashes = [] # ordered txids
txdict = {} # deserialized tx
is_coinbase = True
for raw_tx in txlist:
tx_hash = hash_encode(Hash(raw_tx.decode('hex')))
tx_hashes.append(tx_hash)
vds = deserialize.BCDataStream()
vds.write(raw_tx.decode('hex'))
tx = deserialize.parse_Transaction(vds, is_coinbase)
txdict[tx_hash] = tx
is_coinbase = False
return tx_hashes, txdict
