def get_blockheader_with_transaction_hashes(self, block_hash): URL = "%s/api/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 = BlockHeader(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