def is_valid_signature(provider: BaseProvider, data: str, signature: str,
signer_address: str) -> bool:
"""Check the validity of the supplied signature.
Check if the supplied `signature`:code: corresponds to signing `data`:code:
with the private key corresponding to `signer_address`:code:.
:param provider: A Web3 provider able to access the 0x Exchange contract.
:param data: The hex encoded data signed by the supplied signature.
:param signature: The hex encoded signature.
:param signer_address: The hex encoded address that signed the data to
produce the supplied signature.
:returns: Tuple consisting of a boolean and a string. Boolean is true if
valid, false otherwise. If false, the string describes the reason.
>>> is_valid_signature(
... Web3.HTTPProvider("http://127.0.0.1:8545"),
... '0x6927e990021d23b1eb7b8789f6a6feaf98fe104bb0cf8259421b79f9a34222b0',
... '0x1B61a3ed31b43c8780e905a260a35faefcc527be7516aa11c0256729b5b351bc3340349190569279751135161d22529dc25add4f6069af05be04cacbda2ace225403',
... '0x5409ed021d9299bf6814279a6a1411a7e866a631',
... )
True
""" # noqa: E501 (line too long)
assert_is_provider(provider, "provider")
assert_is_hex_string(data, "data")
assert_is_hex_string(signature, "signature")
assert_is_address(signer_address, "signer_address")
return Exchange(
provider,
chain_to_addresses(ChainId(1 # hard-coded to always be mainnet
)).exchange,
).is_valid_hash_signature.call(
bytes.fromhex(remove_0x_prefix(HexStr(data))),
to_checksum_address(signer_address),
bytes.fromhex(remove_0x_prefix(HexStr(signature))),
)
def parse_BIP122_uri(blockchain_uri: URI) -> Tuple[HexStr, str, HexStr]:
match = re.match(BIP122_URL_REGEX, blockchain_uri)
if match is None:
raise ValueError(f"Invalid URI format: '{blockchain_uri}'")
chain_id, resource_type, resource_hash = match.groups()
return (add_0x_prefix(HexStr(chain_id)), resource_type,
add_0x_prefix(HexStr(resource_hash)))
def ping_munger(
module: Any, identifier: Union[ENRAPI, str, bytes, NodeID,
HexStr]) -> List[str]:
"""
See: https://github.com/ethereum/web3.py/blob/002151020cecd826a694ded2fdc10cc70e73e636/web3/method.py#L77 # noqa: E501
Normalizes the any of the following inputs into the appropriate payload for
the ``discv5_ping` JSON-RPC API endpoint.
- An ENR object
- The string representation of an ENR
- A NodeID in the form of a bytestring
- A NodeID in the form of a hex string
- An ENode URI
Throws a ``ValueError`` if the input cannot be matched to one of these
formats.
"""
if isinstance(identifier, ENRAPI):
return [repr(identifier)]
elif isinstance(identifier, bytes):
if len(identifier) == 32:
return [encode_hex(identifier)]
raise ValueError(f"Unrecognized node identifier: {identifier!r}")
elif isinstance(identifier, str):
if identifier.startswith("enode://") or identifier.startswith("enr:"):
return [identifier]
elif len(remove_0x_prefix(HexStr(identifier))) == 64:
return [add_0x_prefix(HexStr(identifier))]
else:
raise ValueError(f"Unrecognized node identifier: {identifier}")
else:
raise ValueError(f"Unrecognized node identifier: {identifier}")
def to_hex(
primitive: Primitives = None, hexstr: HexStr = None, text: str = None
) -> HexStr:
"""
Auto converts any supported value into its hex representation.
Trims leading zeros, as defined in:
https://github.com/ethereum/wiki/wiki/JSON-RPC#hex-value-encoding
"""
if hexstr is not None:
return add_0x_prefix(HexStr(hexstr.lower()))
if text is not None:
return encode_hex(text.encode("utf-8"))
if is_boolean(primitive):
return HexStr("0x1") if primitive else HexStr("0x0")
if isinstance(primitive, (bytes, bytearray)):
return encode_hex(primitive)
elif is_string(primitive):
raise TypeError(
"Unsupported type: The primitive argument must be one of: bytes,"
"bytearray, int or bool and not str"
)
if is_integer(primitive):
return HexStr(hex(primitive))
raise TypeError(
"Unsupported type: '{0}'. Must be one of: bool, str, bytes, bytearray"
"or int.".format(repr(type(primitive)))
)
def _deserialize_channel_withdraw(
raw_event: Dict[str, Any],
identity_address_map: Dict[ChecksumAddress, ChecksumAddress],
) -> ChannelWithdraw:
"""Deserialize a channel withdraw event. Only for Tom pool.
It may raise KeyError.
TODO: use bidict or already pass the inverse identity_address_map.
"""
inverse_identity_address_map = {
address: identity
for identity, address in identity_address_map.items()
}
address = to_checksum_address(raw_event['user'])
identity_address = inverse_identity_address_map[address]
amount = FVal(raw_event['amount']) / ADX_AMOUNT_MANTISSA
return ChannelWithdraw(
tx_hash=HexStr(raw_event['id'].split(':')[0]),
address=address,
identity_address=identity_address,
timestamp=Timestamp(raw_event['timestamp']),
value=Balance(amount=amount),
channel_id=HexStr(raw_event['channelId']),
pool_id=TOM_POOL_ID,
)
def normalize_node_id_identifier(identifier: NodeIDIdentifier) -> str:
"""
Normalizes any of the following inputs into the appropriate payload for
representing a `NodeID` over a JSON-RPC API endpoint.
- An ENR object
- The string representation of an ENR
- A NodeID in the form of a bytestring
- A NodeID in the form of a hex string
- An ENode URI
Throws a ``ValueError`` if the input cannot be matched to one of these
formats.
"""
if isinstance(identifier, ENRAPI):
return repr(identifier)
elif isinstance(identifier, bytes):
if len(identifier) == 32:
return encode_hex(identifier)
raise ValueError(f"Unrecognized node identifier: {identifier!r}")
elif isinstance(identifier, str):
if identifier.startswith("enode://") or identifier.startswith("enr:"):
return identifier
elif len(remove_0x_prefix(HexStr(identifier))) == 64:
return add_0x_prefix(HexStr(identifier))
else:
raise ValueError(f"Unrecognized node identifier: {identifier}")
else:
raise ValueError(f"Unrecognized node identifier: {identifier}")
def from_order(cls, order: Order) -> "OrderORM":
return cls(
exchange_address=order.exchange_address,
maker_address=order.maker_address,
taker_address=order.taker_address,
maker_token=order.maker_token,
taker_token=order.taker_token,
fee_recipient=order.fee_recipient,
maker_token_amount=order.maker_token_amount,
taker_token_amount=order.taker_token_amount,
filled_maker_token_amount=order.filled_maker_token_amount,
filled_taker_token_amount=order.filled_taker_token_amount,
cancelled_maker_token_amount=order.cancelled_maker_token_amount,
cancelled_taker_token_amount=order.cancelled_taker_token_amount,
price=order.price,
maker_fee=order.maker_fee,
taker_fee=order.taker_fee,
expiration_timestamp_in_sec=order.expiration_timestamp_in_sec,
salt=order.salt,
v=order.v,
# remove 0x from r, s and msg_hash to keep backwards compatibility:
r=remove_0x_prefix(HexStr(order.r.hex())),
s=remove_0x_prefix(HexStr(order.s.hex())),
msg_hash=remove_0x_prefix(HexStr(order.hash().hex())),
)
def _get_user_identity(address: ChecksumAddress) -> ChecksumEthAddress:
"""Given an address (signer) returns its protocol user identity.
"""
return generate_address_via_create2(
address=HexAddress(HexStr(IDENTITY_FACTORY_ADDR)),
salt=HexStr(CREATE2_SALT),
init_code=HexStr(
IDENTITY_PROXY_INIT_CODE.format(signer_address=address)),
)
def test_trace_replay_transaction(
self, web3: "Web3", parity_fixture_data: Dict[str, str]) -> None:
trace = web3.parity.traceReplayTransaction(
HexStr(parity_fixture_data['mined_txn_hash']))
assert trace['stateDiff'] is None
assert trace['vmTrace'] is None
assert trace['trace'][0]['action']['from'] == add_0x_prefix(
HexStr(parity_fixture_data['coinbase']), )
def test_eth_submitWork(self, web3: "Web3") -> None:
nonce = 1
pow_hash = HexStr(
'0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef'
)
mix_digest = HexStr(
'0xD1FE5700000000000000000000000000D1FE5700000000000000000000000000'
)
result = web3.eth.submitWork(nonce, pow_hash, mix_digest)
assert result is False
def test_traceTransaction_deprecated(
self, web3: "Web3", parity_fixture_data: Dict[str, str]) -> None:
with pytest.warns(
DeprecationWarning,
match=
"traceTransaction is deprecated in favor of trace_transaction"
):
trace = web3.parity.traceTransaction(
HexStr(parity_fixture_data['mined_txn_hash']))
assert trace[0]['action']['from'] == add_0x_prefix(
HexStr(parity_fixture_data['coinbase']))
def to_hex_twos_compliment(value: Any, bit_size: int) -> HexStr:
"""
Converts integer value to twos compliment hex representation with given bit_size
"""
if value >= 0:
return to_hex_with_size(value, bit_size)
value = (1 << bit_size) + value
hex_value = hex(value)
hex_value = HexStr(hex_value.rstrip("L"))
return hex_value
def to_checksum_address(value: AnyStr) -> ChecksumAddress:
"""
Makes a checksum address given a supported format.
"""
norm_address = to_normalized_address(value)
address_hash = encode_hex(
keccak(text=remove_0x_prefix(HexStr(norm_address))))
checksum_address = add_0x_prefix(
HexStr("".join((norm_address[i].upper(
) if int(address_hash[i], 16) > 7 else norm_address[i])
for i in range(2, 42))))
return ChecksumAddress(HexAddress(checksum_address))
def test_generate_address_via_create2(
address,
salt,
init_code,
expected_contract_address,
):
"""Test the CREATE2 opcode Python implementation.
"""
contract_address = generate_address_via_create2(
address=HexAddress(address),
salt=HexStr(salt),
init_code=HexStr(init_code),
)
assert contract_address == to_checksum_address(expected_contract_address)
def test_traceReplayTransaction_deprecated(
self,
web3: "Web3",
parity_fixture_data: Dict[str, str],
) -> None:
with pytest.warns(
DeprecationWarning,
match='traceReplayTransaction is deprecated in favor of '
'trace_replay_transaction'):
trace = web3.parity.traceReplayTransaction(
HexStr(parity_fixture_data['mined_txn_hash']))
assert trace['stateDiff'] is None
assert trace['vmTrace'] is None
assert trace['trace'][0]['action']['from'] == add_0x_prefix(
HexStr(parity_fixture_data['coinbase']), )
def build_etherscan_manifest(uri: URI, package_name: str,
version: str) -> Iterable[Tuple[str, Any]]:
address, chain_id = parse.urlparse(uri).netloc.split(":")
network = get_etherscan_network(chain_id)
body = make_etherscan_request(address, network)
contract_type = body["ContractName"]
w3 = setup_w3(to_int(text=chain_id))
block_uri = create_latest_block_uri(w3)
runtime_bytecode = to_hex(
w3.eth.getCode(ChecksumAddress(HexAddress(HexStr(address)))))
yield "package_name", package_name
yield "version", version
yield "manifest_version", "2"
yield "sources", {f"./{contract_type}.sol": body["SourceCode"]}
yield "contract_types", {
contract_type: {
"abi": json.loads(body["ABI"]),
"runtime_bytecode": {
"bytecode": runtime_bytecode
},
"compiler": generate_compiler_info(body),
}
}
yield "deployments", {
block_uri: {
contract_type: {
"contract_type": contract_type,
"address": address
}
}
}
def test_verify_existent_deployment_with_wrong_code(
token_network_registry_contract: Contract, ) -> None:
""" Test verify_deployed_contracts_in_filesystem() with an existent deployment data
but with a fake web3 that does not return the correct code.
"""
web3_mock = Mock()
web3_mock.version.network = 42
web3_mock.eth.getTransactionReceipt = lambda _: {
"blockNumber": 10711807,
"gasUsed": 555366,
"contractAddress": "0x8Ff327f7ed03cD6Bd5e611E9e404B47d8c9Db81E",
}
verifier = ContractVerifier(web3=web3_mock, contracts_version="0.11.1")
# The Mock returns a wrong block number, so the comparison fails.
with pytest.raises(RuntimeError):
verifier.verify_deployed_contracts_in_filesystem()
with pytest.raises(RuntimeError):
verifier.verify_deployed_service_contracts_in_filesystem(
token_address=HexAddress(
HexStr("0x3Aa761BcDB064179a1e37748D8A5F577a177Be5c")),
user_deposit_whole_balance_limit=2**256 - 1,
token_network_registry_address=token_network_registry_contract.
address,
)
def decode_hex(value: str) -> bytes:
if not is_text(value):
raise TypeError("Value must be an instance of str")
non_prefixed = remove_0x_prefix(HexStr(value))
# unhexlify will only accept bytes type someday
ascii_hex = non_prefixed.encode("ascii")
return binascii.unhexlify(ascii_hex)
def get_escrow(escrow_addr: str) -> Contract:
"""Retrieve the Escrow contract from a given address.
>>> credentials = {
... "gas_payer": "0x1413862C2B7054CDbfdc181B83962CB0FC11fD92",
... "gas_payer_priv": "28e516f1e2f99e96a48a23cea1f94ee5f073403a1c68e818263f0eb898f1c8e5"
... }
>>> rep_oracle_pub_key = b"2dbc2c2c86052702e7c219339514b2e8bd4687ba1236c478ad41b43330b08488c12c8c1797aa181f3a4596a1bd8a0c18344ea44d6655f61fa73e56e743f79e0d"
>>> job = Job(credentials=credentials, escrow_manifest=manifest)
Deploying a new Job to the ethereum network succeeds.
>>> job.launch(rep_oracle_pub_key)
True
>>> type(get_escrow(job.job_contract.address))
<class 'web3._utils.datatypes.Contract'>
Args:
escrow_addr (str): an ethereum address of the escrow contract.
Returns:
Contract: returns the Escrow solidity contract.
"""
w3 = get_w3()
contract_interface = get_contract_interface(
"{}/Escrow.sol:Escrow".format(CONTRACT_FOLDER))
escrow = w3.eth.contract(
address=ChecksumAddress(HexAddress(HexStr(escrow_addr))),
abi=contract_interface["abi"],
)
return escrow
def get_factory(factory_addr: str) -> Contract:
"""Retrieve the EscrowFactory contract from a given address.
>>> credentials = {
... "gas_payer": "0x1413862C2B7054CDbfdc181B83962CB0FC11fD92",
... "gas_payer_priv": "28e516f1e2f99e96a48a23cea1f94ee5f073403a1c68e818263f0eb898f1c8e5"
... }
>>> job = Job(credentials=credentials, escrow_manifest=manifest)
>>> type(get_factory(job.factory_contract.address))
<class 'web3._utils.datatypes.Contract'>
Args:
factory_addr (str): the ethereum address of the Escrow contract.
Returns:
Contract: returns the EscrowFactory solidity contract.
"""
w3 = get_w3()
contract_interface = get_contract_interface(
"{}/EscrowFactory.sol:EscrowFactory".format(CONTRACT_FOLDER))
escrow_factory = w3.eth.contract(
address=ChecksumAddress(HexAddress(HexStr(factory_addr))),
abi=contract_interface["abi"],
)
return escrow_factory
def test_setup_name(ens, name, normalized_name, namehash_hex):
address = ens.w3.eth.accounts[3]
assert not ens.name(address)
owner = ens.owner('tester.eth')
ens.setup_name(name, address)
assert ens.name(address) == normalized_name
# check that the correct namehash is set:
node = Web3.toBytes(hexstr=HexStr(namehash_hex))
assert ens.resolver(normalized_name).caller.addr(node) == address
# check that the correct owner is set:
assert ens.owner(name) == owner
# setup name to point to new address
new_address = ens.w3.eth.accounts[4]
ens.setup_address(name, None)
ens.setup_name(name, new_address)
# validate that ens.name() only returns a name if the forward resolution also returns the
# address
assert ens.name(new_address) == normalized_name # reverse resolution
assert ens.address(name) == new_address # forward resolution
assert not ens.name(address)
ens.setup_name(None, address)
ens.setup_address(name, None)
assert not ens.name(address)
assert not ens.address(name)
def _deserialize_bond(
self,
raw_event: Dict[str, Any],
identity_address_map: Dict[ChecksumAddress, ChecksumAddress],
) -> Bond:
"""Deserialize a bond event.
It may raise KeyError.
"""
event_core_data = self._deserialize_event_core_data(
raw_event=raw_event,
identity_address_map=identity_address_map,
)
amount_int = int(raw_event['amount'])
amount = FVal(raw_event['amount']) / ADX_AMOUNT_MANTISSA
pool_id = HexStr(raw_event['poolId'])
nonce = int(raw_event['nonce'])
bond_id = self._get_bond_id(
identity_address=event_core_data.identity_address,
amount=amount_int,
pool_id=pool_id,
nonce=nonce,
)
return Bond(
tx_hash=event_core_data.tx_hash,
address=event_core_data.address,
identity_address=event_core_data.identity_address,
timestamp=event_core_data.timestamp,
bond_id=bond_id,
value=Balance(amount=amount),
pool_id=pool_id,
nonce=nonce,
slashed_at=Timestamp(int(raw_event['slashedAtStart'])),
)
def test_shh_remove_filter(self, web3: "Web3") -> None:
receiver = web3.parity.shh.new_key_pair()
receiver_pub = web3.parity.shh.get_public_key(receiver)
payload = web3.toHex(text="test message :)")
topic = HexStr('0x13370000')
shh_filter = web3.parity.shh.new_message_filter({'decryptWith': None, 'topics': [topic]})
assert web3.parity.shh.post({
'payload': payload,
'topics': [topic],
'to': {'public': receiver_pub},
'priority': 500,
'ttl': 400,
})
time.sleep(1)
# Commented out until parity filter bug is resolved
# https://github.com/paritytech/parity-ethereum/issues/10565
# message = ShhFilter(web3, shh_filter).get_new_entries()
# assert message["payload"] == HexBytes(payload)
assert web3.parity.shh.delete_message_filter(shh_filter)
try:
web3.parity.shh.get_filter_messages(shh_filter)
assert False
except BaseException:
assert True
def test_eth_sign(self, web3: "Web3",
unlocked_account_dual_type: ChecksumAddress) -> None:
signature = web3.eth.sign(unlocked_account_dual_type,
text='Message tö sign. Longer than hash!')
assert is_bytes(signature)
assert len(signature) == 32 + 32 + 1
# test other formats
hexsign = web3.eth.sign(
unlocked_account_dual_type,
hexstr=HexStr(
'0x4d6573736167652074c3b6207369676e2e204c6f6e676572207468616e206861736821'
))
assert hexsign == signature
intsign = web3.eth.sign(
unlocked_account_dual_type,
0x4d6573736167652074c3b6207369676e2e204c6f6e676572207468616e206861736821
)
assert intsign == signature
bytessign = web3.eth.sign(
unlocked_account_dual_type,
b'Message t\xc3\xb6 sign. Longer than hash!')
assert bytessign == signature
new_signature = web3.eth.sign(unlocked_account_dual_type,
text='different message is different')
assert new_signature != signature
def solidityKeccak(cls, abi_types: List[TypeStr],
values: List[Any]) -> bytes:
"""
Executes keccak256 exactly as Solidity does.
Takes list of abi_types as inputs -- `[uint24, int8[], bool]`
and list of corresponding values -- `[20, [-1, 5, 0], True]`
"""
if len(abi_types) != len(values):
raise ValueError(
"Length mismatch between provided abi types and values. Got "
"{0} types and {1} values.".format(len(abi_types),
len(values)))
if isinstance(cls, type):
w3 = None
else:
w3 = cls
normalized_values = map_abi_data([abi_ens_resolver(w3)], abi_types,
values)
hex_string = add_0x_prefix(
HexStr(''.join(
remove_0x_prefix(hex_encode_abi_type(abi_type, value))
for abi_type, value in zip(abi_types, normalized_values))))
return cls.keccak(hexstr=hex_string)
def hex_encode_abi_type(abi_type: TypeStr,
value: Any,
force_size: int = None) -> HexStr:
"""
Encodes value into a hex string in format of abi_type
"""
validate_abi_type(abi_type)
validate_abi_value(abi_type, value)
data_size = force_size or size_of_type(abi_type)
if is_array_type(abi_type):
sub_type = sub_type_of_array_type(abi_type)
return HexStr("".join([
remove_0x_prefix(hex_encode_abi_type(sub_type, v, 256))
for v in value
]))
elif is_bool_type(abi_type):
return to_hex_with_size(value, data_size)
elif is_uint_type(abi_type):
return to_hex_with_size(value, data_size)
elif is_int_type(abi_type):
return to_hex_twos_compliment(value, data_size)
elif is_address_type(abi_type):
return pad_hex(value, data_size)
elif is_bytes_type(abi_type):
if is_bytes(value):
return encode_hex(value)
else:
return value
elif is_string_type(abi_type):
return to_hex(text=value)
else:
raise ValueError("Unsupported ABI type: {0}".format(abi_type))
def eth_transfer(priv_key: str, from_addr: str, to_addr: str,
amount: float) -> TransferFuncResponse:
myweb3 = Web3(provider=HTTPProvider(endpoint_uri=ETH_FULL_NODE_RPC_URL))
# https://web3py.readthedocs.io/en/stable/web3.eth.account.html?highlight=transaction
# https://web3py.readthedocs.io/en/stable/web3.eth.account.html?highlight=transaction#sign-a-transaction
from_address = to_checksum_address(from_addr) #必须使用 checksum addres
block_identifier = HexStr('pending')
nonce = myweb3.eth.getTransactionCount(from_address,
block_identifier=block_identifier)
cur_gas_price = myweb3.eth.gasPrice #获取实时手续费
if cur_gas_price > Web3.toWei(500, 'gwei'): #防止手续费过高
cur_gas_price = Web3.toWei(500, 'gwei')
elif cur_gas_price < Web3.toWei(50, 'gwei'): #防止手续费过小
cur_gas_price = Web3.toWei(50, 'gwei')
private_key = priv_key
chksum_to_address = to_checksum_address(to_addr)
transaction = {
'to': to_checksum_address(chksum_to_address), #必须使用 checksum
'value': Web3.toWei(number=amount, unit='ether'),
'gas': 21000,
'gasPrice': cur_gas_price,
'nonce': nonce
}
print(transaction)
return sign_and_sendtransaction(myweb3=myweb3,
unsigned_tranaction=transaction,
private_key=private_key)
def test_trace_replay_block_with_transactions(
self, web3: "Web3", block_with_txn: BlockData, parity_fixture_data: Dict[str, str]
) -> None:
trace = web3.parity.traceReplayBlockTransactions(block_with_txn['number'])
assert len(trace) > 0
trace_0_action = trace[0]['trace'][0]['action']
assert trace_0_action['from'] == add_0x_prefix(HexStr(parity_fixture_data['coinbase']))
def test_eth_getLogs_with_logs_topic_args(
self,
web3: "Web3",
block_with_txn_with_log: BlockData,
emitter_contract_address: ChecksumAddress,
txn_hash_with_log: HexStr,
) -> None:
def assert_contains_log(result: Sequence[LogReceipt]) -> None:
assert len(result) == 1
log_entry = result[0]
assert log_entry['blockNumber'] == block_with_txn_with_log[
'number']
assert log_entry['blockHash'] == block_with_txn_with_log['hash']
assert log_entry['logIndex'] == 0
assert is_same_address(log_entry['address'],
emitter_contract_address)
assert log_entry['transactionIndex'] == 0
assert log_entry['transactionHash'] == HexBytes(txn_hash_with_log)
# Test with None event sig
filter_params: FilterParams = {
"fromBlock":
BlockNumber(0),
"topics": [
None,
HexStr(
'0x000000000000000000000000000000000000000000000000000000000000d431'
)
],
}
result = web3.eth.getLogs(filter_params)
assert_contains_log(result)
# Test with None indexed arg
filter_params = {
"fromBlock":
BlockNumber(0),
"topics": [
HexStr(
'0x057bc32826fbe161da1c110afcdcae7c109a8b69149f727fc37a603c60ef94ca'
), None
],
}
result = web3.eth.getLogs(filter_params)
assert_contains_log(result)
def get_deployment_chain_data(w3: Web3) -> Tuple[Optional[str], Optional[Any]]:
# todo: deployment_bytecode, runtime_bytecode, compiler
flag = parse_bool_flag("Do you have a tx hash for your deployment?")
if flag:
tx_hash = HexStr(input("Please enter your tx hash. "))
tx = w3.eth.getTransaction(tx_hash)
return tx_hash, to_hex(tx["blockHash"])
return (None, None)
