transactions.py (in src/ethereum/forks/amsterdam)

ethereum.forks.amsterdam.transactions

Transactions are atomic units of work created externally to Ethereum and submitted to be executed. If Ethereum is viewed as a state machine, transactions are the events that move between states.

IntrinsicGasCost ¶

Intrinsic gas costs for a transaction, split by gas type.

31	@final

32	@dataclass

class IntrinsicGasCost:

execution ¶

Execution gas (calldata, base cost, access list, etc.).

36	execution: ExecutionGas

calldata_floor ¶

Minimum gas cost based on calldata size per EIP-7623.

39	calldata_floor: ExecutionGas

TX_MAX_GAS_LIMIT ¶

47	TX_MAX_GAS_LIMIT = Uint(16_777_216)

ACCESS_LIST_ADDRESS_FLOOR_TOKENS ¶

Floor data tokens contributed by a single access list address per EIP-7981.

49	ACCESS_LIST_ADDRESS_FLOOR_TOKENS = Uint(80)

ACCESS_LIST_STORAGE_KEY_FLOOR_TOKENS ¶

Floor data tokens contributed by a single access list storage key per EIP-7981.

57	ACCESS_LIST_STORAGE_KEY_FLOOR_TOKENS = Uint(128)

LegacyTransaction ¶

Atomic operation performed on the block chain. This represents the original transaction format used before EIP-1559, EIP-2930, EIP-4844, and EIP-7702.

66	@final

67	@slotted_freezable

68	@dataclass

class LegacyTransaction:

nonce ¶

A scalar value equal to the number of transactions sent by the sender.

81	nonce: U256

gas_price ¶

The price of gas for this transaction, in wei.

86	gas_price: Uint

gas ¶

The maximum amount of gas that can be used by this transaction.

91	gas: Uint

to ¶

The address of the recipient. If empty, the transaction is a contract creation.

96	to: Bytes0 \| Address

value ¶

The amount of ether (in wei) to send with this transaction.

102	value: U256

data ¶

The data payload of the transaction, which can be used to call functions on contracts or to create new contracts.

107	data: Bytes

v ¶

The recovery id of the signature.

113	v: U256

r ¶

The first part of the signature.

118	r: U256

s ¶

The second part of the signature.

123	s: U256

Access ¶

A mapping from account address to storage slots that are pre-warmed as part of a transaction.

129	@final

130	@slotted_freezable

131	@dataclass

class Access:

account ¶

The address of the account that is accessed.

138	account: Address

slots ¶

A tuple of storage slots that are accessed in the account.

143	slots: Tuple[Bytes32, ...]

AccessListTransaction ¶

The transaction type added in EIP-2930 to support access lists.

This transaction type extends the legacy transaction with an access list and chain ID. The access list specifies which addresses and storage slots the transaction will access.

149	@final

150	@slotted_freezable

151	@dataclass

class AccessListTransaction:

chain_id ¶

The ID of the chain on which this transaction is executed.

163	chain_id: U64

nonce ¶

A scalar value equal to the number of transactions sent by the sender.

168	nonce: U256

gas_price ¶

The price of gas for this transaction.

173	gas_price: Uint

gas ¶

The maximum amount of gas that can be used by this transaction.

178	gas: Uint

to ¶

The address of the recipient. If empty, the transaction is a contract creation.

183	to: Bytes0 \| Address

value ¶

The amount of ether (in wei) to send with this transaction.

189	value: U256

data ¶

The data payload of the transaction, which can be used to call functions on contracts or to create new contracts.

194	data: Bytes

access_list ¶

A tuple of Access objects that specify which addresses and storage slots are accessed in the transaction.

200	access_list: Tuple[Access, ...]

y_parity ¶

The recovery id of the signature.

206	y_parity: U256

r ¶

The first part of the signature.

211	r: U256

s ¶

The second part of the signature.

216	s: U256

FeeMarketTransaction ¶

The transaction type added in EIP-1559.

This transaction type introduces a new fee market mechanism with two gas price parameters: max_priority_fee_per_gas and max_fee_per_gas.

222	@final

223	@slotted_freezable

224	@dataclass

class FeeMarketTransaction:

chain_id ¶

The ID of the chain on which this transaction is executed.

235	chain_id: U64

nonce ¶

A scalar value equal to the number of transactions sent by the sender.

240	nonce: U256

max_priority_fee_per_gas ¶

The maximum priority fee per gas that the sender is willing to pay.

245	max_priority_fee_per_gas: Uint

max_fee_per_gas ¶

The maximum fee per gas that the sender is willing to pay, including the base fee and priority fee.

250	max_fee_per_gas: Uint

gas ¶

The maximum amount of gas that can be used by this transaction.

256	gas: Uint

to ¶

The address of the recipient. If empty, the transaction is a contract creation.

261	to: Bytes0 \| Address

value ¶

The amount of ether (in wei) to send with this transaction.

267	value: U256

data ¶

The data payload of the transaction, which can be used to call functions on contracts or to create new contracts.

272	data: Bytes

access_list ¶

A tuple of Access objects that specify which addresses and storage slots are accessed in the transaction.

278	access_list: Tuple[Access, ...]

y_parity ¶

The recovery id of the signature.

284	y_parity: U256

r ¶

The first part of the signature.

289	r: U256

s ¶

The second part of the signature.

294	s: U256

BlobTransaction ¶

The transaction type added in EIP-4844.

This transaction type extends the fee market transaction to support blob-carrying transactions.

300	@final

301	@slotted_freezable

302	@dataclass

class BlobTransaction:

chain_id ¶

The ID of the chain on which this transaction is executed.

313	chain_id: U64

nonce ¶

A scalar value equal to the number of transactions sent by the sender.

318	nonce: U256

max_priority_fee_per_gas ¶

The maximum priority fee per gas that the sender is willing to pay.

323	max_priority_fee_per_gas: Uint

max_fee_per_gas ¶

The maximum fee per gas that the sender is willing to pay, including the base fee and priority fee.

328	max_fee_per_gas: Uint

gas ¶

The maximum amount of gas that can be used by this transaction.

334	gas: Uint

to ¶

The address of the recipient. If empty, the transaction is a contract creation.

339	to: Address

value ¶

The amount of ether (in wei) to send with this transaction.

345	value: U256

data ¶

The data payload of the transaction, which can be used to call functions on contracts or to create new contracts.

350	data: Bytes

access_list ¶

A tuple of Access objects that specify which addresses and storage slots are accessed in the transaction.

356	access_list: Tuple[Access, ...]

max_fee_per_blob_gas ¶

The maximum fee per blob gas that the sender is willing to pay.

362	max_fee_per_blob_gas: U256

blob_versioned_hashes ¶

A tuple of objects that represent the versioned hashes of the blobs included in the transaction.

367	blob_versioned_hashes: Tuple[VersionedHash, ...]

y_parity ¶

The recovery id of the signature.

373	y_parity: U256

r ¶

The first part of the signature.

378	r: U256

s ¶

The second part of the signature.

383	s: U256

SetCodeTransaction ¶

The transaction type added in EIP-7702.

This transaction type allows Ethereum Externally Owned Accounts (EOAs) to set code on their account, enabling them to act as smart contracts.

389	@final

390	@slotted_freezable

391	@dataclass

class SetCodeTransaction:

chain_id ¶

The ID of the chain on which this transaction is executed.

402	chain_id: U64

nonce ¶

A scalar value equal to the number of transactions sent by the sender.

407	nonce: U64

max_priority_fee_per_gas ¶

The maximum priority fee per gas that the sender is willing to pay.

412	max_priority_fee_per_gas: Uint

max_fee_per_gas ¶

The maximum fee per gas that the sender is willing to pay, including the base fee and priority fee.

417	max_fee_per_gas: Uint

gas ¶

The maximum amount of gas that can be used by this transaction.

423	gas: Uint

to ¶

The address of the recipient. If empty, the transaction is a contract creation.

428	to: Address

value ¶

The amount of ether (in wei) to send with this transaction.

434	value: U256

data ¶

The data payload of the transaction, which can be used to call functions on contracts or to create new contracts.

439	data: Bytes

access_list ¶

A tuple of Access objects that specify which addresses and storage slots are accessed in the transaction.

445	access_list: Tuple[Access, ...]

authorizations ¶

A tuple of Authorization objects that specify what code the signer desires to execute in the context of their EOA.

451	authorizations: Tuple[Authorization, ...]

y_parity ¶

The recovery id of the signature.

457	y_parity: U256

r ¶

The first part of the signature.

462	r: U256

s ¶

The second part of the signature.

467	s: U256

Transaction ¶

Union type representing any valid transaction type.

473	Transaction = (
474	LegacyTransaction
475	\| AccessListTransaction
476	\| FeeMarketTransaction
477	\| BlobTransaction
478	\| SetCodeTransaction
479	)

AccessListCapableTransaction ¶

Transaction types that include an EIP-2930-style access list.

See has_access_list and Access for more details.

485	AccessListCapableTransaction = (
486	AccessListTransaction
487	\| FeeMarketTransaction
488	\| BlobTransaction
489	\| SetCodeTransaction
490	)

FeeMarketCapableTransaction ¶

Transaction types that include the EIP-1559-style fee structure.

See FeeMarketTransaction for more details.

502	FeeMarketCapableTransaction = (
503	FeeMarketTransaction \| BlobTransaction \| SetCodeTransaction
504	)

encode_transaction ¶

Encode a transaction into its RLP or typed transaction format. Needed because non-legacy transactions aren't RLP.

Legacy transactions are returned as-is, while other transaction types are prefixed with their type identifier and RLP encoded.

def encode_transaction(tx: Transaction) -> LegacyTransaction | Bytes:

516	<snip>
523	if isinstance(tx, LegacyTransaction):
524	return tx
525	elif isinstance(tx, AccessListTransaction):
526	return b"\x01" + rlp.encode(tx)
527	elif isinstance(tx, FeeMarketTransaction):
528	return b"\x02" + rlp.encode(tx)
529	elif isinstance(tx, BlobTransaction):
530	return b"\x03" + rlp.encode(tx)
531	elif isinstance(tx, SetCodeTransaction):
532	return b"\x04" + rlp.encode(tx)
533	else:
534	raise Exception(f"Unable to encode transaction of type {type(tx)}")

decode_transaction ¶

Decode a transaction from its RLP or typed transaction format. Needed because non-legacy transactions aren't RLP.

Accept a LegacyTransaction object (returned as-is) or raw bytes.

EIP-2718 states that the first byte distinguishes the format: [0x00, 0x7f] is a typed transaction, [0xc0, 0xfe] is a legacy transaction (RLP list prefix).

def decode_transaction(tx: LegacyTransaction | Bytes) -> Transaction:

538	<snip>
549	if isinstance(tx, Bytes):
550	if tx[0] == 1:
551	return rlp.decode_to(AccessListTransaction, tx[1:])
552	elif tx[0] == 2:
553	return rlp.decode_to(FeeMarketTransaction, tx[1:])
554	elif tx[0] == 3:
555	return rlp.decode_to(BlobTransaction, tx[1:])
556	elif tx[0] == 4:
557	return rlp.decode_to(SetCodeTransaction, tx[1:])
558	elif tx[0] >= 0xC0:
559	assert tx[0] <= 0xFE
560	return rlp.decode_to(LegacyTransaction, tx)
561	else:
562	raise TransactionTypeError(tx[0])
563	else:
564	return tx

The gas in a transaction gets used to pay for the intrinsic cost of operations, therefore if there is insufficient gas then it would not be possible to execute a transaction and it will be declared invalid.

Additionally, the nonce of a transaction must not equal or exceed the limit defined in EIP-2681. In practice, defining the limit as 2**64-1 has no impact because sending 2**64-1 transactions is improbable. It's not strictly impossible though, 2**64-1 transactions is the entire capacity of the Ethereum blockchain at 2022 gas limits for a little over 22 years.

Also, the code size of a contract creation transaction must be within limits of the protocol.

This function takes a transaction and gas_limit as parameters and returns the intrinsic gas costs for the transaction after validation. It throws an InsufficientTransactionGasError exception if the transaction does not provide enough gas to cover the intrinsic cost, and a NonceOverflowError exception if the nonce overflows. It also raises an InitCodeTooLargeError if the code size of a contract creation transaction exceeds the maximum allowed size.

def validate_transaction(tx: Transaction, sender: Address) -> IntrinsicGasCost:

568	<snip>
597	from .vm.interpreter import MAX_INIT_CODE_SIZE
598
599	intrinsic = calculate_intrinsic_cost(tx, sender)
600	intrinsic_gas = Uint(intrinsic.execution)
601	if intrinsic_gas > tx.gas:
602	raise InsufficientTransactionGasError("Insufficient intrinsic gas")
603	if intrinsic.calldata_floor > tx.gas:
604	raise InsufficientTransactionGasError("Insufficient calldata floor")
605	if tx.to == Bytes0(b"") and len(tx.data) > MAX_INIT_CODE_SIZE:
606	raise InitCodeTooLargeError("Code size too large")
607	if intrinsic.execution > TX_MAX_GAS_LIMIT:
608	raise InsufficientTransactionGasError(
609	"Intrinsic execution gas exceeds TX_MAX_GAS_LIMIT"
610	)
611	if intrinsic.calldata_floor > TX_MAX_GAS_LIMIT:
612	raise InsufficientTransactionGasError(
613	"Intrinsic calldata floor exceeds TX_MAX_GAS_LIMIT"
614	)
615	if U256(tx.nonce) >= U256(U64.MAX_VALUE):
616	raise NonceOverflowError("Nonce too high")
617
618	return intrinsic

calculate_intrinsic_cost ¶

Calculates the gas that is charged before execution is started.

The intrinsic cost of the transaction is charged before execution has begun. Functions/operations in the EVM cost money to execute so this intrinsic cost is for the operations that need to be paid for as part of the transaction. Data transfer, for example, is part of this intrinsic cost. It costs ether to send data over the wire and that ether is accounted for in the intrinsic cost calculated in this function. This intrinsic cost must be calculated and paid for before execution in order for all operations to be implemented.

The intrinsic cost includes:

Sender cost (TX_BASE).
Recipient cost (COLD_ACCOUNT_ACCESS for a non-self-transfer call, or CREATE_ACCESS for a contract creation). The created account's NEW_ACCOUNT state gas is state-dependent and is charged at the top frame, not here.
Value cost (TX_VALUE_COST for a non-self-transfer call) when tx.value > 0.
Calldata cost (zero and non-zero bytes).
Access list entries (if applicable).
Authorizations (if applicable): only the state-independent base cost (EXECUTION_PER_AUTH_BASE_COST) per tuple. The state-dependent account-creation and delegation-write costs are charged at the top frame by set_delegation.

Self-transfers (sender == tx.to) skip the recipient and value charges.

This function takes a transaction and its sender as parameters and returns the intrinsic execution gas cost and the minimum (floor) gas cost based on the calldata size. The floor is anchored on the execution-gas portion of items 1 to 3 above rather than TX_BASE alone, so it never undercuts the transaction's own intrinsic base.

def calculate_intrinsic_cost(tx: Transaction, sender: Address) -> IntrinsicGasCost:

624	<snip>
660	from .vm.gas import GasCosts, init_code_cost
661
662	tokens_in_calldata = count_tokens_in_data(tx.data)
663
664	data_cost = tokens_in_calldata * GasCosts.TX_DATA_TOKEN_STANDARD
665
666	is_create = tx.to == Bytes0(b"")
667	is_self_transfer = tx.to == sender
668
669	recipient_execution_gas = Uint(0)
670	init_code_gas = Uint(0)
671	if is_create:
672	recipient_execution_gas = GasCosts.CREATE_ACCESS
673	init_code_gas = init_code_cost(ulen(tx.data))
674	elif not is_self_transfer:
675	recipient_execution_gas = GasCosts.COLD_ACCOUNT_ACCESS
676	if tx.value > U256(0):
677	recipient_execution_gas += GasCosts.TX_VALUE_COST
678
679	access_list_cost = Uint(0)
680	tokens_in_access_list = Uint(0)
681	if has_access_list(tx):
682	for access in tx.access_list:
683	access_list_cost += GasCosts.TX_ACCESS_LIST_ADDRESS
684	access_list_cost += (
685	ulen(access.slots) * GasCosts.TX_ACCESS_LIST_STORAGE_KEY
686	)
687	tokens_in_access_list += ACCESS_LIST_ADDRESS_FLOOR_TOKENS
688	tokens_in_access_list += (
689	ulen(access.slots) * ACCESS_LIST_STORAGE_KEY_FLOOR_TOKENS
690	)
691
692	# Data token floor cost for access list bytes.
693	access_list_cost += tokens_in_access_list * GasCosts.TX_DATA_TOKEN_FLOOR
694
695	auth_cost = Uint(0)
696	if isinstance(tx, SetCodeTransaction):
697	auth_cost = GasCosts.EXECUTION_PER_AUTH_BASE_COST * ulen(
698	tx.authorizations
699	)
700
701	# EIP-7976 floor tokens: all calldata bytes count uniformly.
702	floor_tokens_in_calldata = ulen(tx.data) * GasCosts.TX_DATA_TOKEN_STANDARD
703
704	# Total floor tokens.
705	total_floor_tokens = floor_tokens_in_calldata + tokens_in_access_list
706
707	# Decomposed execution-gas intrinsic base (EIP-2780), which also
708	# anchors the calldata floor.
709	base_execution_gas = GasCosts.TX_BASE + recipient_execution_gas
710
711	# Floor gas cost (EIP-7623: minimum gas for data-heavy transactions).
712	data_floor_gas_cost = (
713	total_floor_tokens * GasCosts.TX_DATA_TOKEN_FLOOR + base_execution_gas
714	)
715
716	return IntrinsicGasCost(
717	execution=ExecutionGas(
718	base_execution_gas
719	+ init_code_gas
720	+ data_cost
721	+ access_list_cost
722	+ auth_cost
723	),
724	calldata_floor=ExecutionGas(data_floor_gas_cost),
725	)

count_tokens_in_data ¶

Count the data tokens in arbitrary input bytes.

Zero bytes count as 1 token; non-zero bytes count as 4 tokens.

def count_tokens_in_data(data: bytes) -> Uint:

729	<snip>
734	num_zeros = Uint(data.count(0))
735	num_non_zeros = ulen(data) - num_zeros
736
737	return num_zeros + num_non_zeros * Uint(4)

chain_id ¶

Extract the chain identifier from a transaction. See EIP-155.

def chain_id(tx: Transaction) -> None | U64:

741	<snip>
746	if isinstance(tx, LegacyTransaction):
747	if tx.v == 27 or tx.v == 28:
748	return None
749
750	if tx.v < U256(35):
751	raise InvalidSignatureError("bad v")
752
753	return U64((tx.v - U256(35)) >> U256(1))
754	else:
755	return tx.chain_id

recover_sender ¶

Extracts the sender address from a transaction.

The v, r, and s values are the three parts that make up the signature of a transaction. In order to recover the sender of a transaction the two components needed are the signature (v, r, and s) and the signing hash of the transaction. The sender's public key can be obtained with these two values and therefore the sender address can be retrieved.

This function takes chain_id and a transaction as parameters and returns the address of the sender of the transaction. It raises an InvalidSignatureError if the signature values (r, s, v) are invalid.

def recover_sender(tx: Transaction) -> Address:

759	<snip>
772	r, s = tx.r, tx.s
773	if U256(0) >= r or r >= SECP256K1N:
774	raise InvalidSignatureError("bad r")
775	if U256(0) >= s or s > SECP256K1N // U256(2):
776	raise InvalidSignatureError("bad s")
777
778	if isinstance(tx, LegacyTransaction):
779	v = tx.v
780	if v == 27 or v == 28:
781	public_key = secp256k1_recover(
782	r, s, v - U256(27), signing_hash_pre155(tx)
783	)
784	else:
785	assert v >= U256(35), "call chain_id before recover_sender"
786	tx_chain_id = U64((v - U256(35)) >> U256(1))
787	v = (v - U256(35)) & U256(1)
788	public_key = secp256k1_recover(
789	r,
790	s,
791	v,
792	signing_hash_155(tx, tx_chain_id),
793	)
794	elif isinstance(tx, AccessListTransaction):
795	if tx.y_parity not in (U256(0), U256(1)):
796	raise InvalidSignatureError("bad y_parity")
797	public_key = secp256k1_recover(
798	r, s, tx.y_parity, signing_hash_2930(tx)
799	)
800	elif isinstance(tx, FeeMarketTransaction):
801	if tx.y_parity not in (U256(0), U256(1)):
802	raise InvalidSignatureError("bad y_parity")
803	public_key = secp256k1_recover(
804	r, s, tx.y_parity, signing_hash_1559(tx)
805	)
806	elif isinstance(tx, BlobTransaction):
807	if tx.y_parity not in (U256(0), U256(1)):
808	raise InvalidSignatureError("bad y_parity")
809	public_key = secp256k1_recover(
810	r, s, tx.y_parity, signing_hash_4844(tx)
811	)
812	elif isinstance(tx, SetCodeTransaction):
813	if tx.y_parity not in (U256(0), U256(1)):
814	raise InvalidSignatureError("bad y_parity")
815	public_key = secp256k1_recover(
816	r, s, tx.y_parity, signing_hash_7702(tx)
817	)
818
819	return Address(keccak256(public_key)[12:32])

signing_hash_pre155 ¶

Compute the hash of a transaction used in a legacy (pre EIP-155) signature.

This function takes a legacy transaction as a parameter and returns the signing hash of the transaction.

def signing_hash_pre155(tx: LegacyTransaction) -> Hash32:

823	<snip>
832	return keccak256(
833	rlp.encode(
834	(
835	tx.nonce,
836	tx.gas_price,
837	tx.gas,
838	tx.to,
839	tx.value,
840	tx.data,
841	)
842	)
843	)

signing_hash_155 ¶

Compute the hash of a transaction used in a EIP-155 signature.

This function takes a legacy transaction and a chain ID as parameters and returns the hash of the transaction used in an EIP-155 signature.

def signing_hash_155(tx: LegacyTransaction, chain_id: U64) -> Hash32:

847	<snip>
855	return keccak256(
856	rlp.encode(
857	(
858	tx.nonce,
859	tx.gas_price,
860	tx.gas,
861	tx.to,
862	tx.value,
863	tx.data,
864	chain_id,
865	Uint(0),
866	Uint(0),
867	)
868	)
869	)

signing_hash_2930 ¶

Compute the hash of a transaction used in a EIP-2930 signature.

This function takes an access list transaction as a parameter and returns the hash of the transaction used in an EIP-2930 signature.

def signing_hash_2930(tx: AccessListTransaction) -> Hash32:

873	<snip>
881	return keccak256(
882	b"\x01"
883	+ rlp.encode(
884	(
885	tx.chain_id,
886	tx.nonce,
887	tx.gas_price,
888	tx.gas,
889	tx.to,
890	tx.value,
891	tx.data,
892	tx.access_list,
893	)
894	)
895	)

signing_hash_1559 ¶

Compute the hash of a transaction used in an EIP-1559 signature.

This function takes a fee market transaction as a parameter and returns the hash of the transaction used in an EIP-1559 signature.

def signing_hash_1559(tx: FeeMarketTransaction) -> Hash32:

899	<snip>
907	return keccak256(
908	b"\x02"
909	+ rlp.encode(
910	(
911	tx.chain_id,
912	tx.nonce,
913	tx.max_priority_fee_per_gas,
914	tx.max_fee_per_gas,
915	tx.gas,
916	tx.to,
917	tx.value,
918	tx.data,
919	tx.access_list,
920	)
921	)
922	)

signing_hash_4844 ¶

Compute the hash of a transaction used in an EIP-4844 signature.

This function takes a transaction as a parameter and returns the signing hash of the transaction used in an EIP-4844 signature.

def signing_hash_4844(tx: BlobTransaction) -> Hash32:

926	<snip>
934	return keccak256(
935	b"\x03"
936	+ rlp.encode(
937	(
938	tx.chain_id,
939	tx.nonce,
940	tx.max_priority_fee_per_gas,
941	tx.max_fee_per_gas,
942	tx.gas,
943	tx.to,
944	tx.value,
945	tx.data,
946	tx.access_list,
947	tx.max_fee_per_blob_gas,
948	tx.blob_versioned_hashes,
949	)
950	)
951	)

signing_hash_7702 ¶

Compute the hash of a transaction used in a EIP-7702 signature.

This function takes a transaction as a parameter and returns the signing hash of the transaction used in a EIP-7702 signature.

def signing_hash_7702(tx: SetCodeTransaction) -> Hash32:

955	<snip>
963	return keccak256(
964	b"\x04"
965	+ rlp.encode(
966	(
967	tx.chain_id,
968	tx.nonce,
969	tx.max_priority_fee_per_gas,
970	tx.max_fee_per_gas,
971	tx.gas,
972	tx.to,
973	tx.value,
974	tx.data,
975	tx.access_list,
976	tx.authorizations,
977	)
978	)
979	)

get_transaction_hash ¶

Compute the hash of a transaction.

This function takes a transaction as a parameter and returns the keccak256 hash of the transaction. It can handle both legacy transactions and typed transactions (AccessListTransaction, FeeMarketTransaction, etc.).

def get_transaction_hash(tx: Bytes | LegacyTransaction) -> Hash32:

983	<snip>
991	assert isinstance(tx, (LegacyTransaction, Bytes))
992	if isinstance(tx, LegacyTransaction):
993	return keccak256(rlp.encode(tx))
994	else:
995	return keccak256(tx)

has_access_list ¶

Return whether the transaction has an EIP-2930-style access list.

def has_access_list(tx: Transaction) -> TypeGuard[AccessListCapableTransaction]:

1001	<snip>
1006	return isinstance(
1007	tx,
1008	AccessListCapableTransaction,
1009	)

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ethereum.forks.amsterdam.transactions