transactions.py (in diffs/bpo5/amsterdam)

ethereum.forks.bpo5.transactionsethereum.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:

regular ¶

Regular execution gas (calldata, base cost, access list, etc.).

36	regular: Uint

state ¶

State growth gas (account creation, storage set, authorization) per EIP-8037.

39	state: Uint

calldata_floor ¶

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

47	calldata_floor: Uint

TX_MAX_GAS_LIMIT ¶

55	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.

57	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.

65	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.

74	@final

75	@slotted_freezable

76	@dataclass

class LegacyTransaction:

nonce ¶

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

89	nonce: U256

gas_price ¶

The price of gas for this transaction, in wei.

94	gas_price: Uint

gas ¶

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

99	gas: Uint

to ¶

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

104	to: Bytes0 \| Address

value ¶

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

110	value: U256

data ¶

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

115	data: Bytes

v ¶

The recovery id of the signature.

121	v: U256

r ¶

The first part of the signature.

126	r: U256

s ¶

The second part of the signature.

131	s: U256

Access ¶

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

137	@final

138	@slotted_freezable

139	@dataclass

class Access:

account ¶

The address of the account that is accessed.

146	account: Address

slots ¶

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

151	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.

157	@final

158	@slotted_freezable

159	@dataclass

class AccessListTransaction:

chain_id ¶

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

171	chain_id: U64

nonce ¶

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

176	nonce: U256

gas_price ¶

The price of gas for this transaction.

181	gas_price: Uint

gas ¶

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

186	gas: Uint

to ¶

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

191	to: Bytes0 \| Address

value ¶

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

197	value: U256

data ¶

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

202	data: Bytes

access_list ¶

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

208	access_list: Tuple[Access, ...]

y_parity ¶

The recovery id of the signature.

214	y_parity: U256

r ¶

The first part of the signature.

219	r: U256

s ¶

The second part of the signature.

224	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.

230	@final

231	@slotted_freezable

232	@dataclass

class FeeMarketTransaction:

chain_id ¶

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

243	chain_id: U64

nonce ¶

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

248	nonce: U256

max_priority_fee_per_gas ¶

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

253	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.

258	max_fee_per_gas: Uint

gas ¶

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

264	gas: Uint

to ¶

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

269	to: Bytes0 \| Address

value ¶

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

275	value: U256

data ¶

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

280	data: Bytes

access_list ¶

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

286	access_list: Tuple[Access, ...]

y_parity ¶

The recovery id of the signature.

292	y_parity: U256

r ¶

The first part of the signature.

297	r: U256

s ¶

The second part of the signature.

302	s: U256

BlobTransaction ¶

The transaction type added in EIP-4844.

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

308	@final

309	@slotted_freezable

310	@dataclass

class BlobTransaction:

chain_id ¶

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

321	chain_id: U64

nonce ¶

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

326	nonce: U256

max_priority_fee_per_gas ¶

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

331	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.

336	max_fee_per_gas: Uint

gas ¶

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

342	gas: Uint

to ¶

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

347	to: Address

value ¶

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

353	value: U256

data ¶

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

358	data: Bytes

access_list ¶

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

364	access_list: Tuple[Access, ...]

max_fee_per_blob_gas ¶

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

370	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.

375	blob_versioned_hashes: Tuple[VersionedHash, ...]

y_parity ¶

The recovery id of the signature.

381	y_parity: U256

r ¶

The first part of the signature.

386	r: U256

s ¶

The second part of the signature.

391	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.

397	@final

398	@slotted_freezable

399	@dataclass

class SetCodeTransaction:

chain_id ¶

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

410	chain_id: U64

nonce ¶

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

415	nonce: U64

max_priority_fee_per_gas ¶

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

420	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.

425	max_fee_per_gas: Uint

gas ¶

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

431	gas: Uint

to ¶

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

436	to: Address

value ¶

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

442	value: U256

data ¶

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

447	data: Bytes

access_list ¶

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

453	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.

459	authorizations: Tuple[Authorization, ...]

y_parity ¶

The recovery id of the signature.

465	y_parity: U256

r ¶

The first part of the signature.

470	r: U256

s ¶

The second part of the signature.

475	s: U256

Transaction ¶

Union type representing any valid transaction type.

481	Transaction = (
482	LegacyTransaction
483	\| AccessListTransaction
484	\| FeeMarketTransaction
485	\| BlobTransaction
486	\| SetCodeTransaction
487	)

AccessListCapableTransaction ¶

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

See has_access_list and Access for more details.

493	AccessListCapableTransaction = (
494	AccessListTransaction
495	\| FeeMarketTransaction
496	\| BlobTransaction
497	\| SetCodeTransaction
498	)

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:

511	<snip>
518	if isinstance(tx, LegacyTransaction):
519	return tx
520	elif isinstance(tx, AccessListTransaction):
521	return b"\x01" + rlp.encode(tx)
522	elif isinstance(tx, FeeMarketTransaction):
523	return b"\x02" + rlp.encode(tx)
524	elif isinstance(tx, BlobTransaction):
525	return b"\x03" + rlp.encode(tx)
526	elif isinstance(tx, SetCodeTransaction):
527	return b"\x04" + rlp.encode(tx)
528	else:
529	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.

~~Legacy transactions are returned as-is, while other transaction types~~Accept a LegacyTransaction object (returned as-is) or raw ~~are decoded based on their type identifier prefix.~~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:

533	<snip>
544	if isinstance(tx, Bytes):
545	if tx[0] == 1:
546	return rlp.decode_to(AccessListTransaction, tx[1:])
547	elif tx[0] == 2:
548	return rlp.decode_to(FeeMarketTransaction, tx[1:])
549	elif tx[0] == 3:
550	return rlp.decode_to(BlobTransaction, tx[1:])
551	elif tx[0] == 4:
552	return rlp.decode_to(SetCodeTransaction, tx[1:])
522	else:
523	raise TransactionTypeError(tx[0])
553	elif tx[0] >= 0xC0:
554	assert tx[0] <= 0xFE
555	return rlp.decode_to(LegacyTransaction, tx)
556	else:
557	raise TransactionTypeError(tx[0])
558	else:
559	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 as a parameter and returns the intrinsic~~This function takes a transaction and gas_limit as parameters and ~~gas cost and the minimum calldata gas cost for the transaction after~~returns the intrinsic gas costs for the transaction after validation. ~~validation. It throws an~~ It throws an InsufficientTransactionGasError ~~exception if~~ exception if the ~~the transaction does not provide enough gas to cover the intrinsic cost,~~transaction does not provide enough gas to cover the intrinsic cost, and a NonceOverflowError ~~exception if the nonce is greater than~~ exception if the nonce overflows. ~~2**64 - 2. It also raises an~~ It also raises an InitCodeTooLargeError ~~if the code size of~~ if the code ~~a contract creation transaction exceeds the maximum allowed size.~~size of a contract creation transaction exceeds the maximum allowed size.

def validate_transaction(tx: Transaction) -> IntrinsicGasCost:

563	<snip>
592	from .vm.interpreter import MAX_INIT_CODE_SIZE
593
594	intrinsic = calculate_intrinsic_cost(tx)
560	if max(intrinsic.regular, intrinsic.calldata_floor) > tx.gas:
561	raise InsufficientTransactionGasError("Insufficient gas")
595	intrinsic_gas = intrinsic.regular + intrinsic.state
596	if intrinsic_gas > tx.gas:
597	raise InsufficientTransactionGasError("Insufficient intrinsic gas")
598	if intrinsic.calldata_floor > tx.gas:
599	raise InsufficientTransactionGasError("Insufficient calldata floor")
600	if intrinsic.regular > TX_MAX_GAS_LIMIT:
601	raise InsufficientTransactionGasError(
602	"Intrinsic regular gas exceeds TX_MAX_GAS_LIMIT"
603	)
604	if intrinsic.calldata_floor > TX_MAX_GAS_LIMIT:
605	raise InsufficientTransactionGasError(
606	"Intrinsic calldata floor exceeds TX_MAX_GAS_LIMIT"
607	)
608	if U256(tx.nonce) >= U256(U64.MAX_VALUE):
609	raise NonceOverflowError("Nonce too high")
610	if tx.to == Bytes0(b"") and len(tx.data) > MAX_INIT_CODE_SIZE:
611	raise InitCodeTooLargeError("Code size too large")
566	if tx.gas > TX_MAX_GAS_LIMIT:
567	raise TransactionGasLimitExceededError("Gas limit too high")
612
613	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:

Base cost (TX_BASE)
Cost for data (zero and non-zero bytes)
Cost for contract creation (if applicable)
Cost for access list entries (if applicable)
Cost for authorizations (if applicable)

~~This function takes a transaction as a parameter and returns the intrinsic~~This function takes a transaction and gas_limit as parameters and ~~gas cost of the transaction and the minimum gas cost used by the~~returns the intrinsic regular gas cost, intrinsic state gas cost, and the ~~transaction based on the calldata size.~~minimum gas cost used by the transaction based on the calldata size.

def calculate_intrinsic_cost(tx: Transaction) -> IntrinsicGasCost:

617	<snip>
597	from .vm.gas import GasCosts, init_code_cost
641	from .vm.gas import (
642	GasCosts,
643	StateGasCosts,
644	init_code_cost,
645	)
646
599	num_zeros = Uint(tx.data.count(0))
600	num_non_zeros = ulen(tx.data) - num_zeros
601
602	tokens_in_calldata = num_zeros + num_non_zeros * Uint(4)
603	# EIP-7623 floor price (note: no EVM costs)
604	calldata_floor_gas_cost = (
605	tokens_in_calldata * GasCosts.TX_DATA_TOKEN_FLOOR + GasCosts.TX_BASE
606	)
647	tokens_in_calldata = count_tokens_in_data(tx.data)
648
649	data_cost = tokens_in_calldata * GasCosts.TX_DATA_TOKEN_STANDARD
650
651	create_regular_gas = Uint(0)
652	create_state_gas = Uint(0)
653	if tx.to == Bytes0(b""):
611	create_cost = GasCosts.TX_CREATE + init_code_cost(ulen(tx.data))
612	else:
613	create_cost = Uint(0)
654	create_state_gas = StateGasCosts.NEW_ACCOUNT
655	create_regular_gas = GasCosts.REGULAR_GAS_CREATE + init_code_cost(
656	ulen(tx.data)
657	)
658
659	access_list_cost = Uint(0)
660	tokens_in_access_list = Uint(0)
661	if has_access_list(tx):
662	for access in tx.access_list:
663	access_list_cost += GasCosts.TX_ACCESS_LIST_ADDRESS
664	access_list_cost += (
665	ulen(access.slots) * GasCosts.TX_ACCESS_LIST_STORAGE_KEY
666	)
667	tokens_in_access_list += ACCESS_LIST_ADDRESS_FLOOR_TOKENS
668	tokens_in_access_list += (
669	ulen(access.slots) * ACCESS_LIST_STORAGE_KEY_FLOOR_TOKENS
670	)
671
623	auth_cost = Uint(0)
672	# Data token floor cost for access list bytes.
673	access_list_cost += tokens_in_access_list * GasCosts.TX_DATA_TOKEN_FLOOR
674
675	auth_regular_gas = Uint(0)
676	auth_state_gas = Uint(0)
677	if isinstance(tx, SetCodeTransaction):
625	auth_cost += Uint(
626	GasCosts.AUTH_PER_EMPTY_ACCOUNT * len(tx.authorizations)
627	)
678	auth_regular_gas = GasCosts.PER_AUTH_BASE_COST * ulen(
679	tx.authorizations
680	)
681	auth_state_gas = (
682	StateGasCosts.NEW_ACCOUNT + StateGasCosts.AUTH_BASE
683	) * ulen(tx.authorizations)
684
685	# EIP-7976 floor tokens: all calldata bytes count uniformly.
686	floor_tokens_in_calldata = ulen(tx.data) * GasCosts.TX_DATA_TOKEN_STANDARD
687
688	# Total floor tokens.
689	total_floor_tokens = floor_tokens_in_calldata + tokens_in_access_list
690
691	# Floor gas cost (EIP-7623: minimum gas for data-heavy transactions).
692	data_floor_gas_cost = (
693	total_floor_tokens * GasCosts.TX_DATA_TOKEN_FLOOR + GasCosts.TX_BASE
694	)
695
696	intrinsic_regular_gas = (
697	GasCosts.TX_BASE
698	+ data_cost
699	+ create_regular_gas
700	+ access_list_cost
701	+ auth_regular_gas
702	)
703
704	intrinsic_state_gas = create_state_gas + auth_state_gas
705
706	return IntrinsicGasCost(
630	regular=Uint(
631	GasCosts.TX_BASE
632	+ data_cost
633	+ create_cost
634	+ access_list_cost
635	+ auth_cost
636	),
637	calldata_floor=calldata_floor_gas_cost,
707	regular=intrinsic_regular_gas,
708	state=intrinsic_state_gas,
709	calldata_floor=data_floor_gas_cost,
710	)

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:

714	<snip>
719	num_zeros = Uint(data.count(0))
720	num_non_zeros = ulen(data) - num_zeros
721
722	return num_zeros + num_non_zeros * Uint(4)

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(chain_id: U64, tx: Transaction) -> Address:

726	<snip>
739	r, s = tx.r, tx.s
740	if U256(0) >= r or r >= SECP256K1N:
741	raise InvalidSignatureError("bad r")
742	if U256(0) >= s or s > SECP256K1N // U256(2):
743	raise InvalidSignatureError("bad s")
744
745	if isinstance(tx, LegacyTransaction):
746	v = tx.v
747	if v == 27 or v == 28:
748	public_key = secp256k1_recover(
749	r, s, v - U256(27), signing_hash_pre155(tx)
750	)
751	else:
752	chain_id_x2 = U256(chain_id) * U256(2)
753	if v != U256(35) + chain_id_x2 and v != U256(36) + chain_id_x2:
754	raise InvalidSignatureError("bad v")
755	public_key = secp256k1_recover(
756	r,
757	s,
758	v - U256(35) - chain_id_x2,
759	signing_hash_155(tx, chain_id),
760	)
761	elif isinstance(tx, AccessListTransaction):
762	if tx.y_parity not in (U256(0), U256(1)):
763	raise InvalidSignatureError("bad y_parity")
764	public_key = secp256k1_recover(
765	r, s, tx.y_parity, signing_hash_2930(tx)
766	)
767	elif isinstance(tx, FeeMarketTransaction):
768	if tx.y_parity not in (U256(0), U256(1)):
769	raise InvalidSignatureError("bad y_parity")
770	public_key = secp256k1_recover(
771	r, s, tx.y_parity, signing_hash_1559(tx)
772	)
773	elif isinstance(tx, BlobTransaction):
774	if tx.y_parity not in (U256(0), U256(1)):
775	raise InvalidSignatureError("bad y_parity")
776	public_key = secp256k1_recover(
777	r, s, tx.y_parity, signing_hash_4844(tx)
778	)
779	elif isinstance(tx, SetCodeTransaction):
780	if tx.y_parity not in (U256(0), U256(1)):
781	raise InvalidSignatureError("bad y_parity")
782	public_key = secp256k1_recover(
783	r, s, tx.y_parity, signing_hash_7702(tx)
784	)
785
786	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:

790	<snip>
799	return keccak256(
800	rlp.encode(
801	(
802	tx.nonce,
803	tx.gas_price,
804	tx.gas,
805	tx.to,
806	tx.value,
807	tx.data,
808	)
809	)
810	)

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:

814	<snip>
822	return keccak256(
823	rlp.encode(
824	(
825	tx.nonce,
826	tx.gas_price,
827	tx.gas,
828	tx.to,
829	tx.value,
830	tx.data,
831	chain_id,
832	Uint(0),
833	Uint(0),
834	)
835	)
836	)

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:

840	<snip>
848	return keccak256(
849	b"\x01"
850	+ rlp.encode(
851	(
852	tx.chain_id,
853	tx.nonce,
854	tx.gas_price,
855	tx.gas,
856	tx.to,
857	tx.value,
858	tx.data,
859	tx.access_list,
860	)
861	)
862	)

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:

866	<snip>
874	return keccak256(
875	b"\x02"
876	+ rlp.encode(
877	(
878	tx.chain_id,
879	tx.nonce,
880	tx.max_priority_fee_per_gas,
881	tx.max_fee_per_gas,
882	tx.gas,
883	tx.to,
884	tx.value,
885	tx.data,
886	tx.access_list,
887	)
888	)
889	)

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:

893	<snip>
901	return keccak256(
902	b"\x03"
903	+ rlp.encode(
904	(
905	tx.chain_id,
906	tx.nonce,
907	tx.max_priority_fee_per_gas,
908	tx.max_fee_per_gas,
909	tx.gas,
910	tx.to,
911	tx.value,
912	tx.data,
913	tx.access_list,
914	tx.max_fee_per_blob_gas,
915	tx.blob_versioned_hashes,
916	)
917	)
918	)

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:

922	<snip>
930	return keccak256(
931	b"\x04"
932	+ rlp.encode(
933	(
934	tx.chain_id,
935	tx.nonce,
936	tx.max_priority_fee_per_gas,
937	tx.max_fee_per_gas,
938	tx.gas,
939	tx.to,
940	tx.value,
941	tx.data,
942	tx.access_list,
943	tx.authorizations,
944	)
945	)
946	)

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:

950	<snip>
958	assert isinstance(tx, (LegacyTransaction, Bytes))
959	if isinstance(tx, LegacyTransaction):
960	return keccak256(rlp.encode(tx))
961	else:
962	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]:

968	<snip>
973	return isinstance(
974	tx,
975	AccessListCapableTransaction,
976	)

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