DecryptedApprovalLog

Decoded SRC20 Approval event with decrypted amount

Frozen dataclass representing a decoded SRC20 Approval event with decrypted amount.

Solidity Event

event Approval(
    address indexed owner,
    address indexed spender,
    bytes32 indexed encryptKeyHash,
    bytes encryptedAmount
)

Definition

@dataclass(frozen=True)
class DecryptedApprovalLog:
    owner: ChecksumAddress
    spender: ChecksumAddress
    encrypt_key_hash: bytes
    encrypted_amount: bytes
    decrypted_amount: int
    transaction_hash: HexBytes
    block_number: int

Fields

Field	Type	Description
owner	ChecksumAddress	Address granting the approval
spender	ChecksumAddress	Address receiving the approval
encrypt_key_hash	bytes	32-byte keccak256 of viewing key
encrypted_amount	bytes	Raw AES-GCM ciphertext
decrypted_amount	int	Decrypted approval amount
transaction_hash	HexBytes	Transaction hash
block_number	int	Block number

Example

from seismic_web3.src20 import DecryptedApprovalLog

def on_approval(log: DecryptedApprovalLog):
    print(f"Approval from {log.owner} to {log.spender}: {log.decrypted_amount}")
    print(f"Block {log.block_number}, tx {log.transaction_hash.hex()}")

See Also

• DecryptedTransferLog — Transfer event data

• Event Watching — Watch and decrypt events