Bytes32

Fixed-size 32-byte value type

Exactly 32 bytes — used for hashes, AES keys, and similar values.

Definition

class Bytes32(_SizedHexBytes):
    _size = 32

Construction

Parameter	Type	Required	Description
val	bytes | str | int	Yes	Hex string, raw bytes, or integer

Raises ValueError if length is not exactly 32 bytes.

Example

from seismic_web3 import Bytes32

block_hash = Bytes32("0x" + "ab" * 32)
print(len(block_hash))        # 32
print(block_hash.to_0x_hex())

Key properties

• Inherits from HexBytes — passes isinstance(x, bytes) checks

• Immutable and hashable

• Has .to_0x_hex() method for "0x"-prefixed hex output

See Also

• PrivateKey — 32-byte subclass for signing keys

• CompressedPublicKey — 33-byte public key

• EncryptionNonce — 12-byte nonce