import hashlib
import time
import uuid


def get_timestamp() -> float:
    """Return current timestamp."""
    return time.time()


def generate_id() -> str:
    """Generate a unique ID."""
    return str(uuid.uuid4())


def calculate_hash(data: dict) -> str:
    """Calculate SHA-256 hash of given dictionary."""
    json_data = str(sorted(data.items())).encode()
    return hashlib.sha256(json_data).hexdigest()