def serialize(data):
    """Serialize a dict into a JSON formatted string.

        This function enforces rules like the separator and order of keys.
        This ensures that all dicts are serialized in the same way.

        This is specially important for hashing data. We need to make sure that
        everyone serializes their data in the same way so that we do not have
        hash mismatches for the same structure due to serialization
        differences.

        Args:
            data (dict): dict to serialize

        Returns:
            str: JSON formatted string

    """
    return rapidjson.dumps(data, skipkeys=False, ensure_ascii=False,
                           sort_keys=True)
Serialize a dict into a JSON formatted string.

This function enforces rules like the separator and order of keys.
This ensures that all dicts are serialized in the same way.

This is specially important for hashing data. We need to make sure that
everyone serializes their data in the same way so that we do not have
hash mismatches for the same structure due to serialization
differences.

Args:
data (dict): dict to serialize

Returns:
str: JSON formatted string
bigchaindb/common/utils.py