#   ____    _    ____ _   _ _____ ____ ___ ____  _____  _    ____
#  / ___|  / \  / ___| | | | ____|  _ \_ _|  _ \|_   _|/ \  / ___|
# | |     / _ \| |   | |_| |  _| | | | | || |_) | | | / _ \| |  _
# | |___ / ___ \ |___|  _  | |___| |_| | ||  _ < _| |/ ___ \ |_| |
#  \____/_/   \_\____|_| |_|_____|____/___|_| \_(_)_/_/   \_\____|
#

CACHEDIR.TAG

TL;DR: There is a reason both the title and the figlet are both capitalized, and that is the file label also needs to be capitalized, and include Signature: 8a477f597d28d172789f06886806bc55.

Bryan Ford, proposed that directories who primary purpose is to store cache should include a “special” tag file which identifies them as cache directories. He mentions his reasons for this, and the file format in detail HERE