This is the default example configuration of ct_log_list.cnf provided by OpenSSL. This config file was generated by OpenSSL running on CentOS 8.
It is located under: /etc/pki/tls/ct_log_list.cnf
# This file specifies the Certificate Transparency logs
# that are to be trusted.
# Google's list of logs can be found here:
# www.certificate-transparency.org/known-logs
# A Python program to convert the log list to OpenSSL's format can be
# found here:
# https://github.com/google/certificate-transparency/blob/master/python/utilities/log_list/print_log_list.py
# Use the "--openssl_output" flag.
Download the raw file with wget or curl
wget -O ct_log_list.cnf.example http://exampleconfig.com/static/raw/openssl/centos8/etc/pki/tls/ct_log_list.cnf
curl http://exampleconfig.com/static/raw/openssl/centos8/etc/pki/tls/ct_log_list.cnf > ct_log_list.cnf.example
Other config files you might find useful