In awk: curl https://gist.githubusercontent.com/jorin-vogel/7f19ce95a9a842956358...

In awk:

  curl https://gist.githubusercontent.com/jorin-vogel/7f19ce95a9a842956358/raw/e319340c2f6691f9cc8d8cc57ed532b5093e3619/data.json| awk -F"[:,]" 'BEGIN{OFS=",";print "Name,Credit Card"} $19~/([[:digit:]]{4}-){3}[[:digit:]]{4}/{ gsub(/"/,"",$2);gsub(/"|}/,"",$19); print $2,$19}' > $(date +%Y%m%d).CSV