PREIN

/bin/sh

/usr/share/rpm-helper/add-user bitcoin $1 bitcoin /dev/null /bin/false

PREUN

/bin/sh

/usr/share/rpm-helper/del-service bitcoin $1 bitcoin

POSTIN

/bin/sh

if ! /usr/bin/id bitcoin &>/dev/null; then
       /usr/sbin/useradd -r -g bitcoin -s /bin/false -c "Bitcoin" -d /var/run/bitcoin bitcoin
fi
/usr/bin/systemd-tmpfiles --create bitcoin.conf 

/usr/share/rpm-helper/add-service bitcoin $1 bitcoin