Compression Stroke after verifying TDC

back the crank up CCW ~20*, remove the #1 spark plug, disable the ignition system.
If you are by yourself;
and you have a bump starter;
then stick your finger over the hole and bump the starter.
If you are on compression stroke, it will blow your finger off.

If you do not have a bump-starter;
then find a minimum 2 ft length of hose that neatly fits in either the plug hole or the recess. Stick the other end in your mouth,loosely; then crank the piston back up with a bar in the CW direction. If you are on compression, the piston will send a shot of air into your mouth.

If you cannot find a hose;
then just plug the recess with whatever is handy, it doesn't have to seal all that well. Then crank the piston back up with a bar in the CW direction. If you are on compression, the piston will shotgun whatever you put in there, into next Tuesday.

If you cannot find a suitable projectile;
Pull the driver-side valve cover, and watch the valves as you crank the piston back up with a bar in the CW direction. If you are on compression, the valves will NOT move.

But if you have a helper;
Put him on the bar routine.

But if the helper is your wife, do not give her the keys to crank the engine. I never met a woman who could bump-start ...........no matter how many times you show her.
Instead, stick the hose in her mouth, while you crank the piston back up with a bar in the CW direction. You'll be able to tell right away if you are on the compression stroke..... Do yourself a favor; do not ask your wife for help with this particular project.