Copyright is automatic. A copyright notice will not protect you in case anyone copies your work.
If you want to protect your work, submit it to a timestamping service with your name/signature in it. Then you can at least show that at the given instant you were in possession of the work. If another party can't do the same for the same work at an earlier timepoint, then you have a stronger case.
If you want to protect your work, submit it to a timestamping service with your name/signature in it. Then you can at least show that at the given instant you were in possession of the work. If another party can't do the same for the same work at an earlier timepoint, then you have a stronger case.