I think you’ve missed the point. Copyright laws prevent others from copying your work without permission. (Hence the name.) Copyright laws say nothing about who can read your work.
If you want to prevent a web spider from scraping your blog, use a captcha or robots.txt. Copyright law doesn’t apply to this scenario.
If you want to prevent a web spider from scraping your blog, use a captcha or robots.txt. Copyright law doesn’t apply to this scenario.