Copyrights

I was touring the Library of Congress copyright page today, getting ready to update an old song with lyrics.
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I came across a couple of pieces of information on their site that people frequently ask about, and here are the answers, right from the horse's mouth:
I’ve heard about a “poor man’s copyright.” What is it?
The practice of sending a copy of your own work to yourself is sometimes called a “poor man’s copyright.”
There is no provision in the copyright law regarding any such type of protection, and it is not a substitute for registration.
How long does a copyright last?
The term of copyright for a particular work depends on several factors, including whether it has been published, and, if so, the date of first publication.
As a general rule, for works created after January 1, 1978, copyright protection lasts for the life of the author plus an additional 70 years.
.
I came across a couple of pieces of information on their site that people frequently ask about, and here are the answers, right from the horse's mouth:
I’ve heard about a “poor man’s copyright.” What is it?
The practice of sending a copy of your own work to yourself is sometimes called a “poor man’s copyright.”
There is no provision in the copyright law regarding any such type of protection, and it is not a substitute for registration.
How long does a copyright last?
The term of copyright for a particular work depends on several factors, including whether it has been published, and, if so, the date of first publication.
As a general rule, for works created after January 1, 1978, copyright protection lasts for the life of the author plus an additional 70 years.