In the United States, a copyright notice consists of three elements::
1. the © symbol (in some cases (c) is substituted), the word "Copyright" or abbreviation "Copr.";
2. the first year of publication; and
3. the owner of the copyright, either by name, abbreviation, or other designation.
A practical example (using a fictitious library) would be...
© 2009 Library of Obfuscation Inc. (a leisure time service of Diffusion Industries LLC)
Generally a trademark wouldn't additionally require a copyright statement; the (tm) or (R) indication would cover it.
A notification is not required for protection. That being said, it normally consists of the word "copyright," the copyright symbol, the year, and the name of the rightsholder(s).
The US Copyright Office is within the Library of Congress, which serves as its deposit library.
Sandy Norman has written: 'Copyright in Voluntary Sector Libraries (The Library Association Copyright Guides)' 'Copyright in industrial and commercial libraries' -- subject(s): Copyright, Corporate libraries, Fair use (Copyright) 'Copyright in Industrial and Commercial Libraries (The Library Association Copyright Guides)'
The US Copyright Office keeps them at the Library of Congress in Washington DC.
copyright library
The U.S. Copyright Office is part of (and physically located within) the Library of Congress, and the Librarian of Congress designates the Register of Copyrights.
Copyright is a federal law; the Copyright Office is part of the Library of Congress, which is overseen by Congress.
The first place to look is on the material itself. Then search the copyright records of the national library if necessary.
In the US, it's the Register of Copyrights. Most countries have a copyright office associated with the national library.
The copyright page of a book is typically on the reverse of the title page, and includes copyright notifications and cataloging data for the national library of the country in which it was published.
I think you mean written statement. What you are asking about write statement you are confusing with written statement, the same with write in statement. A written statement is simply putting your words, or your version of events in writing.