| http://www.w3.org/ns/prov#value | - A method of determining by a computer if a particular magnetic tape having records formed thereon which are divided into tracks is an original or a copy, with an original having indicia on at least one track of at least one record that are not modifiable by the tape write process, and a copy not having said indicia, or having indicia in a different pattern than said indicia, including a product pr
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