CHancuff@aol.com said:
> Edwin, some years ago there was talk of forming a sub-group of this mailing
>  list to tie down the loose ends to make this data register-able.  Since
> all  tzcode is derived from public domain, the only copyrightable part of it
> would be  it, as a collective work.

Not so - there is a difference between copyright on facts (doesn't exist)
and copyright on the way those facts are expressed (does exist). So the
specific format of the data is copyrightable. So is anything that is a
guess or extrapolation.

> To the best of my Intellectual Property Law knowledge, tzcode is 
> intrinsically in public domain,

Not a concept that exists in my jurisdiction.

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