Feb. 17, 2016
11:29 p.m.
I want to say https://wiki.creativecommons.org/wiki/CC0 is the answer, but it appears to require a lot more than a "simple sentence," so I am now pretty unsure. --jhawk@mit.edu John Hawkinson Martin Burnicki <martin.burnicki@meinberg.de> wrote on Thu, 18 Feb 2016 at 00:22:59 +0100 in <56C500D3.2060206@meinberg.de>:
He agrees with my proposal to add a copyright notice to the IERS leap second file, which expresses that the file can freely be copied, and asks for a proposal for an appropriate wording.
I'm also not neither too familiar with legal stuff concerning copyright, nor is English my native language, so eventually someone can propose a simple sentence which can be added to the leap second file.