Where do I see the version of a font?

[digeomel]

I've downloaded OpenSans using your Web app, and I noticed it says that they are version 17. The question is, where is this version coming from? I searched around on the google fonts website and the github page and all I could find for OpenSans was this:

There is no mention of the number 17 anywhere.

[denisbrodbeck]

If you select the font from google fonts and select the Embed option, you get the this link <link href="https://fonts.googleapis.com/css2?family=Open+Sans&display=swap" rel="stylesheet">

Calling the https://fonts.googleapis.com/css2?family=Open+Sans&display=swap link in your browser gives you:

/* cyrillic-ext */
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local('Open Sans Regular'), local('OpenSans-Regular'), url(https://fonts.gstatic.com/s/opensans/v17/mem8YaGs126MiZpBA-UFWJ0bbck.woff2) format('woff2');
  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
/* cyrillic */
@font-face {
  font-family: 'Open Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local('Open Sans Regular'), local('OpenSans-Regular'), url(https://fonts.gstatic.com/s/opensans/v17/mem8YaGs126MiZpBA-UFUZ0bbck.woff2) format('woff2');
  unicode-range: U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
...

There you can see the version 17: https://fonts.gstatic.com/s/opensans/v17