Vollkorn / 400
{
  "copyright": {
    "en": "Copyright 2018 The Vollkorn Project Authors (https://github.com/FAlthausen/Vollkorn-Typeface)"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}

Vollkorn / 600
{
  "copyright": {
    "en": "Copyright 2018 The Vollkorn Project Authors (https://github.com/FAlthausen/Vollkorn-Typeface)"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}

Vollkorn / 700
{
  "copyright": {
    "en": "Copyright 2018 The Vollkorn Project Authors (https://github.com/FAlthausen/Vollkorn-Typeface)"
  },
  "licenseURL": {
    "en": "http://scripts.sil.org/OFL"
  }
}