Stackable badges

[polygirl]

I'm not sure if this discussion repo is still alive. If not, can someone please point me to the right place?

Similar to the discussion around learning pathways I am wondering whether the 2.0 standard could support stackable badges using the evidence fields? Has anyone tried this?

The top stack criteria for earning a badge would include links to the criteria the contained badges. The evidence URL's would include the earner's badge links - i.e.

{
  "@context": "https://w3id.org/openbadges/v2",
  "id": "https://example.org/beths-robotics-badge.json",
  "narrative": "This student invented her own type of robot. This included: \n\n  * Working robot arms\n  * Working robot legs",
  "evidence": [
    {
      "id": "public_badgeURL_1",
      "name": "Robot Arms and Legs Badge"
      "description": "A badge for building robot arms and legs"
      "genre": "Robotics"
    },
    {
      "id": "public_badge_URL_2",
      "name": "Robot Body Badge",
      "description": "A badge for building a robot torso and head."
    }