[
  "@context", //JSON array where first = uri w3.org/2018/credentials/v1
  "id", // optional
  "type", //"[\",VerifiableCredential\", \"Guardaniship/1.0\"]",
  "credentialSchema", // points to cred def
  "issuanceDate", // standard in VCs RFC3339 Date-Time string
  "expirationDate",
  "credentialStatus", { "id" /*points to rev reg*/, "type": "sovrin rev reg 1.0" }
  "issuer", // <did>
  "trustFramework", // uri to a website
  "auditURI", // constrained by trust framework, but a URI
  "appealURI", // same
  "credentialSubject.holder.type", // uri to schema for a holder
  "credentialSubject.holder.role", // "parent" or "grandparent"
  "credentialSubject.holder.basisURI", // uri from trust framework that defines which basis justifies the guardianship
  "credentialSubject.holder.firstName",
  "credentialSubject.holder.constraints.boundaries",
  "credentialSubject.holder.constraints.pointOfOrigin",
  "credentialSubject.holder.constraints.radiusKM",
  "credentialSubject.holder.constraints.jurisdictions",
  "credentialSubject.holder.constraints.trigger",
  "credentialSubject.holder.constraints.circumstances",
  "credentialSubject.holder.constraints.startTime",
  "credentialSubject.holder.constraints.endTime",
  "credentialSubject.proxied.type", // uri to schema for a dependent
  "credentialSubject.proxied.permissions", // string of JSON array of grants
  "credentialSubject.proxied.firstName",
  "credentialSubject.proxied.lastName",
  "credentialSubject.proxied.birthDate",
  "credentialSubject.proxied.gender",
  "credentialSubject.proxied.nativeLanguage",
  "credentialSubject.proxied.identifyingMarks",
  "credentialSubject.proxied.photo",
  "credentialSubject.proxied.iris",
  "credentialSubject.proxied.fingerprint"
]