{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://paperspec.scient.ing/schemas/layer.schema.json",
  "title": "Layer",
  "description": "layer.json of scienting-layer/1: a W3C AnnotationCollection; spec/18-layers.md.",
  "type": "object",
  "properties": {
    "@context": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1
      },
      "minItems": 2
    },
    "format": {
      "const": "scienting-layer/1"
    },
    "id": {
      "type": "string",
      "pattern": "^tag:scient\\.ing,2026:layer:[a-z0-9][a-z0-9._-]*/[a-hjkmnp-tv-z][0-9a-hjkmnp-tv-z]{6,25}$"
    },
    "type": {
      "const": "AnnotationCollection"
    },
    "label": {
      "type": "string",
      "minLength": 1
    },
    "purpose": {
      "type": "string",
      "minLength": 1
    },
    "audience": {
      "enum": [
        "novice",
        "student",
        "expert",
        "mixed"
      ]
    },
    "visibility": {
      "enum": [
        "private",
        "team",
        "public"
      ]
    },
    "license": {
      "$ref": "common.schema.json#/$defs/license"
    },
    "creator": {
      "$ref": "common.schema.json#/$defs/agent"
    },
    "created": {
      "$ref": "common.schema.json#/$defs/time"
    },
    "project": {
      "$ref": "common.schema.json#/$defs/key"
    },
    "docs": {
      "type": "array",
      "items": {
        "$ref": "common.schema.json#/$defs/qualifiedKey"
      },
      "minItems": 1,
      "uniqueItems": true
    },
    "total": {
      "type": "integer",
      "minimum": 0
    }
  },
  "required": [
    "@context",
    "format",
    "id",
    "type",
    "label",
    "purpose",
    "visibility",
    "license",
    "creator",
    "created",
    "docs",
    "total"
  ],
  "additionalProperties": false
}