First implementation (#1)

Reviewed-on: #1

schemas/page.schema.json

@@ -0,0 +1,44 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://paperspec.scient.ing/schemas/page.schema.json",
+  "title": "Page",
+  "description": "One line of pages.jsonl; spec/07-geometry.md.",
+  "type": "object",
+  "properties": {
+    "witness": {
+      "$ref": "common.schema.json#/$defs/nodeId"
+    },
+    "page": {
+      "type": "integer",
+      "minimum": 1
+    },
+    "page_fp": {
+      "$ref": "common.schema.json#/$defs/hash"
+    },
+    "size": {
+      "$ref": "common.schema.json#/$defs/size"
+    },
+    "page_label": {
+      "type": "string",
+      "minLength": 1
+    },
+    "text_layer": {
+      "type": "boolean"
+    },
+    "stamps_removed": {
+      "type": "array",
+      "items": {
+        "$ref": "common.schema.json#/$defs/key"
+      },
+      "minItems": 1
+    }
+  },
+  "required": [
+    "witness",
+    "page",
+    "page_fp",
+    "size",
+    "text_layer"
+  ],
+  "additionalProperties": false
+}