diff --git a/metadata/README.md b/metadata/README.md
index f3cfedf..65e0f28 100644
--- a/metadata/README.md
+++ b/metadata/README.md
@@ -1,43 +1,22 @@
 # Metadata definitions
 
-# TODO
-* Decide on a file structure. This shouldn't be one giant json file, but it needs to be split in
-	useful ways.
-
-## Image
-A stored copy of a game's disk image. For example:
-	- Star Fox 64 (U) v1.2.z64
-	- Star Fox 64 (U) v1.2.v64
-
-	* UUID
-		- A unique identifier for this specific data object.
-	* format
-		- The format this image is stored in. For example: bin, iso, chd, z64, v64
-	* sha1sum
-		- The sha1sum hash of this specific image.
-	* release
-		- The release that this image was taken from.
-	* dump credit
-		- Where the hash came from, who dumped it, etc
-
-## Release
-A single release of a game. For example: Star Fox 64 (U) v1.2
+## Platform
+A single set of hardware and/or software that shares compatibility. For example:
+	- Nintendo Entertainment System
+	- Microsoft Windows 7
+	- Microsoft Windows 98
 
-	* UUID
 	* name
-		- The release's name in the language and script it was released in.
-	* region
-		- The official release code for the game.
-	* version
-		- The release version of the game. Some are verison numbers, some are just sequential
-			release numbers.
-	* disambiguation (can be empty)
-		- If this release is different in a way that isn't region or version, that information goes
-			here.
-	* release group
-		- The UUID of release group that this release belongs to.
-	* platform
-		- The UUID of the platform that this release is built for.
+		- The English name of the platform. As with release group names, this is mostly for
+			hand-editing data.
+	* regional_names
+		- A hash map with the keys being language identifers (en-US, jp, fr, etc) and the values
+			being the platform's name in the language and script it was released in.
+	* shortcode
+		- A small, three to five letter code for the platform. This must be unique among other
+			platforms.
+	* release groups
+		- A list containing release groups for this platform.
 
 ## Release group
 A container for all languages and versions of a release. For example, the Star Fox 64 release
@@ -47,46 +26,55 @@ A container for all languages and versions of a release. For example, the Star F
 	- Star Fox 64 (J) v1.0
 	- Lylat Wars (E) v1.0
 
-	* UUID
 	* name
 		- The English name for the release group. This is largely for contributors to quickly
 			understand the raw data, as frontends should ideally pull the name from a configured
 			region or something.
+	* releases
+		- A list containing all releases in this release group.
 
-## Platform
-A single set of hardware and/or software that shares compatibility. For example:
-	- Nintendo Entertainment System
-	- Microsoft Windows 7
-	- Microsoft Windows 98
 
-	* UUID
+## Release
+A single release of a game. For example: Star Fox 64 (U) v1.2
+
 	* name
-		- The English name of the platform. As with release group names, this is mostly for
-			hand-editing data.
-	* regional_names
-		- A hash map with the keys being language identifers (en-US, jp, fr, etc) and the values
-			being the platform's name in the language and script it was released in.
-	* shortcode
-		- A small, three-letter code for the platform. This is essentially for directory names.
+		- The release's name in the language and script it was released in.
+	* region
+		- The official release code for the game.
+	* version
+		- The release version of the game. Some are verison numbers, some are just sequential
+			release numbers.
+	* disambiguation (can be empty)
+		- If this release is different in a way that isn't region or version, that information goes
+			here.
+	* images
+		- A list of all images of this release.
+## Image
+A stored copy of a game's disk image. For example:
+	- Star Fox 64 (U) v1.2.z64
+	- Star Fox 64 (U) v1.2.v64
+
+	* format
+		- The format this image is stored in. For example: bin, iso, chd, z64, v64
+	* sha1sum
+		- The sha1sum hash of this specific image.
+	* dump credit
+		- Where the hash came from, who dumped it, etc
+	* patches (can be empty)
+		- A list of patches that are intended to apply to this image.
 
 ## Patches
 Unofficial patches or mods for a game, usually called romhacks.
 
-	* UUID
 	* name
 		- The patch's name in it's original language.
 	* file sha1sum
 		- The patch file's sha1sum.
-	* target image
-		- The UUID of the image that the patch is intended to be applied to.
 
 # Design notes
 
 * This spec is designed with the intent to be imported into databases while also being reasonably
 hand-editable for contributors.
 
-* Everything has a UUID because formats and hashing algorithms change, and this should be made as
-long-term and language-agnostic as is reasonable.
-
 * Releases have multiple images to account for different formats. The z64 and v64 images of the
 same N64 game are different files with different hashes.