diff --git a/src/kernel_types.rs b/src/kernel_types.rs
index 1d73be8..e79aef6 100644
--- a/src/kernel_types.rs
+++ b/src/kernel_types.rs
@@ -1,7 +1,7 @@
 use crate::kinode::process::standard as wit;
 use crate::{Address, ProcessId};
 use serde::{Deserialize, Serialize};
-use std::collections::HashSet;
+use std::collections::{HashMap, HashSet};
 
 //
 // process-facing kernel types, used for process
@@ -198,17 +198,47 @@ impl StateError {
 // package types
 //
 
-pub type PackageVersion = (u32, u32, u32);
-
-/// the type that gets deserialized from `metadata.json` in a package
-#[derive(Debug, Serialize, Deserialize)]
-pub struct PackageMetadata {
-    pub package: String,
+/// Represents the metadata associated with a kinode package, which is an ERC721 compatible token.
+/// This is deserialized from the `metadata.json` file in a package.
+/// Fields:
+/// - `name`: An optional field representing the display name of the package. This does not have to be unique, and is not used for identification purposes.
+/// - `description`: An optional field providing a description of the package.
+/// - `image`: An optional field containing a URL to an image representing the package.
+/// - `external_url`: An optional field containing a URL for more information about the package. For example, a link to the github repository.
+/// - `animation_url`: An optional field containing a URL to an animation or video representing the package.
+/// - `properties`: A requried field containing important information about the package.
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct Erc721Metadata {
+    pub name: Option<String>,
+    pub description: Option<String>,
+    pub image: Option<String>,
+    pub external_url: Option<String>,
+    pub animation_url: Option<String>,
+    pub properties: Erc721Properties,
+}
+
+/// Represents critical fields of a kinode package in an ERC721 compatible format.
+/// This follows the [ERC1155](https://github.com/ethereum/ercs/blob/master/ERCS/erc-1155.md#erc-1155-metadata-uri-json-schema) metadata standard.
+///
+/// Fields:
+/// - `package_name`: The unique name of the package, used in the `PackageId`, e.g. `package_name:publisher`.
+/// - `publisher`: The KNS identity of the package publisher used in the `PackageId`, e.g. `package_name:publisher`
+/// - `current_version`: A string representing the current version of the package, e.g. `1.0.0`.
+/// - `mirrors`: A list of NodeIds where the package can be found, providing redundancy.
+/// - `code_hashes`: A map from version names to their respective SHA-256 hashes.
+/// - `license`: An optional field containing the license of the package.
+/// - `screenshots`: An optional field containing a list of URLs to screenshots of the package.
+/// - `wit_version`: An optional field containing the version of the WIT standard that the package adheres to.
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct Erc721Properties {
+    pub package_name: String,
     pub publisher: String,
-    pub version: PackageVersion,
+    pub current_version: String,
+    pub mirrors: Vec<NodeId>,
+    pub code_hashes: HashMap<String, String>,
+    pub license: Option<String>,
+    pub screenshots: Option<Vec<String>>,
     pub wit_version: Option<(u32, u32, u32)>,
-    pub description: Option<String>,
-    pub website: Option<String>,
 }
 
 /// the type that gets deserialized from each entry in the array in `manifest.json`