diff --git a/src/ddo/Asset.ts b/src/ddo/Asset.ts
index fa4deb23..180aeb0c 100644
--- a/src/ddo/Asset.ts
+++ b/src/ddo/Asset.ts
@@ -35,9 +35,21 @@ export interface AssetNft {
    * @type {number}
    */
   state: 0 | 1 | 2 | 3 | 4
+
+  /**
+   * Contains the date of NFT creation.
+   * @type {string}
+   */
+  created: string
 }
 
 export interface AssetDatatoken {
+  /**
+   * Contract address of the deployed ERC20 contract.
+   * @type {string}
+   */
+  address: string
+
   /**
    * Name of NFT set in contract.
    * @type {string}
@@ -50,12 +62,6 @@ export interface AssetDatatoken {
    */
   symbol: string
 
-  /**
-   * Contract address of the deployed ERC20 contract.
-   * @type {string}
-   */
-  address: string
-
   /**
    * ID of the service the datatoken is attached to.
    * @type {string}
@@ -68,6 +74,7 @@ export interface AssetLastEvent {
   block: number
   from: string
   contract: string
+  datetime: string
 }
 
 export class Asset extends DDO {
@@ -93,17 +100,17 @@ export class Asset extends DDO {
    * The stats section contains different statistics fields.
    * @type {string}
    */
-  stats: { consume: number }
+  stats: {
+    /**
+     * How often an asset was consumed, meaning how often it was either downloaded or used as part of a compute job.
+     * @type {string}
+     */
+    consume: number
 
-  /**
-   * If asset is listed in purgatory and reason.
-   * @type {string}
-   */
-  isInPurgatory: string
-
-  /**
-   * Name of NFT set in contract.
-   * @type {AssetDatatoken}
-   */
-  dataTokenInfo: AssetDatatoken // To be removed
+    /**
+     * If asset is listed in purgatory and reason.
+     * @type {string}
+     */
+    isInPurgatory: string
+  }
 }
diff --git a/src/ddo/DDO.ts b/src/ddo/DDO.ts
index 465e4aab..8808b384 100644
--- a/src/ddo/DDO.ts
+++ b/src/ddo/DDO.ts
@@ -8,7 +8,7 @@ import { Credentials } from './Credentials'
  */
 export class DDO {
   /**
-   * Contexts used for validation..
+   * Contexts used for validation.
    * @type {string[]}
    */
   public '@context': string[]
diff --git a/src/ddo/Service.ts b/src/ddo/Service.ts
index 12922209..c5b447b7 100644
--- a/src/ddo/Service.ts
+++ b/src/ddo/Service.ts
@@ -89,6 +89,12 @@ export interface ServiceComputeOptions {
 }
 
 export interface Service {
+  /**
+   * Unique ID
+   * @type {string}
+   */
+  id: string
+
   /**
    * Type of service (access, compute, wss.
    * @type {string}
@@ -133,7 +139,7 @@ export interface Service {
 
   /**
    * If service is of typecompute, holds information about the compute-related privacy settings & resources.
-   * @type {string}
+   * @type {ServiceComputeOptions}
    */
   compute?: ServiceComputeOptions
 }