From 2dcc7eb9b8ab91a03bd2cb18b64d7a95b9069eb8 Mon Sep 17 00:00:00 2001
From: Anamaria Loznianu <ana@oceanprotocol.com>
Date: Tue, 4 Oct 2022 14:26:15 +0300
Subject: [PATCH] Added GraphQL & On-Chain as objects supported

---
 core-concepts/did-ddo.md | 79 +++++++++++++++++++++++++++++-----------
 1 file changed, 57 insertions(+), 22 deletions(-)

diff --git a/core-concepts/did-ddo.md b/core-concepts/did-ddo.md
index 33a7a2b2..c20d1cf8 100644
--- a/core-concepts/did-ddo.md
+++ b/core-concepts/did-ddo.md
@@ -219,39 +219,74 @@ During the publish process, file URLs must be encrypted with a respective _Provi
 
 where "files" contains one or more storage objects.
 
-Type of objects supported :
+**Type of objects supported:**
 
-| Type  | Description                              | Example                                                           |
-| ----- | ---------------------------------------- | ----------------------------------------------------------------- |
-| `url` | Static URL. Contains url and HTTP method | <pre class="language-json"><code class="lang-json">[</code></pre> |
-| {     |                                          |                                                                   |
+***`URL`***
+
+Static URL. Contains url and HTTP method.
 
 ```
-"type": "url",
-"url": "https://url.com/file1.csv",
-"method": "GET",
-"headers":
-  [
-   {"Authorization": "Bearer 123"}, 
-   {"APIKEY": "124"},
-  ]
+{
+    "type": "url",
+    "url": "https://url.com/file1.csv",
+    "method": "GET",
+    "headers":
+    [
+        {"Authorization": "Bearer 123"}, 
+        {"APIKEY": "124"},
+    ]
+}
 ```
 
-} ] |
 
-First class integrations supported in the future :
+***`IPFS`***
 
-| Type   | Description | Example                                                           |
-| ------ | ----------- | ----------------------------------------------------------------- |
-| `ipfs` | IPFS files  | <pre class="language-json"><code class="lang-json">[</code></pre> |
-| {      |             |                                                                   |
+IPFS files.
 
 ```
-"type": "ipfs",
-"hash": "XXX"
+{
+	"type": "ipfs",
+	"hash": "XXX"
+}
 ```
 
-} ] | | `filecoin` | Filecoin storage | | | `arwave` | Arwave | | | `storj` | Storj | | | `sql` | Sql connection, dataset is generated by a query | |
+***`GraphQL`*** 
+
+Use GraphQL querys as datasource.
+
+```
+{
+  "type": "graphql",    
+	"url": "http://172.15.0.15:8000/subgraphs/name/oceanprotocol/ocean-subgraph",
+  "query": """
+    	query{
+            nfts(orderBy: createdTimestamp,orderDirection:desc){
+                 id
+                 symbol
+                 createdTimestamp
+            }
+           }
+		  """
+}
+```
+
+***`On-Chain`*** 
+
+Use a smart contract as datasource.
+
+```
+{
+	"type": "smartcontract",
+	"address": "0x8149276f275EEFAc110D74AFE8AFECEaeC7d1593",
+	"abi": {
+			"inputs": [],
+			"name": "swapOceanFee",
+			"outputs": [{"internalType": "uint256", "name": "", "type": "uint256"}],
+			"stateMutability": "view",
+			"type": "function",
+		}
+}
+```
 
 A service can contain multiple files, using multiple storage types.