diff --git a/contracts/Constants.sol b/contracts/Constants.sol
index d220789..276d411 100644
--- a/contracts/Constants.sol
+++ b/contracts/Constants.sol
@@ -33,20 +33,22 @@ library OIDs {
     // Decent OIDs
     //   Root OIDs
     bytes32 constant OID_DECENT_EXT_VER =
-        0x6982f5c89a94ffdfaaab8591c1b5f7c2f782b01e010000000000000000000000;
+        0x2B0601040183E445010000000000000000000000000000000000000000000000;
     bytes32 constant OID_DECENT_PLATFORM_TYPE  =
-        0x6982f5c89a94ffdfaaab8591c1b5f7c2f782b01e020000000000000000000000;
+        0x2B0601040183E445020000000000000000000000000000000000000000000000;
     bytes32 constant OID_DECENT_HASHED_KEYS  =
-        0x6982f5c89a94ffdfaaab8591c1b5f7c2f782b01e040000000000000000000000;
+        0x2B0601040183E445040000000000000000000000000000000000000000000000;
     bytes32 constant OID_DECENT_APP_HASH  =
-        0x6982f5c89a94ffdfaaab8591c1b5f7c2f782b01e050000000000000000000000;
+        0x2B0601040183E445050000000000000000000000000000000000000000000000;
     bytes32 constant OID_DECENT_AUTH_LIST  =
-        0x6982f5c89a94ffdfaaab8591c1b5f7c2f782b01e060000000000000000000000;
+        0x2B0601040183E445060000000000000000000000000000000000000000000000;
+    bytes32 constant OID_DECENT_PLATFORM_ID  =
+        0x2B0601040183E445070000000000000000000000000000000000000000000000;
     //   Platform specific OIDs
     bytes32 constant OID_DECENT_STD_REP_DATA =
-        0x6982f5c89a94ffdfaaab8591c1b5f7c2f782b01e030101000000000000000000;
+        0x2B0601040183E445030101000000000000000000000000000000000000000000;
     bytes32 constant OID_DECENT_ATTESTATION  =
-        0x6982f5c89a94ffdfaaab8591c1b5f7c2f782b01e030102000000000000000000;
+        0x2B0601040183E445030102000000000000000000000000000000000000000000;
 }
 
 library Names {
diff --git a/contracts/DecentServerCert.sol b/contracts/DecentServerCert.sol
index b7b87d4..43549ad 100644
--- a/contracts/DecentServerCert.sol
+++ b/contracts/DecentServerCert.sol
@@ -270,12 +270,13 @@ library DecentServerCert {
 
         // extracting extensions
         X509Extension.ExtEntry[] memory extEntries =
-            new X509Extension.ExtEntry[](5);
+            new X509Extension.ExtEntry[](6);
         extEntries[0].extnID = OIDs.OID_DECENT_EXT_VER;
         extEntries[1].extnID = OIDs.OID_DECENT_PLATFORM_TYPE;
         extEntries[2].extnID = OIDs.OID_DECENT_HASHED_KEYS;
         extEntries[3].extnID = OIDs.OID_DECENT_STD_REP_DATA;
         extEntries[4].extnID = OIDs.OID_DECENT_ATTESTATION;
+        extEntries[5].extnID = OIDs.OID_DECENT_PLATFORM_ID;
 
         X509Extension.extractNeededExtensions(
             certDer,
@@ -316,6 +317,10 @@ library DecentServerCert {
             require(false, "Unsupported platform");
         }
 
+        // Platform ID
+        require(extEntries[5].isParsed, "Platform ID not found");
+        cert.platformId = extEntries[5].extnValue.readBytes32(0);
+
         // Decent server public key
         extractDecentServerKey(cert, certNodes, certDer, keyRing);