diff --git a/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java b/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java
index 0302e4f..035da29 100644
--- a/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java
+++ b/nearby/service/java/com/android/server/nearby/provider/ChreDiscoveryProvider.java
@@ -350,7 +350,10 @@
                                             DataElement.DataType.ACTION,
                                             new byte[]{(byte) filterResult.getIntent()}));
                         }
-
+                        if (filterResult.hasDiscoveryTimestamp()) {
+                            presenceDeviceBuilder.setDiscoveryTimestampMillis(
+                                    filterResult.getDiscoveryTimestamp());
+                        }
                         PublicCredential publicCredential =
                                 new PublicCredential.Builder(
                                         secretId,
diff --git a/nearby/service/proto/src/presence/blefilter.proto b/nearby/service/proto/src/presence/blefilter.proto
index e1bf455..01f16cb 100644
--- a/nearby/service/proto/src/presence/blefilter.proto
+++ b/nearby/service/proto/src/presence/blefilter.proto
@@ -115,6 +115,7 @@
   repeated DataElement data_element = 7;
   optional bytes ble_service_data = 8;
   optional ResultType result_type = 9;
+  optional uint64 discovery_timestamp = 10; // Timestamp when the device is discovered.
 }
 
 message BleFilterResults {
diff --git a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
index 6f035a9..1f727a7 100644
--- a/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
+++ b/nearby/tests/unit/src/com/android/server/nearby/provider/ChreDiscoveryProviderTest.java
@@ -262,6 +262,7 @@
                                 .setValue(ByteString.copyFrom(testData))
                                 .setValueLength(testData.length)
                         )
+                        .setDiscoveryTimestamp(1697765417070L)
                         .build();
         Blefilter.BleFilterResults results =
                 Blefilter.BleFilterResults.newBuilder().addResult(result).build();