diff --git a/api/src/main/java/io/minio/MinioAsyncClient.java b/api/src/main/java/io/minio/MinioAsyncClient.java
index c9c105f81..715559b09 100644
--- a/api/src/main/java/io/minio/MinioAsyncClient.java
+++ b/api/src/main/java/io/minio/MinioAsyncClient.java
@@ -532,7 +532,8 @@ public CompletableFuture<ObjectWriteResponse> copyObject(CopyObjectArgs args)
                                 args.region(),
                                 args.object(),
                                 result.etag(),
-                                response.header("x-amz-version-id"));
+                                response.header("x-amz-version-id"),
+                                result);
                           } catch (XmlParserException e) {
                             throw new CompletionException(e);
                           } finally {
diff --git a/api/src/main/java/io/minio/ObjectWriteResponse.java b/api/src/main/java/io/minio/ObjectWriteResponse.java
index 1083a1252..b9ba17834 100644
--- a/api/src/main/java/io/minio/ObjectWriteResponse.java
+++ b/api/src/main/java/io/minio/ObjectWriteResponse.java
@@ -16,18 +16,68 @@
 
 package io.minio;
 
+import io.minio.messages.CompleteMultipartUploadOutput;
+import io.minio.messages.CopyObjectResult;
 import okhttp3.Headers;
 
 /** Response class of any APIs doing object creation. */
 public class ObjectWriteResponse extends GenericResponse {
   private String etag;
   private String versionId;
+  private String checksumCRC32;
+  private String checksumCRC32C;
+  private String checksumSHA1;
+  private String checksumSHA256;
 
   public ObjectWriteResponse(
       Headers headers, String bucket, String region, String object, String etag, String versionId) {
     super(headers, bucket, region, object);
     this.etag = etag;
     this.versionId = versionId;
+    if (headers != null) {
+      this.checksumCRC32 = headers.get("x-amz-checksum-crc32");
+      this.checksumCRC32C = headers.get("x-amz-checksum-crc32c");
+      this.checksumSHA1 = headers.get("x-amz-checksum-sha1");
+      this.checksumSHA256 = headers.get("x-amz-checksum-sha256");
+    }
+  }
+
+  public ObjectWriteResponse(
+      Headers headers,
+      String bucket,
+      String region,
+      String object,
+      String etag,
+      String versionId,
+      CopyObjectResult result) {
+    super(headers, bucket, region, object);
+    this.etag = etag;
+    this.versionId = versionId;
+    if (result != null) {
+      this.checksumCRC32 = result.checksumCRC32();
+      this.checksumCRC32C = result.checksumCRC32C();
+      this.checksumSHA1 = result.checksumSHA1();
+      this.checksumSHA256 = result.checksumSHA256();
+    }
+  }
+
+  public ObjectWriteResponse(
+      Headers headers,
+      String bucket,
+      String region,
+      String object,
+      String etag,
+      String versionId,
+      CompleteMultipartUploadOutput result) {
+    super(headers, bucket, region, object);
+    this.etag = etag;
+    this.versionId = versionId;
+    if (result != null) {
+      this.checksumCRC32 = result.checksumCRC32();
+      this.checksumCRC32C = result.checksumCRC32C();
+      this.checksumSHA1 = result.checksumSHA1();
+      this.checksumSHA256 = result.checksumSHA256();
+    }
   }
 
   public String etag() {
@@ -37,4 +87,20 @@ public String etag() {
   public String versionId() {
     return versionId;
   }
+
+  public String checksumCRC32() {
+    return checksumCRC32;
+  }
+
+  public String checksumCRC32C() {
+    return checksumCRC32C;
+  }
+
+  public String checksumSHA1() {
+    return checksumSHA1;
+  }
+
+  public String checksumSHA256() {
+    return checksumSHA256;
+  }
 }
diff --git a/api/src/main/java/io/minio/S3Base.java b/api/src/main/java/io/minio/S3Base.java
index c9adc8a71..91dba0e7f 100644
--- a/api/src/main/java/io/minio/S3Base.java
+++ b/api/src/main/java/io/minio/S3Base.java
@@ -2015,7 +2015,8 @@ public CompletableFuture<ObjectWriteResponse> completeMultipartUploadAsync(
                         result.location(),
                         result.object(),
                         result.etag(),
-                        response.header("x-amz-version-id"));
+                        response.header("x-amz-version-id"),
+                        result);
                   } catch (XmlParserException e) {
                     // As this CompleteMultipartUpload REST call succeeded, just log it.
                     Logger.getLogger(S3Base.class.getName())
diff --git a/api/src/main/java/io/minio/messages/CopyObjectResult.java b/api/src/main/java/io/minio/messages/CopyObjectResult.java
index 53b0b795e..107f99ebf 100644
--- a/api/src/main/java/io/minio/messages/CopyObjectResult.java
+++ b/api/src/main/java/io/minio/messages/CopyObjectResult.java
@@ -35,6 +35,18 @@ public class CopyObjectResult {
   @Element(name = "LastModified")
   private ResponseDate lastModified;
 
+  @Element(name = "ChecksumCRC32", required = false)
+  private String checksumCRC32;
+
+  @Element(name = "ChecksumCRC32C", required = false)
+  private String checksumCRC32C;
+
+  @Element(name = "ChecksumSHA1", required = false)
+  private String checksumSHA1;
+
+  @Element(name = "ChecksumSHA256", required = false)
+  private String checksumSHA256;
+
   public CopyObjectResult() {}
 
   /** Returns ETag of the object. */
@@ -46,4 +58,20 @@ public String etag() {
   public ZonedDateTime lastModified() {
     return lastModified.zonedDateTime();
   }
+
+  public String checksumCRC32() {
+    return checksumCRC32;
+  }
+
+  public String checksumCRC32C() {
+    return checksumCRC32C;
+  }
+
+  public String checksumSHA1() {
+    return checksumSHA1;
+  }
+
+  public String checksumSHA256() {
+    return checksumSHA256;
+  }
 }