diff --git a/src/main/scala/com/fluency03/blockchain/api/actors/BlocksActor.scala b/src/main/scala/com/fluency03/blockchain/api/actors/BlocksActor.scala
index 8e16726..ce03d09 100644
--- a/src/main/scala/com/fluency03/blockchain/api/actors/BlocksActor.scala
+++ b/src/main/scala/com/fluency03/blockchain/api/actors/BlocksActor.scala
@@ -9,6 +9,7 @@ import scala.collection.mutable
 
 object BlocksActor {
   final case object GetBlocks
+  final case class GetBlocks(hashes: Set[String])
   final case class CreateBlock(block: Block)
   final case class GetBlock(hash: String)
   final case class DeleteBlock(hash: String)
@@ -29,6 +30,7 @@ class BlocksActor extends ActorSupport {
 
   def receive: Receive = {
     case GetBlocks => onGetBlocks()
+    case GetBlocks(hashes) => onGetBlocks(hashes)
     case CreateBlock(block) => onCreateBlock(block)
     case GetBlock(hash) => onGetBlock(hash)
     case DeleteBlock(hash) => onDeleteBlock(hash)
@@ -45,6 +47,9 @@ class BlocksActor extends ActorSupport {
    */
 
   private[this] def onGetBlocks(): Unit = sender() ! blocks.values.toSeq
+  private[this] def onGetBlocks(hashes: Set[String]): Unit = sender() ! blocks.filterKeys(
+    k => hashes.contains(k)
+  ).values.toSeq
 
   private[this] def onCreateBlock(block: Block): Unit = {
     if (blocks.contains(block.hash)) sender() ! FailureMsg(s"Block ${block.hash} already exists.")
diff --git a/src/main/scala/com/fluency03/blockchain/api/routes/BlockRoutes.scala b/src/main/scala/com/fluency03/blockchain/api/routes/BlockRoutes.scala
index 6e36ac1..d3b1351 100644
--- a/src/main/scala/com/fluency03/blockchain/api/routes/BlockRoutes.scala
+++ b/src/main/scala/com/fluency03/blockchain/api/routes/BlockRoutes.scala
@@ -7,6 +7,7 @@ import akka.http.scaladsl.server.Route
 import akka.http.scaladsl.server.directives.MethodDirectives.{delete, get, post}
 import akka.http.scaladsl.server.directives.PathDirectives.path
 import akka.http.scaladsl.server.directives.RouteDirectives.complete
+import akka.http.scaladsl.unmarshalling.PredefinedFromStringUnmarshallers.CsvSeq
 import akka.pattern.ask
 import com.fluency03.blockchain.api.{Blocks, Message}
 import com.fluency03.blockchain.api.actors.BlocksActor._
@@ -30,8 +31,10 @@ trait BlockRoutes extends RoutesSupport {
 
   lazy val blockRoutes: Route =
     path(BLOCKS) {
-      get {
-        val blocks: Future[Blocks] = (blocksActor ? GetBlocks).mapTo[Blocks]
+      parameters( 'hashes.as(CsvSeq[String]) ? ) { hashes =>
+        val blocks: Future[Blocks] =
+          if (hashes.isDefined) (blocksActor ? GetBlocks(hashes.get.toSet)).mapTo[Blocks]
+          else (blocksActor ? GetBlocks).mapTo[Blocks]
         complete(blocks)
       }
     } ~
diff --git a/src/test/scala/com/fluency03/blockchain/api/actors/BlocksActorTest.scala b/src/test/scala/com/fluency03/blockchain/api/actors/BlocksActorTest.scala
index 958751c..ee51ed5 100644
--- a/src/test/scala/com/fluency03/blockchain/api/actors/BlocksActorTest.scala
+++ b/src/test/scala/com/fluency03/blockchain/api/actors/BlocksActorTest.scala
@@ -23,6 +23,9 @@ class BlocksActorTest extends TestKit(ActorSystem("BlocksActorTest")) with Impli
       blocksActor ! GetBlocks
       expectMsg(Seq.empty[Block])
 
+      blocksActor ! GetBlocks(Set("somehash"))
+      expectMsg(Seq.empty[Block])
+
       blocksActor ! CreateBlock(Block.genesisBlock)
       expectMsg(SuccessMsg(s"Block ${Block.genesisBlock.hash} created."))
 
@@ -32,6 +35,12 @@ class BlocksActorTest extends TestKit(ActorSystem("BlocksActorTest")) with Impli
       blocksActor ! GetBlocks
       expectMsg(Seq(Block.genesisBlock))
 
+      blocksActor ! GetBlocks(Set("somehash"))
+      expectMsg(Seq.empty[Block])
+
+      blocksActor ! GetBlocks(Set(Block.genesisBlock.hash))
+      expectMsg(Seq(Block.genesisBlock))
+
       blocksActor ! GetBlock(Block.genesisBlock.hash)
       expectMsg(Some(Block.genesisBlock))