diff --git a/server/app/com/xsn/explorer/data/TransactionDataHandler.scala b/server/app/com/xsn/explorer/data/TransactionDataHandler.scala
index 6334d71..f5b29b1 100644
--- a/server/app/com/xsn/explorer/data/TransactionDataHandler.scala
+++ b/server/app/com/xsn/explorer/data/TransactionDataHandler.scala
@@ -4,6 +4,7 @@ import com.alexitc.playsonify.core.ApplicationResult
 import com.alexitc.playsonify.models.{FieldOrdering, PaginatedQuery, PaginatedResult}
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
+import org.scalactic.Every
 
 import scala.language.higherKinds
 
@@ -21,7 +22,7 @@ trait TransactionDataHandler[F[_]] {
       paginatedQuery: PaginatedQuery,
       ordering: FieldOrdering[TransactionField]): F[PaginatedResult[TransactionWithValues]]
 
-  def getLatestTransactionBy(addresses: List[Address]): F[Map[String, String]]
+  def getLatestTransactionBy(addresses: Every[Address]): F[Map[String, String]]
 }
 
 trait TransactionBlockingDataHandler extends TransactionDataHandler[ApplicationResult]
diff --git a/server/app/com/xsn/explorer/data/anorm/TransactionPostgresDataHandler.scala b/server/app/com/xsn/explorer/data/anorm/TransactionPostgresDataHandler.scala
index 81cd29c..394a034 100644
--- a/server/app/com/xsn/explorer/data/anorm/TransactionPostgresDataHandler.scala
+++ b/server/app/com/xsn/explorer/data/anorm/TransactionPostgresDataHandler.scala
@@ -1,14 +1,13 @@
 package com.xsn.explorer.data.anorm
 
 import javax.inject.Inject
-
 import com.alexitc.playsonify.core.ApplicationResult
 import com.alexitc.playsonify.models.{FieldOrdering, PaginatedQuery, PaginatedResult}
 import com.xsn.explorer.data.TransactionBlockingDataHandler
 import com.xsn.explorer.data.anorm.dao.TransactionPostgresDAO
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
-import org.scalactic.Good
+import org.scalactic.{Every, Good}
 import play.api.db.Database
 
 class TransactionPostgresDataHandler @Inject() (
@@ -46,7 +45,7 @@ class TransactionPostgresDataHandler @Inject() (
     Good(result)
   }
 
-  def getLatestTransactionBy(addresses: List[Address]): ApplicationResult[Map[String, String]] = withConnection { implicit conn =>
+  def getLatestTransactionBy(addresses: Every[Address]): ApplicationResult[Map[String, String]] = withConnection { implicit conn =>
     val result = transactionPostgresDAO.getLatestTransactionBy(addresses)
 
     Good(result)
diff --git a/server/app/com/xsn/explorer/data/anorm/dao/TransactionPostgresDAO.scala b/server/app/com/xsn/explorer/data/anorm/dao/TransactionPostgresDAO.scala
index 081d8c0..ba8f9c8 100644
--- a/server/app/com/xsn/explorer/data/anorm/dao/TransactionPostgresDAO.scala
+++ b/server/app/com/xsn/explorer/data/anorm/dao/TransactionPostgresDAO.scala
@@ -1,14 +1,15 @@
 package com.xsn.explorer.data.anorm.dao
 
 import java.sql.Connection
-import javax.inject.Inject
 
+import javax.inject.Inject
 import anorm._
 import com.alexitc.playsonify.models.{Count, FieldOrdering, PaginatedQuery}
 import com.xsn.explorer.data.anorm.interpreters.FieldOrderingSQLInterpreter
 import com.xsn.explorer.data.anorm.parsers.TransactionParsers._
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
+import org.scalactic.Every
 
 class TransactionPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLInterpreter) {
 
@@ -184,7 +185,7 @@ class TransactionPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderi
     ).as(parseTransactionOutput.*).flatten
   }
 
-  def getLatestTransactionBy(addresses: List[Address])(implicit conn: Connection): Map[String, String] = {
+  def getLatestTransactionBy(addresses: Every[Address])(implicit conn: Connection): Map[String, String] = {
 
     import SqlParser._
 
@@ -202,7 +203,7 @@ class TransactionPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderi
         |HAVING address IN ({addresses});
       """.stripMargin
     ).on(
-      'addresses -> addresses.map(_.string)
+      'addresses -> addresses.map(_.string).toList
     ).as((str("address") ~ str("txid")).map(flatten).*)
 
     result.toMap
diff --git a/server/app/com/xsn/explorer/data/async/TransactionFutureDataHandler.scala b/server/app/com/xsn/explorer/data/async/TransactionFutureDataHandler.scala
index a12a6ef..8a0dc42 100644
--- a/server/app/com/xsn/explorer/data/async/TransactionFutureDataHandler.scala
+++ b/server/app/com/xsn/explorer/data/async/TransactionFutureDataHandler.scala
@@ -1,13 +1,13 @@
 package com.xsn.explorer.data.async
 
 import javax.inject.Inject
-
 import com.alexitc.playsonify.core.{FutureApplicationResult, FuturePaginatedResult}
 import com.alexitc.playsonify.models.{FieldOrdering, PaginatedQuery, PaginatedResult}
 import com.xsn.explorer.data.{TransactionBlockingDataHandler, TransactionDataHandler}
 import com.xsn.explorer.executors.DatabaseExecutionContext
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
+import org.scalactic.Every
 
 import scala.concurrent.Future
 
@@ -36,7 +36,7 @@ class TransactionFutureDataHandler @Inject() (
     blockingDataHandler.getByBlockhash(blockhash, paginatedQuery, ordering)
   }
 
-  override def getLatestTransactionBy(addresses: List[Address]): FutureApplicationResult[Map[String, String]] = Future {
+  override def getLatestTransactionBy(addresses: Every[Address]): FutureApplicationResult[Map[String, String]] = Future {
     blockingDataHandler.getLatestTransactionBy(addresses)
   }
 }
diff --git a/server/app/com/xsn/explorer/services/TransactionService.scala b/server/app/com/xsn/explorer/services/TransactionService.scala
index 3e1efcf..fa7200c 100644
--- a/server/app/com/xsn/explorer/services/TransactionService.scala
+++ b/server/app/com/xsn/explorer/services/TransactionService.scala
@@ -1,7 +1,6 @@
 package com.xsn.explorer.services
 
 import javax.inject.Inject
-
 import com.alexitc.playsonify.core.FutureOr.Implicits.{FutureListOps, FutureOps, OrOps}
 import com.alexitc.playsonify.core.{FutureApplicationResult, FuturePaginatedResult}
 import com.alexitc.playsonify.models.{OrderingQuery, PaginatedQuery}
@@ -11,7 +10,7 @@ import com.xsn.explorer.errors._
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.rpc.TransactionVIN
 import com.xsn.explorer.parsers.TransactionOrderingParser
-import org.scalactic.{Bad, Good, One, Or}
+import org.scalactic._
 import play.api.libs.json.{JsObject, JsString, JsValue}
 
 import scala.concurrent.{ExecutionContext, Future}
@@ -115,7 +114,7 @@ class TransactionService @Inject() (
     result.toFuture
   }
 
-  def getLatestTransactionBy(addresses: List[Address]): FutureApplicationResult[Map[String, String]] = {
+  def getLatestTransactionBy(addresses: Every[Address]): FutureApplicationResult[Map[String, String]] = {
     transactionFutureDataHandler.getLatestTransactionBy(addresses)
   }
 
diff --git a/server/app/controllers/TransactionsController.scala b/server/app/controllers/TransactionsController.scala
index 16351b1..1dc886f 100644
--- a/server/app/controllers/TransactionsController.scala
+++ b/server/app/controllers/TransactionsController.scala
@@ -1,18 +1,19 @@
 package controllers
 
 import javax.inject.Inject
-
 import com.alexitc.playsonify.models.PublicContextWithModel
 import com.xsn.explorer.models.Address
 import com.xsn.explorer.models.request.SendRawTransactionRequest
 import com.xsn.explorer.services.TransactionService
-import controllers.common.{MyJsonController, MyJsonControllerComponents}
+import controllers.common.{Codecs,MyJsonController, MyJsonControllerComponents}
+import org.scalactic.Every
 
 class TransactionsController @Inject() (
     transactionService: TransactionService,
     cc: MyJsonControllerComponents)
     extends MyJsonController(cc) {
 
+  import Codecs._
   def getTransaction(txid: String) = publicNoInput { _ =>
     transactionService.getTransactionDetails(txid)
   }
@@ -25,7 +26,7 @@ class TransactionsController @Inject() (
     transactionService.sendRawTransaction(ctx.model.hex)
   }
 
-  def getLatestByAddresses() = publicWithInput { ctx: PublicContextWithModel[List[Address]] =>
+  def getLatestByAddresses() = publicWithInput { ctx: PublicContextWithModel[Every[Address]] =>
     transactionService.getLatestTransactionBy(ctx.model)
   }
 }
diff --git a/server/app/controllers/common/Codecs.scala b/server/app/controllers/common/Codecs.scala
new file mode 100644
index 0000000..4346198
--- /dev/null
+++ b/server/app/controllers/common/Codecs.scala
@@ -0,0 +1,19 @@
+package controllers.common
+
+import org.scalactic.Every
+import play.api.libs.json._
+
+object Codecs {
+
+  implicit def everyReads[T](implicit readsT: Reads[T]): Reads[Every[T]] = Reads[Every[T]] { json =>
+    json
+      .validate[List[T]]
+      .flatMap { list =>
+        Every.from(list)
+          .map(JsSuccess.apply(_))
+          .getOrElse {
+            JsError.apply("A non-empty list is expected")
+          }
+      }
+  }
+}
\ No newline at end of file
diff --git a/server/test/com/xsn/explorer/data/TransactionPostgresDataHandlerSpec.scala b/server/test/com/xsn/explorer/data/TransactionPostgresDataHandlerSpec.scala
index ebbabfb..b0e2b71 100644
--- a/server/test/com/xsn/explorer/data/TransactionPostgresDataHandlerSpec.scala
+++ b/server/test/com/xsn/explorer/data/TransactionPostgresDataHandlerSpec.scala
@@ -11,7 +11,7 @@ import com.xsn.explorer.helpers.{BlockLoader, TransactionLoader}
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
 import com.xsn.explorer.models.rpc.Block
-import org.scalactic.{Good, One, Or}
+import org.scalactic.{Every, Good, One, Or}
 import org.scalatest.BeforeAndAfter
 
 class TransactionPostgresDataHandlerSpec extends PostgresDataHandlerSpec with BeforeAndAfter {
@@ -307,7 +307,7 @@ class TransactionPostgresDataHandlerSpec extends PostgresDataHandlerSpec with Be
         "XdJnCKYNwzCz8ATv8Eu75gonaHyfr9qXg9" -> "1e591eae200f719344fc5df0c4286e3fb191fb8a645bdf054f9b36a856fce41e"
       )
 
-      val addresses = List(
+      val addresses = Every(
         createAddress("XdJnCKYNwzCz8ATv8Eu75gonaHyfr9qXg9"),
         createAddress("XcqpUChZhNkVDgQqFF9U4DdewDGUMWwG53"),
         createAddress("XcqpUChZhNkVDgQqFF9U4DdewDGUMWwG54"),
diff --git a/server/test/com/xsn/explorer/helpers/TransactionDummyDataHandler.scala b/server/test/com/xsn/explorer/helpers/TransactionDummyDataHandler.scala
index 2f5f4c8..8d8b6c2 100644
--- a/server/test/com/xsn/explorer/helpers/TransactionDummyDataHandler.scala
+++ b/server/test/com/xsn/explorer/helpers/TransactionDummyDataHandler.scala
@@ -5,6 +5,7 @@ import com.alexitc.playsonify.models.{FieldOrdering, PaginatedQuery, PaginatedRe
 import com.xsn.explorer.data.TransactionBlockingDataHandler
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.fields.TransactionField
+import org.scalactic.Every
 
 class TransactionDummyDataHandler extends TransactionBlockingDataHandler {
 
@@ -14,5 +15,5 @@ class TransactionDummyDataHandler extends TransactionBlockingDataHandler {
 
   override def getByBlockhash(blockhash: Blockhash, paginatedQuery: PaginatedQuery, ordering: FieldOrdering[TransactionField]): ApplicationResult[PaginatedResult[TransactionWithValues]] = ???
 
-  override def getLatestTransactionBy(addresses: List[Address]): ApplicationResult[Map[String, String]] = ???
+  override def getLatestTransactionBy(addresses: Every[Address]): ApplicationResult[Map[String, String]] = ???
 }
diff --git a/server/test/controllers/TransactionsControllerSpec.scala b/server/test/controllers/TransactionsControllerSpec.scala
index 779d93a..ae9821d 100644
--- a/server/test/controllers/TransactionsControllerSpec.scala
+++ b/server/test/controllers/TransactionsControllerSpec.scala
@@ -1,16 +1,17 @@
 package controllers
 
 import com.alexitc.playsonify.PublicErrorRenderer
-import com.alexitc.playsonify.core.FutureApplicationResult
+import com.alexitc.playsonify.core.{ApplicationResult, FutureApplicationResult}
+import com.xsn.explorer.data.TransactionBlockingDataHandler
 import com.xsn.explorer.errors.TransactionNotFoundError
-import com.xsn.explorer.helpers.{DataHelper, DummyXSNService, TransactionLoader}
+import com.xsn.explorer.helpers.{DataHelper, DummyXSNService, TransactionDummyDataHandler, TransactionLoader}
 import com.xsn.explorer.models._
 import com.xsn.explorer.models.rpc.Transaction
 import com.xsn.explorer.services.XSNService
 import controllers.common.MyAPISpec
-import org.scalactic.{Bad, Good}
+import org.scalactic.{Bad, Every, Good}
 import play.api.inject.bind
-import play.api.libs.json.JsValue
+import play.api.libs.json.{JsValue, Json}
 import play.api.test.Helpers._
 
 import scala.concurrent.Future
@@ -23,6 +24,10 @@ class TransactionsControllerSpec extends MyAPISpec {
   val nonCoinbaseTx = TransactionLoader.get("0834641a7d30d8a2d2b451617599670445ee94ed7736e146c13be260c576c641")
   val nonCoinbasePreviousTx = TransactionLoader.get("585cec5009c8ca19e83e33d282a6a8de65eb2ca007b54d6572167703768967d9")
   val severalInputsTx = TransactionLoader.get("a3c43d22bbba31a6e5c00f565cb9c5a1a365407df4cc90efa8a865656b52c0eb")
+  val firstAddress = createAddress("fygsydgfygsdyfgsdyg")
+  val secondAddress = createAddress("56wedf5wedweedw")
+  val firstTxId = DataHelper.createTransactionId("a3c43d223658a8656a31a6e5c407df4bbb0f565cb9c5a1acc90efa056b52c0eb")
+  val secondTxId = DataHelper.createTransactionId("8a865656b5a3c43d22b00f565cb9c5a1a3bba31a6e5c65407df4cc90efa2c0eb")
 
   val customXSNService = new DummyXSNService {
     val map = Map(
@@ -54,9 +59,23 @@ class TransactionsControllerSpec extends MyAPISpec {
     }
   }
 
+  val transactionDataHandler = new TransactionDummyDataHandler {
+
+    val map: Map[Address, TransactionId] = Map(firstAddress -> firstTxId, secondAddress -> secondTxId)
+
+    override def getLatestTransactionBy(addresses: Every[Address]): ApplicationResult[Map[String, String]] = {
+      val result = map
+        .filterKeys(addresses contains _)
+        .map( x => x._1.string -> x._2.string )
+
+      Good(result)
+    }
+  }
+
   override val application = guiceApplicationBuilder
-      .overrides(bind[XSNService].to(customXSNService))
-      .build()
+    .overrides(bind[XSNService].to(customXSNService))
+    .overrides(bind[TransactionBlockingDataHandler].to(transactionDataHandler))
+    .build()
 
   "GET /transactions/:txid" should {
     def url(txid: String) = s"/transactions/$txid"
@@ -205,4 +224,39 @@ class TransactionsControllerSpec extends MyAPISpec {
       json mustEqual expected
     }
   }
+
+  "POST /transactions/latest" should {
+    def url = s"/transactions/latest"
+
+    "return the latest transactions for the addresses" in {
+
+      val body = List(firstAddress.string, secondAddress.string, "3rdaddress")
+        .map(x => s""" "$x" """)
+        .mkString("[", ",", "]")
+      val expected = Json.obj(firstAddress.string -> firstTxId, secondAddress.string -> secondTxId)
+
+      val response = POST(url, Some(body))
+
+      status(response) mustEqual OK
+      val json = contentAsJson(response)
+      json mustEqual expected
+    }
+
+    "fail while passing no addresses" in {
+      val body = """[]"""
+      val response = POST(url, Some(body))
+
+      status(response) mustEqual BAD_REQUEST
+
+      val json = contentAsJson(response)
+      val errorList = (json \ "errors").as[List[JsValue]]
+
+      errorList.size mustEqual 1
+      val error = errorList.head
+
+      (error \ "type").as[String] mustEqual PublicErrorRenderer.FieldValidationErrorType
+      (error \ "field").as[String].nonEmpty mustEqual false
+      (error \ "message").as[String].nonEmpty mustEqual true
+    }
+  }
 }