diff --git a/build.sbt b/build.sbt
index 61e040f..c727636 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 name := "encry-common"
 
-version := "0.1.5"
+version := "0.2.1"
 
 scalaVersion := "2.12.6"
 
@@ -16,13 +16,11 @@ val circeVersion = "0.9.3"
 val apiDependencies = Seq(
   "io.circe" %% "circe-core" % circeVersion,
   "io.circe" %% "circe-generic" % circeVersion,
-  "io.circe" %% "circe-parser" % circeVersion,
+  "io.circe" %% "circe-parser" % circeVersion
 )
 
 libraryDependencies ++= Seq(
-  "com.google.guava" % "guava" % "21.+",
-  "org.scorexfoundation" %% "scrypto" % "2.1.+",
-  "org.encry" %% "prism" % "0.2.7",
+  "org.encry" %% "prism" % "0.3.0",
   "org.scalatest" %% "scalatest" % "3.0.3" % "test"
 ) ++ apiDependencies
 
diff --git a/src/main/scala/org/encryfoundation/common/Algos.scala b/src/main/scala/org/encryfoundation/common/Algos.scala
index 11ead11..818989f 100644
--- a/src/main/scala/org/encryfoundation/common/Algos.scala
+++ b/src/main/scala/org/encryfoundation/common/Algos.scala
@@ -1,9 +1,9 @@
 package org.encryfoundation.common
 
 import java.nio.charset.Charset
+import org.encryfoundation.utils.encoding.Base16
 import scorex.crypto.authds.LeafData
 import scorex.crypto.authds.merkle.MerkleTree
-import scorex.util.encode.Base16
 import scorex.crypto.hash.{Blake2b256, Digest32}
 import scala.util.Try
 
@@ -11,9 +11,9 @@ object Algos {
 
   type HF = Blake2b256.type
 
-  def encode(bytes: Array[Byte]): String = encoder.encode(bytes)
+  def encode(bytes: Array[Byte]): String = Base16.encode(bytes)
 
-  def decode(str: String): Try[Array[Byte]] = encoder.decode(str)
+  def decode(str: String): Try[Array[Byte]] = Base16.decode(str)
 
   val hash: HF = Blake2b256
 
diff --git a/src/main/scala/org/encryfoundation/common/crypto/PrivateKey25519.scala b/src/main/scala/org/encryfoundation/common/crypto/PrivateKey25519.scala
index 2a2b8b0..7de66da 100644
--- a/src/main/scala/org/encryfoundation/common/crypto/PrivateKey25519.scala
+++ b/src/main/scala/org/encryfoundation/common/crypto/PrivateKey25519.scala
@@ -3,7 +3,6 @@ package org.encryfoundation.common.crypto
 import com.google.common.primitives.Bytes
 import org.encryfoundation.common.serialization.{BytesSerializable, Serializer}
 import scorex.crypto.signatures.{Curve25519, PrivateKey, PublicKey}
-
 import scala.util.Try
 
 trait SecretWrapper extends BytesSerializable
diff --git a/src/main/scala/org/encryfoundation/common/crypto/encoding/Base58Check.scala b/src/main/scala/org/encryfoundation/common/crypto/encoding/Base58Check.scala
deleted file mode 100644
index a391476..0000000
--- a/src/main/scala/org/encryfoundation/common/crypto/encoding/Base58Check.scala
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.encryfoundation.common.crypto.encoding
-
-import scorex.util.encode.Base58
-import scorex.crypto.hash.Blake2b256
-
-import scala.util.{Failure, Success, Try}
-
-object Base58Check {
-
-  val Version: Byte = 1
-  val ChecksumLength: Int = 4
-
-  private def getChecksum(bytes: Array[Byte]): Array[Byte] = Blake2b256.hash(bytes).take(ChecksumLength)
-
-  def encode(input: Array[Byte]): String = Base58.encode((Version +: input) ++ getChecksum(input))
-
-  def decode(input: String): Try[Array[Byte]] = Base58.decode(input).flatMap { bytes =>
-    val checksum: Array[Byte] = bytes.takeRight(ChecksumLength)
-    val checksumActual: Array[Byte] = getChecksum(bytes.dropRight(ChecksumLength).tail)
-
-    if (checksum.sameElements(checksumActual)) Success(bytes.dropRight(ChecksumLength).tail)
-    else Failure(new Exception("Wrong checksum"))
-  }
-}
diff --git a/src/main/scala/org/encryfoundation/common/transaction/EncryAddress.scala b/src/main/scala/org/encryfoundation/common/transaction/EncryAddress.scala
index 48ad28a..8c2e891 100644
--- a/src/main/scala/org/encryfoundation/common/transaction/EncryAddress.scala
+++ b/src/main/scala/org/encryfoundation/common/transaction/EncryAddress.scala
@@ -1,10 +1,9 @@
 package org.encryfoundation.common.transaction
 
-import org.encryfoundation.common.crypto.encoding.Base58Check
 import org.encryfoundation.common.transaction.EncryAddress.Address
 import org.encryfoundation.prismlang.compiler.CompiledContract.ContractHash
+import org.encryfoundation.utils.encoding.Base58Check
 import scorex.crypto.signatures.PublicKey
-
 import scala.util.Try
 
 sealed trait EncryAddress {
diff --git a/src/main/scala/org/encryfoundation/common/utils/Mnemonic.scala b/src/main/scala/org/encryfoundation/common/utils/Mnemonic.scala
new file mode 100644
index 0000000..61b5d7a
--- /dev/null
+++ b/src/main/scala/org/encryfoundation/common/utils/Mnemonic.scala
@@ -0,0 +1,24 @@
+package org.encryfoundation.common.utils
+
+import org.encryfoundation.common.Algos
+import scodec.bits.BitVector
+import scala.io.Source
+
+object Mnemonic {
+
+  private def getWords(language: String = "english"): Array[String] = Source
+    .fromFile("src/main/resources/languages/" + language + "/words.txt").getLines.toArray
+
+  def seedFromMnemonic(mnemonicCode: String, passPhrase: String = ""): Array[Byte] =
+    Algos.hash(mnemonicCode + "mnemonic=" + passPhrase)
+
+  def entropyToMnemonicCode(entropy: Array[Byte]): String = {
+    val words: Array[String] = getWords()
+    val checkSum: BitVector = BitVector(Algos.hash(entropy))
+    val entropyWithCheckSum: BitVector = BitVector(entropy) ++ checkSum.take(4)
+
+    entropyWithCheckSum.grouped(11).map { i =>
+      words(i.toInt(signed = false))
+    }.mkString(" ")
+  }
+}
\ No newline at end of file
diff --git a/src/test/scala/org/encryfoundation/common/crypto/encoding/Base58CheckSpec.scala b/src/test/scala/org/encryfoundation/common/crypto/encoding/Base58CheckSpec.scala
deleted file mode 100644
index a2d166a..0000000
--- a/src/test/scala/org/encryfoundation/common/crypto/encoding/Base58CheckSpec.scala
+++ /dev/null
@@ -1,20 +0,0 @@
-package org.encryfoundation.common.crypto.encoding
-
-import org.scalatest.{Matchers, PropSpec}
-import scorex.utils.Random
-
-class Base58CheckSpec extends PropSpec with Matchers {
-
-  private val iData = Random.randomBytes()
-
-  property("encode/decode") {
-
-    val dEncoded = Base58Check.encode(iData)
-
-    val dDecoded = Base58Check.decode(dEncoded)
-
-    dDecoded.isSuccess shouldBe true
-
-    iData sameElements dDecoded.get shouldBe true
-  }
-}
diff --git a/src/test/scala/org/encryfoundation/common/transaction/EncryAddressSpec.scala b/src/test/scala/org/encryfoundation/common/transaction/EncryAddressSpec.scala
index a86d178..910f9f2 100644
--- a/src/test/scala/org/encryfoundation/common/transaction/EncryAddressSpec.scala
+++ b/src/test/scala/org/encryfoundation/common/transaction/EncryAddressSpec.scala
@@ -1,7 +1,7 @@
 package org.encryfoundation.common.transaction
 
-import org.encryfoundation.common.crypto.encoding.Base58Check
 import org.encryfoundation.common.transaction.EncryAddress.Address
+import org.encryfoundation.utils.encoding.Base58Check
 import org.scalatest.{Matchers, PropSpec}
 import scorex.util.encode.Base58
 import scorex.crypto.signatures.{Curve25519, PublicKey}