diff --git a/core-test/src/test/scala/org/bitcoins/core/crypto/ECPublicKeyTest.scala b/core-test/src/test/scala/org/bitcoins/core/crypto/ECPublicKeyTest.scala
index 4fce2f344c..5126378ee5 100644
--- a/core-test/src/test/scala/org/bitcoins/core/crypto/ECPublicKeyTest.scala
+++ b/core-test/src/test/scala/org/bitcoins/core/crypto/ECPublicKeyTest.scala
@@ -1,61 +1,12 @@
 package org.bitcoins.core.crypto
 
-import org.bitcoinj.core.Sha256Hash
 import org.bitcoins.testkit.core.gen.CryptoGenerators
 import org.bitcoins.testkit.util.BitcoinSUnitTest
 import org.scalatest.prop.PropertyChecks
-import org.scalatest.{FlatSpec, MustMatchers}
 import scodec.bits._
 
 class ECPublicKeyTest extends BitcoinSUnitTest {
 
-  "ECPublicKey" must "verify that a arbitrary piece of data was signed by the private key corresponding to a public key" in {
-
-    val privateKeyHex =
-      "180cb41c7c600be951b5d3d0a7334acc7506173875834f7a6c4c786a28fcbb19"
-    val key: ECPrivateKey = ECPrivateKey(privateKeyHex)
-
-    val hash = DoubleSha256Digest(ByteVector(Sha256Hash.ZERO_HASH.getBytes))
-    val signature: ECDigitalSignature = key.sign(hash)
-
-    val isValid: Boolean =
-      key.publicKey.verify(ByteVector(Sha256Hash.ZERO_HASH.getBytes), signature)
-    isValid must be(true)
-  }
-
-  it must "fail to verify a piece of data if the wrong public key is given" in {
-    val privateKeyHex =
-      "180cb41c7c600be951b5d3d0a7334acc7506173875834f7a6c4c786a28fcbb19"
-    val key: ECPrivateKey = ECPrivateKey(privateKeyHex)
-    val hash = DoubleSha256Digest(ByteVector(Sha256Hash.ZERO_HASH.getBytes))
-    val signature: ECDigitalSignature = key.sign(hash)
-
-    val wrongPublicKey = ECPublicKey.freshPublicKey
-    val isValid: Boolean = wrongPublicKey.verify(hash, signature)
-    isValid must be(false)
-  }
-
-  it must "verify a piece of data signed with a bitcoinj private key" in {
-    val bitcoinjPrivKey = new org.bitcoinj.core.ECKey
-    val bitcoinjSignature = bitcoinjPrivKey.sign(Sha256Hash.ZERO_HASH)
-    val bitcoinsSignature =
-      ECDigitalSignature(ByteVector(bitcoinjSignature.encodeToDER()))
-    val bitcoinsPublicKey = ECPublicKey(ByteVector(bitcoinjPrivKey.getPubKey))
-    bitcoinsPublicKey.verify(ByteVector(Sha256Hash.ZERO_HASH.getBytes),
-                             bitcoinsSignature) must be(true)
-
-  }
-
-  it must "verify a piece of data was signed with a bitcoins private key inside of bitcoinj" in {
-    val bitcoinsPrivKey = ECPrivateKey.freshPrivateKey
-    val hash = DoubleSha256Digest(ByteVector(Sha256Hash.ZERO_HASH.getBytes))
-    val bitcoinsSignature = bitcoinsPrivKey.sign(hash)
-    val bitcoinjPublicKey = org.bitcoinj.core.ECKey
-      .fromPublicOnly(bitcoinsPrivKey.publicKey.bytes.toArray)
-    bitcoinjPublicKey.verify(Sha256Hash.ZERO_HASH.getBytes,
-                             bitcoinsSignature.bytes.toArray) must be(true)
-  }
-
   it must "be able to decompress keys" in {
     val uncompressed =
       ECPublicKey(
diff --git a/core-test/src/test/scala/org/bitcoins/core/crypto/TransactionSignatureSerializerTest.scala b/core-test/src/test/scala/org/bitcoins/core/crypto/TransactionSignatureSerializerTest.scala
index 640f342bfe..d0947a7636 100644
--- a/core-test/src/test/scala/org/bitcoins/core/crypto/TransactionSignatureSerializerTest.scala
+++ b/core-test/src/test/scala/org/bitcoins/core/crypto/TransactionSignatureSerializerTest.scala
@@ -18,8 +18,6 @@ import scala.util.Try
 class TransactionSignatureSerializerTest extends FlatSpec with MustMatchers {
   private def logger = BitcoinSLogger.logger
 
-  val scriptPubKey =
-    BitcoinjConversions.toScriptPubKey(BitcoinJTestUtil.multiSigScript)
   "TransactionSignatureSerializer" must "correctly serialize an input that is being checked where another input in the same tx is using SIGHASH_ANYONECANPAY" in {
     //this is from a test case inside of tx_valid.json
     //https://github.com/bitcoin/bitcoin/blob/master/src/test/data/tx_valid.json#L91
diff --git a/core-test/src/test/scala/org/bitcoins/core/util/Base58Test.scala b/core-test/src/test/scala/org/bitcoins/core/util/Base58Test.scala
index 60ab1749f3..4b1b68a8e8 100644
--- a/core-test/src/test/scala/org/bitcoins/core/util/Base58Test.scala
+++ b/core-test/src/test/scala/org/bitcoins/core/util/Base58Test.scala
@@ -28,12 +28,6 @@ class Base58Test extends FlatSpec with MustMatchers {
     Base58.decode("Z").head must be(32.toByte)
   }
 
-  it must "decode and return same result as bitcoinj" in {
-    val address = "1AGNa15ZQXAZUgFiqJ2i7Z2DPU2J6hW62i"
-    val bitcoinj = org.bitcoinj.core.Base58.decode(address)
-    Base58.decode(address).toArray must be(bitcoinj)
-  }
-
   it must "encode tests in base58_encode_decode.json" in {
     Base58.encode("") must be("")
     Base58.encode("61") must be("2g")
@@ -69,25 +63,6 @@ class Base58Test extends FlatSpec with MustMatchers {
     decodedBase58EncodeToHex("1111111111") must be("00000000000000000000")
   }
 
-  it must "decode address into bytes, then encode bytes back to address the same as bitcoinj" in {
-    //1C4kYhyLftmkn48YarSoLupxHfYFo8kp64
-    val address = TestUtil.bitcoinAddress.get.value
-    val bitcoinj =
-      org.bitcoinj.core.Base58.encode(org.bitcoinj.core.Base58.decode(address))
-    Base58.encode(Base58.decode(address)) must be(bitcoinj)
-    Base58.encode(Base58.decode(address)) must be(
-      "1C4kYhyLftmkn48YarSoLupxHfYFo8kp64")
-  }
-
-  it must "decode multisig address into bytes then encode back to multisig" in {
-    val multi = TestUtil.multiSigAddress.get.value
-    val bitcoinj =
-      org.bitcoinj.core.Base58.encode(org.bitcoinj.core.Base58.decode(multi))
-    Base58.encode(Base58.decode(multi)) must be(
-      TestUtil.multiSigAddress.get.value)
-    Base58.encode(Base58.decode(multi)) must be(bitcoinj)
-  }
-
   it must "read base58_keys_valid.json and validate each case" in {
     import org.bitcoins.core.util.testprotocol.Base58ValidTestCaseProtocol._
     val source =
diff --git a/core-test/src/test/scala/org/bitcoins/core/util/CryptoTestUtil.scala b/core-test/src/test/scala/org/bitcoins/core/util/CryptoTestUtil.scala
index 19119f40dd..d3a4660d56 100644
--- a/core-test/src/test/scala/org/bitcoins/core/util/CryptoTestUtil.scala
+++ b/core-test/src/test/scala/org/bitcoins/core/util/CryptoTestUtil.scala
@@ -1,6 +1,5 @@
 package org.bitcoins.core.util
 
-import org.bitcoinj.core.DumpedPrivateKey
 import org.bitcoins.core.crypto.ECPrivateKey
 
 /**
@@ -9,9 +8,6 @@ import org.bitcoins.core.crypto.ECPrivateKey
 trait CryptoTestUtil {
   def privateKeyBase58 = "cVLwRLTvz3BxDAWkvS3yzT9pUcTCup7kQnfT2smRjvmmm1wAP6QT"
 
-  def bitcoinjDumpedPrivateKey =
-    new DumpedPrivateKey(BitcoinJTestUtil.params, privateKeyBase58)
-  def bitcoinjPrivateKey = bitcoinjDumpedPrivateKey.getKey
   def privateKey = ECPrivateKey.fromWIFToPrivateKey(privateKeyBase58)
 
 }
diff --git a/project/Deps.scala b/project/Deps.scala
index bf685ad6c3..108edbfaf1 100644
--- a/project/Deps.scala
+++ b/project/Deps.scala
@@ -83,9 +83,6 @@ object Deps {
 
   object Test {
     val async = "org.scala-lang.modules" %% "scala-async" % V.asyncV % "test" withSources () withJavadoc ()
-
-    val bitcoinj = ("org.bitcoinj" % "bitcoinj-core" % "0.14.4" % "test")
-      .exclude("org.slf4j", "slf4j-api")
     val junitInterface = "com.novocode" % "junit-interface" % V.junitV % "test" withSources () withJavadoc ()
     val logback = Compile.logback % "test"
     val scalacheck = Compile.scalacheck % "test"
@@ -118,7 +115,6 @@ object Deps {
   )
 
   val coreTest = List(
-    Test.bitcoinj,
     Test.junitInterface,
     Test.logback,
     Test.scalaTest,