diff --git a/electrumx/lib/coins.py b/electrumx/lib/coins.py
index b694746..c718f61 100644
--- a/electrumx/lib/coins.py
+++ b/electrumx/lib/coins.py
@@ -43,6 +43,7 @@ from electrumx.lib.hash import Base58, hash160, double_sha256, hash_to_hex_str
 from electrumx.lib.hash import HASHX_LEN, hex_str_to_hash
 from electrumx.lib.script import ScriptPubKey, OpCodes
 import electrumx.lib.tx as lib_tx
+import electrumx.lib.tx_dash as lib_tx_dash
 import electrumx.server.block_processor as block_proc
 import electrumx.server.daemon as daemon
 from electrumx.server.session import (ElectrumX, DashElectrumX,
@@ -914,6 +915,7 @@ class Dash(Coin):
     ]
     SESSIONCLS = DashElectrumX
     DAEMON = daemon.DashDaemon
+    DESERIALIZER = lib_tx_dash.DeserializerDash
 
     @classmethod
     def header_hash(cls, header):
diff --git a/electrumx/lib/tx_dash.py b/electrumx/lib/tx_dash.py
new file mode 100644
index 0000000..774fa7d
--- /dev/null
+++ b/electrumx/lib/tx_dash.py
@@ -0,0 +1,250 @@
+# Copyright (c) 2016-2018, Neil Booth
+# Copyright (c) 2018, the ElectrumX authors
+#
+# All rights reserved.
+#
+# The MIT License (MIT)
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+'''Deserializer for Dash DIP2 special transaction types'''
+
+from collections import namedtuple
+
+from electrumx.lib.tx import Deserializer
+
+
+# https://github.com/dashpay/dips/blob/master/dip-0002.md
+class DashTx(namedtuple("DashTx",
+                        "version inputs outputs locktime "
+                        "tx_type extra_payload")):
+    '''Class representing a Dash transaction'''
+
+
+# https://github.com/dashpay/dips/blob/master/dip-0002-special-transactions.md
+class DashProRegTx(namedtuple("DashProRegTx",
+                              "version type mode collateralOutpoint "
+                              "ipAddress port KeyIdOwner PubKeyOperator "
+                              "KeyIdVoting operatorReward scriptPayout "
+                              "inputsHash payloadSig")):
+    '''Class representing DIP3 ProRegTx'''
+
+
+class DashProUpServTx(namedtuple("DashProUpServTx",
+                                 "version proTXHash ipAddress port "
+                                 "scriptOperatorPayout inputsHash "
+                                 "payloadSig")):
+    '''Class representing DIP3 ProUpServTx'''
+
+
+class DashProUpRegTx(namedtuple("DashProUpRegTx",
+                                "version proTXHash mode PubKeyOperator "
+                                "KeyIdVoting scriptPayout inputsHash "
+                                "payloadSig")):
+    '''Class representing DIP3 ProUpRegTx'''
+
+
+class DashProUpRevTx(namedtuple("DashProUpRevTx",
+                                "version proTXHash reason "
+                                "inputsHash payloadSig")):
+    '''Class representing DIP3 ProUpRevTx'''
+
+
+class DashCbTx(namedtuple("DashCbTx", "version height merkleRootMNList")):
+    '''Class representing DIP4 coinbase special tx'''
+
+
+class DashSubTxRegister(namedtuple("DashSubTxRegister",
+                                   "version userName pubKey payloadSig")):
+    '''Class representing DIP5 SubTxRegister'''
+
+
+class DashSubTxTopup(namedtuple("DashSubTxTopup",
+                                "version regTxHash")):
+    '''Class representing DIP5 SubTxTopup'''
+
+
+class DashSubTxResetKey(namedtuple("DashSubTxResetKey",
+                                   "version regTxHash hashPrevSubTx "
+                                   "creditFee newPubKey payloadSig")):
+    '''Class representing DIP5 SubTxResetKey'''
+
+
+class DashSubTxCloseAccount(namedtuple("DashSubTxCloseAccount",
+                                       "version regTxHash hashPrevSubTx "
+                                       "creditFee payloadSig")):
+    '''Class representing DIP5 SubTxCloseAccount'''
+
+
+# https://dash-docs.github.io/en/developer-reference#outpoint
+class TxOutPoint(namedtuple("TxOutPoint", "hash index")):
+    '''Class representing tx output outpoint'''
+
+
+class DeserializerDash(Deserializer):
+    '''Deserializer for Dash DIP2 special tx types'''
+    PRO_REG_TX = 1
+    PRO_UP_SERV_TX = 2
+    PRO_UP_REG_TX = 3
+    PRO_UP_REV_TX = 4
+    CB_TX = 5
+    SUB_TX_REGISTER = 8
+    SUB_TX_TOPUP = 9
+    SUB_TX_RESET_KEY = 10
+    SUB_TX_CLOSE_ACCOUNT = 11
+
+    def read_tx(self):
+        header = self._read_le_uint32()
+        tx_type = header >> 16  # DIP2 tx type
+        if tx_type:
+            version = header & 0x0000ffff
+        else:
+            version = header
+
+        if tx_type and version < 3:
+            version = header
+            tx_type = 0
+
+        inputs = self._read_inputs()
+        outputs = self._read_outputs()
+        locktime = self._read_le_uint32()
+        if tx_type:
+            extra_payload_size = self._read_varint()
+            end = self.cursor + extra_payload_size
+            if tx_type == DeserializerDash.CB_TX:
+                extra_payload = self._read_cb_tx()
+            elif tx_type == DeserializerDash.PRO_REG_TX:
+                extra_payload = self._read_pro_reg_tx()
+            elif tx_type == DeserializerDash.PRO_UP_SERV_TX:
+                extra_payload = self._read_pro_up_serv_tx()
+            elif tx_type == DeserializerDash.PRO_UP_REG_TX:
+                extra_payload = self._read_pro_up_reg_tx()
+            elif tx_type == DeserializerDash.PRO_UP_REV_TX:
+                extra_payload = self._read_pro_up_rev_tx()
+            elif tx_type == DeserializerDash.SUB_TX_REGISTER:
+                extra_payload = self._read_sub_tx_register()
+            elif tx_type == DeserializerDash.SUB_TX_TOPUP:
+                extra_payload = self._read_sub_tx_topup()
+            elif tx_type == DeserializerDash.SUB_TX_RESET_KEY:
+                extra_payload = self._read_sub_tx_reset_key()
+            elif tx_type == DeserializerDash.SUB_TX_CLOSE_ACCOUNT:
+                extra_payload = self._read_sub_tx_close_account()
+            else:
+                extra_payload = self._read_nbytes(extra_payload_size)
+            assert self.cursor == end
+        else:
+            extra_payload = b''
+        tx = DashTx(version, inputs, outputs, locktime, tx_type, extra_payload)
+        return tx
+
+    def _read_outpoint(self):
+        return TxOutPoint(
+            self._read_nbytes(32),      # hash
+            self._read_le_uint32()      # index
+        )
+
+    def _read_pro_reg_tx(self):
+        return DashProRegTx(
+            self._read_le_uint16(),     # version
+            self._read_le_uint16(),     # type
+            self._read_le_uint16(),     # mode
+            self._read_outpoint(),      # collateralOutpoint
+            self._read_nbytes(16),      # ipAddress
+            self._read_le_uint16(),     # port
+            self._read_nbytes(20),      # KeyIdOwner
+            self._read_nbytes(48),      # PubKeyOperator
+            self._read_nbytes(20),      # KeyIdVoting
+            self._read_le_uint16(),     # operatorReward
+            self._read_varbytes(),      # scriptPayout
+            self._read_nbytes(32),      # inputsHash
+            self._read_varbytes()       # payloadSig
+        )
+
+    def _read_pro_up_serv_tx(self):
+        return DashProUpServTx(
+            self._read_le_uint16(),     # version
+            self._read_nbytes(32),      # proTXHash
+            self._read_nbytes(16),      # ipAddress
+            self._read_le_uint16(),     # port
+            self._read_varbytes(),      # scriptOperatorPayout
+            self._read_nbytes(32),      # inputsHash
+            self._read_nbytes(96)       # payloadSig BLSSig
+        )
+
+    def _read_pro_up_reg_tx(self):
+        return DashProUpRegTx(
+            self._read_le_uint16(),     # version
+            self._read_nbytes(32),      # proTXHash
+            self._read_le_uint16(),     # mode
+            self._read_nbytes(48),      # PubKeyOperator
+            self._read_nbytes(20),      # KeyIdOwner
+            self._read_varbytes(),      # scriptPayout
+            self._read_nbytes(32),      # inputsHash
+            self._read_varbytes()       # payloadSig
+        )
+
+    def _read_pro_up_rev_tx(self):
+        return DashProUpRevTx(
+            self._read_le_uint16(),     # version
+            self._read_nbytes(32),      # proTXHash
+            self._read_le_uint16(),     # reason
+            self._read_nbytes(32),      # inputsHash
+            self._read_nbytes(96)       # payloadSig BLSSig
+        )
+
+    def _read_cb_tx(self):
+        return DashCbTx(
+            self._read_le_uint16(),     # version
+            self._read_le_uint32(),     # height
+            self._read_nbytes(32)       # merkleRootMNList as bytes
+        )
+
+    def _read_sub_tx_register(self):
+        return DashSubTxRegister(
+            self._read_le_uint16(),     # version
+            self._read_varbytes(),      # userName
+            self._read_nbytes(48),      # pubKey BLSPubKey
+            self._read_nbytes(96)       # payloadSig BLSSig
+        )
+
+    def _read_sub_tx_topup(self):
+        return DashSubTxTopup(
+            self._read_le_uint16(),     # version
+            self._read_nbytes(32)       # regTxHash
+        )
+
+    def _read_sub_tx_reset_key(self):
+        return DashSubTxResetKey(
+            self._read_le_uint16(),     # version
+            self._read_nbytes(32),      # regTxHash
+            self._read_nbytes(32),      # hashPrevSubTx
+            self._read_le_int64(),      # creditFee
+            self._read_nbytes(48),      # newPubKey BLSPubKey
+            self._read_nbytes(96)       # payloadSig BLSSig
+        )
+
+    def _read_sub_tx_close_account(self):
+        return DashSubTxCloseAccount(
+            self._read_le_uint16(),     # version
+            self._read_nbytes(32),      # regTxHash
+            self._read_nbytes(32),      # hashPrevSubTx
+            self._read_le_int64(),      # creditFee
+            self._read_nbytes(96)       # payloadSig BLSSig
+        )
diff --git a/tests/lib/__init__.py b/tests/lib/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/lib/test_tx_dash.py b/tests/lib/test_tx_dash.py
new file mode 100644
index 0000000..3a08885
--- /dev/null
+++ b/tests/lib/test_tx_dash.py
@@ -0,0 +1,242 @@
+import electrumx.lib.tx_dash as lib_tx_dash
+
+
+V2_TX = (
+    '020000000192809f0b234cb850d71d020e678e93f074648ed0df5affd0c46d3bcb177f'
+    '9ccf020000008b483045022100c5403bcf86c3ae7b8fd4ca0d1e4df6729cc1af05ff95'
+    'd9726b43a64b41dd5d9902207fab615f41871885aa3062fc7d8f8d9d3dcbc2e4867c5d'
+    '96dd7a176b99e927924141040baa4271a82c5f1a09a5ea63d763697ca0545b6049c4dd'
+    '8e8d099dd91f2da10eb11e829000a82047ac56969fb582433067a21c3171e569d1832c'
+    '34fdd793cfc8ffffffff030000000000000000226a20195ce612d20e5284eb78bb28c9'
+    'c50d6139b10b77b2d5b2f94711b13162700472bfc53000000000001976a9144a519c63'
+    'f985ba5ab8b71bb42f1ecb82a0a0d80788acf6984315000000001976a9148b80536aa3'
+    'c460258cda834b86a46787c9a2b0bf88ac00000000')
+
+
+CB_TX = (
+    '0300050001000000000000000000000000000000000000000000000000000000000000'
+    '0000ffffffff1303c407040e2f5032506f6f6c2d74444153482fffffffff0448d6a73d'
+    '000000001976a914293859173a34194d445c2962b97383e2a93d7cb288ac22fc433e00'
+    '0000001976a914bf09c602c6b8f1db246aba5c37ad1cfdcb16b15e88ace9259c000000'
+    '00004341047559d13c3f81b1fadbd8dd03e4b5a1c73b05e2b980e00d467aa9440b29c7'
+    'de23664dde6428d75cafed22ae4f0d302e26c5c5a5dd4d3e1b796d7281bdc9430f35ac'
+    '00000000000000002a6a28be61411c3c79b7fd45923118ba74d340afb248ae2edafe78'
+    'c15e2d1aa337c942000000000000000000000000260100c407040076629a6e42fb5191'
+    '88f65889fd3ac0201be87aa227462b5643e8bb2ec1d7a82a')
+
+
+PRO_REG_TX = (
+    '030001000335f1c2ca44a1eb72e59f589df2852caacba39b7c0a5e61967f6b71d7a763'
+    '3153000000006b483045022100b2d457bbe855abc365a7db9c8014ea106fdb6dae6327'
+    '927fe81dfbdecf032b260220262e7e6c28899cd741db55c2e2ec35ed849cf99e78e36a'
+    '70c2ec3dac3c2ef60a012102500859b69a4cad6cfe4cf6b606be25b367c562b3be9a24'
+    'b06d60c7047ee18fa2feffffff473ac70b52b2260aa0e4bec818c5a8c71d37a1b17430'
+    '75823c8e572ad71938b0000000006b483045022100fa4d57cdeb61f8ff1298fdc40256'
+    'c68dfce320d44f584494c0a53233ddbe30a702206a50aaa245a6097d06c790fb1d7a37'
+    'ced1622299c0aa93ebc018f1590d0eb15c012103f273126b24f755ab7e41311d03d545'
+    '590c162ea179421c5e18271c57de1a1635feffffff4de1afa0a321bc88c34978d4eeba'
+    '739256b86f8d8cdf47651b6f60e451f0a3de000000006a47304402202c4c5c48ac1d37'
+    '9f6da8143664072d6545d64691ce4738e026adf80c9afab24f022053804b4166a342da'
+    '38c538757680bebdc7785ce8c18a817fb3014fdaeec6d3bb0121028e99f6bc86489a43'
+    'f953b2f0b046666efd7f7ad44da30f62ed5d32921556f8c5feffffff01c7430f000000'
+    '00001976a914c1de5f0587dc39112a28644904b0f3ed3298a6ed88ac00000000fd1201'
+    '0100000000004de1afa0a321bc88c34978d4eeba739256b86f8d8cdf47651b6f60e451'
+    'f0a3de0100000000000000000000000000ffff12ca34aa752f2b3edeed6842db1f59cf'
+    '35de1ab5721094f049d000ab986c589053b3f3bd720724e75e18581afdca54bce80d14'
+    '750b1bcf9202158fe6c596ce8391815265747bd4a2009e2b3edeed6842db1f59cf35de'
+    '1ab5721094f049d000001976a9149bf5948b901a1e3e54e42c6e10496a17cd4067e088'
+    'ac54d046585434668b4ee664c597864248b8a6aac33a7b2f4fcd1cc1b5da474a8a411f'
+    'c1617ae83406c92a9132f14f9fff1487f2890f401e776fdddd639bc5055c456268cf74'
+    '97400d3196109c8cd31b94732caf6937d63de81d9a5be4db5beb83f9aa')
+
+
+PRO_UP_SERV_TX = (
+    '03000200010931c6b0ad7ce07f3c8aefeeb78e246a4fe6872bbf08ab6e4eb6a7b69acd'
+    '64a6010000006b483045022100a2feb698c43c752738fabea281b7e9e5a3aa648a4c54'
+    '1171e06d7c372db92c65022061c1ec3c92f2e76bb7fb1b548d854f19a41e6421267231'
+    '74150412caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9a667b'
+    '3d0103f761cc69a211feffffff0189fa433e000000001976a914551ab8ca96a9142217'
+    '4d22769c3a4f90b2dcd0de88ac00000000ce01003c6dca244f49f19d3f09889753ffff'
+    '1fec5bb8f9f5bd5bc09dabd999da21198f00000000000000000000ffff5fb735802711'
+    '1976a91421851058431a7d722e8e8dd9509e7f2b8e7042ec88acefcfe3d578914bb48c'
+    '6bd71b3459d384e4237446d521c9e2c6b6fcf019b5aafc99443fe14f644cfa47086e88'
+    '97cf7b546a67723d4a8ec5353a82f962a96ec3cea328343b647aace2897d6eddd0b8c8'
+    'ee0f2e56f6733aed2e9f0006caafa6fc21c18a013c619d6e37af8d2f0985e3b769abc3'
+    '8ffa60e46c365a38d9fa0d44fd62')
+
+
+PRO_UP_REG_TX = (
+    '0300030001f8f9a27ca1c727fb971d45983c9a08a0bbd76753f8eb7913130c72d94218'
+    '8d32000000006a47304402205d530dc4e9e34b44fdf58f06fff0c225d80490be2861ad'
+    '7fe5fed7e62b48053b022052a78b5beaccc468b7fdb80e47090cb54c351aa9aa82fa7e'
+    '9b15b82d53b5f15a0121028106cde1660d2bfcc11231dfb1a05b60ded262d59e5e021a'
+    'a3a814234013f4e9feffffff01c60c0000000000001976a91452a23d803da188cca952'
+    'f9b7bc94c47c6fd1468a88ac00000000e40100aeb817f94b8e699b58130a53d2fbe98d'
+    '5519c2abe3b15e6f36c9abeb32e4dcce00001061eb559a64427ad239830742ef59591c'
+    'dbbdffda7d3f5e7a2d95b9607ad80e389191e44c59ea5987b85e6d0e3eb527b9e198fa'
+    '7a745913c9278ec993d4472a95dac4251976a914eebbacffff3a55437803e0efb68a7d'
+    '591e0409d188ac0eb0067e6ccdd2acb96e7279113702218f3f0ab6f2287e14c11c5be6'
+    'f2051d5a4120cb00124d838b02207097048cb668244cd79df825eb2d4d211fd2c4604c'
+    '18b30e1ae9bb654787144d16856676efff180889f05b5c9121a483b4ae3f0ea0ff3faf')
+
+
+PRO_UP_REV_TX = (
+    '030004000100366cd80169116da28e387413e8e3660a7aedd65002b320d0bd165eea8e'
+    'ba52000000006a4730440220043a639f4554842f38253c75d066e70098ef02b141d5ff'
+    'dea9fc408d307fce1202205d5d779f416fbc431847d19d83ae90c4036cf9925d3c4852'
+    'cdd5df25d5843a48012102688d37c6d08a236d7952cdbc310dcb344ddae8b02e028720'
+    '1e79fd774509e8abfeffffff01570b0000000000001976a91490c5ce9d8bfefe3526d8'
+    '538cd0ed5e5d472c992a88ac00000000a40100b67ffbbd095de31ea38446754b6bf251'
+    '287936d2881d58b7c4efae0b54c75e9f0000eb073521b60306717f1d4feb3e9022f886'
+    'b97bf981137684716a7d3d7e45b7fe83f4bb5530f7c5954e8b1ad50a74a9e1d65dcdcb'
+    'e4acb8cbe3671abc7911e8c3954856c4da7e5fd242f2e4f5546f08d90849245bc593d1'
+    '605654e1a99cd0a79e9729799742c48d4920044666ad25a85fd093559c43e4900e634c'
+    '371b9b8d89ba')
+
+
+SUB_TX_REGISTER = (
+    '03000800010931c6b0ad7ce07f3c8aefeeb78e246a4fe6872bbf08ab6e4eb6a7b69acd'
+    '64a6010000006b483045022100a2feb698c43c752738fabea281b7e9e5a3aa648a4c54'
+    '1171e06d7c372db92c65022061c1ec3c92f2e76bb7fb1b548d854f19a41e6421267231'
+    '74150412caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9a667b'
+    '3d0103f761cc69a211feffffff0189fa433e000000001976a914551ab8ca96a9142217'
+    '4d22769c3a4f90b2dcd0de88ac00000000960100036162638e7042ec88acefcfe3d578'
+    '914bb48c6bd71b3459d384e42374e8abfeffffff01570b0000000000001976a91490c5'
+    'ce9d8bc992a88ac00000000a40100b67ffbbd095de31ea38446754e8abfeffffff0157'
+    '0b0000000000001976a91490c5ce9d8bc992a88ac00000000a40100b67ffbbd095de31'
+    'ea38446754e8abfeffffff01570b0000000000001976a91490c5ce9d')
+
+
+SUB_TX_TOPUP = (
+    '03000900010931c6b0ad7ce07f3c8aefeeb78e246a4fe6872bbf08ab6e4eb6a7b69acd'
+    '64a6010000006b483045022100a2feb698c43c752738fabea281b7e9e5a3aa648a4c54'
+    '1171e06d7c372db92c65022061c1ec3c92f2e76bb7fb1b548d854f19a41e6421267231'
+    '74150412caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9a667b'
+    '3d0103f761cc69a211feffffff0189fa433e000000001976a914551ab8ca96a9142217'
+    '4d22769c3a4f90b2dcd0de88ac00000000220100d384e42374e8abfeffffff01570b00'
+    '0000a40100b67ffbbd095de31ea3844675')
+
+
+SUB_TX_RESET_KEY = (
+    '03000a00010931c6b0ad7ce07f3c8aefeeb78e246a4fe6872bbf08ab6e4eb6a7b69acd'
+    '64a6010000006b483045022100a2feb698c43c752738fabea281b7e9e5a3aa648a4c54'
+    '1171e06d7c372db92c65022061c1ec3c92f2e76bb7fb1b548d854f19a41e6421267231'
+    '74150412caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9a667b'
+    '3d0103f761cc69a211feffffff0189fa433e000000001976a914551ab8ca96a9142217'
+    '4d22769c3a4f90b2dcd0de88ac00000000da0100d384e42374e8abfeffffff01570b00'
+    '0000a40100b67ffbbd095de31ea3844675af3e98e9601210293360bf2a2e810673412b'
+    'c6e8e0e358f3fb7bdbe9a667b3d0103f761caf3e98e9601210293360bf2a2e81067341'
+    '2bc6e8e0e358f3fb7bdbe9a667b3d0103f761caf3e98e9601210293360bf2a2e810673'
+    '412bc6e8e0e358f3fb7bdbe9a667b3d0103f761caf3e98e9601210293360bf2a2e8106'
+    '73412bc6e8e0e358f3fb7bdbe9a667b3d0103f761caf3e98e9601210293360bf2a2e81'
+    '0673412bc6e8e0e358f3fb7bdbe9a667b3d0103f761cabcdefabcdef')
+
+
+SUB_TX_CLOSE_ACCOUNT = (
+    '03000b00010931c6b0ad7ce07f3c8aefeeb78e246a4fe6872bbf08ab6e4eb6a7b69acd'
+    '64a6010000006b483045022100a2feb698c43c752738fabea281b7e9e5a3aa648a4c54'
+    '1171e06d7c372db92c65022061c1ec3c92f2e76bb7fb1b548d854f19a41e6421267231'
+    '74150412caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9a667b'
+    '3d0103f761cc69a211feffffff0189fa433e000000001976a914551ab8ca96a9142217'
+    '4d22769c3a4f90b2dcd0de88ac00000000aa0100d384e42374e8abfeffffff01570b00'
+    '0000a40100b67ffbbd095de31ea3844675af3e98e9601210293360bf2a2e810673412b'
+    'c6e8e0e358f3fb7bdbe9a12bc6e8e0e358f3fb7bdbe9a62bc6e8e0e358f3fb7bdbe9a6'
+    '67b3d0103f761caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9'
+    'a667b3d0103f761caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdb'
+    'e9a667b3d0103f761cabcdefabcdef')
+
+
+UNKNOWN_SPEC_TX = (
+    '0300bb00010931c6b0ad7ce07f3c8aefeeb78e246a4fe6872bbf08ab6e4eb6a7b69acd'
+    '64a6010000006b483045022100a2feb698c43c752738fabea281b7e9e5a3aa648a4c54'
+    '1171e06d7c372db92c65022061c1ec3c92f2e76bb7fb1b548d854f19a41e6421267231'
+    '74150412caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9a667b'
+    '3d0103f761cc69a211feffffff0189fa433e000000001976a914551ab8ca96a9142217'
+    '4d22769c3a4f90b2dcd0de88ac00000000aa0100d384e42374e8abfeffffff01570b00'
+    '0000a40100b67ffbbd095de31ea3844675af3e98e9601210293360bf2a2e810673412b'
+    'c6e8e0e358f3fb7bdbe9a12bc6e8e0e358f3fb7bdbe9a62bc6e8e0e358f3fb7bdbe9a6'
+    '67b3d0103f761caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9'
+    'a667b3d0103f761caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdb'
+    'e9a667b3d0103f761cabcdefabcdef')
+
+
+WRONG_SPEC_TX = (  # Tx version < 3
+    '0200bb00010931c6b0ad7ce07f3c8aefeeb78e246a4fe6872bbf08ab6e4eb6a7b69acd'
+    '64a6010000006b483045022100a2feb698c43c752738fabea281b7e9e5a3aa648a4c54'
+    '1171e06d7c372db92c65022061c1ec3c92f2e76bb7fb1b548d854f19a41e6421267231'
+    '74150412caf3e98e9601210293360bf2a2e810673412bc6e8e0e358f3fb7bdbe9a667b'
+    '3d0103f761cc69a211feffffff0189fa433e000000001976a914551ab8ca96a9142217'
+    '4d22769c3a4f90b2dcd0de88ac00000000aa0100d384e42374e8abfeffffff01570b00'
+    '0000')
+
+
+def test_dash_v2_tx():
+    test = bytes.fromhex(V2_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_cb_tx():
+    test = bytes.fromhex(CB_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_pro_reg_tx():
+    test = bytes.fromhex(PRO_REG_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_pro_up_serv_tx():
+    test = bytes.fromhex(PRO_UP_SERV_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_pro_up_reg_tx():
+    test = bytes.fromhex(PRO_UP_REG_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_pro_up_rev_tx():
+    test = bytes.fromhex(PRO_UP_REV_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_sub_tx_register_tx():
+    test = bytes.fromhex(SUB_TX_REGISTER)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_sub_tx_topup_tx():
+    test = bytes.fromhex(SUB_TX_TOPUP)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_sub_tx_reset_key_tx():
+    test = bytes.fromhex(SUB_TX_RESET_KEY)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_sub_tx_close_account_tx():
+    test = bytes.fromhex(SUB_TX_CLOSE_ACCOUNT)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_unknown_spec_tx():
+    test = bytes.fromhex(UNKNOWN_SPEC_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()
+
+
+def test_dash_tx_wrong_spec_tx():
+    test = bytes.fromhex(WRONG_SPEC_TX)
+    deser = lib_tx_dash.DeserializerDash(test)
+    tx = deser.read_tx()