# Copyright (c) 2016-2017, Neil Booth
# Copyright (c) 2017, 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.

'''Module providing coin abstraction.

Anything coin-specific should go in this file and be subclassed where
necessary for appropriate handling.
'''

from collections import namedtuple
import re
import struct
from decimal import Decimal
from hashlib import sha256
from functools import partial
import base64
from typing import Type, List

import torba.server.util as util
from torba.server.hash import Base58, hash160, double_sha256, hash_to_hex_str
from torba.server.hash import HASHX_LEN, hex_str_to_hash
from torba.server.script import ScriptPubKey, OpCodes
import torba.server.tx as lib_tx
import torba.server.block_processor as block_proc
import torba.server.daemon as daemon
from torba.server.session import ElectrumX, DashElectrumX


Block = namedtuple("Block", "raw header transactions")
OP_RETURN = OpCodes.OP_RETURN


class CoinError(Exception):
    '''Exception raised for coin-related errors.'''


class Coin(object):
    '''Base class of coin hierarchy.'''

    REORG_LIMIT = 200
    # Not sure if these are coin-specific
    RPC_URL_REGEX = re.compile('.+@(\\[[0-9a-fA-F:]+\\]|[^:]+)(:[0-9]+)?')
    VALUE_PER_COIN = 100000000
    CHUNK_SIZE = 2016
    BASIC_HEADER_SIZE = 80
    STATIC_BLOCK_HEADERS = True
    SESSIONCLS = ElectrumX
    DESERIALIZER = lib_tx.Deserializer
    DAEMON = daemon.Daemon
    BLOCK_PROCESSOR = block_proc.BlockProcessor
    HEADER_VALUES = [
        'version', 'prev_block_hash', 'merkle_root', 'timestamp', 'bits', 'nonce'
    ]
    HEADER_UNPACK = struct.Struct('< I 32s 32s I I I').unpack_from
    MEMPOOL_HISTOGRAM_REFRESH_SECS = 500
    XPUB_VERBYTES = bytes('????', 'utf-8')
    XPRV_VERBYTES = bytes('????', 'utf-8')
    ENCODE_CHECK = Base58.encode_check
    DECODE_CHECK = Base58.decode_check
    # Peer discovery
    PEER_DEFAULT_PORTS = {'t': '50001', 's': '50002'}
    PEERS: List[str] = []

    @classmethod
    def lookup_coin_class(cls, name, net):
        '''Return a coin class given name and network.

        Raise an exception if unrecognised.'''
        req_attrs = ['TX_COUNT', 'TX_COUNT_HEIGHT', 'TX_PER_BLOCK']
        for coin in util.subclasses(Coin):
            if (coin.NAME.lower() == name.lower() and
                    coin.NET.lower() == net.lower()):
                coin_req_attrs = req_attrs.copy()
                missing = [attr for attr in coin_req_attrs
                           if not hasattr(coin, attr)]
                if missing:
                    raise CoinError('coin {} missing {} attributes'
                                    .format(name, missing))
                return coin
        raise CoinError('unknown coin {} and network {} combination'
                        .format(name, net))

    @classmethod
    def sanitize_url(cls, url):
        # Remove surrounding ws and trailing /s
        url = url.strip().rstrip('/')
        match = cls.RPC_URL_REGEX.match(url)
        if not match:
            raise CoinError('invalid daemon URL: "{}"'.format(url))
        if match.groups()[1] is None:
            url += ':{:d}'.format(cls.RPC_PORT)
        if not url.startswith('http://') and not url.startswith('https://'):
            url = 'http://' + url
        return url + '/'

    @classmethod
    def genesis_block(cls, block):
        '''Check the Genesis block is the right one for this coin.

        Return the block less its unspendable coinbase.
        '''
        header = cls.block_header(block, 0)
        header_hex_hash = hash_to_hex_str(cls.header_hash(header))
        if header_hex_hash != cls.GENESIS_HASH:
            raise CoinError('genesis block has hash {} expected {}'
                            .format(header_hex_hash, cls.GENESIS_HASH))

        return header + bytes(1)

    @classmethod
    def hashX_from_script(cls, script):
        '''Returns a hashX from a script, or None if the script is provably
        unspendable so the output can be dropped.
        '''
        if script and script[0] == OP_RETURN:
            return None
        return sha256(script).digest()[:HASHX_LEN]

    @staticmethod
    def lookup_xverbytes(verbytes):
        '''Return a (is_xpub, coin_class) pair given xpub/xprv verbytes.'''
        # Order means BTC testnet will override NMC testnet
        for coin in util.subclasses(Coin):
            if verbytes == coin.XPUB_VERBYTES:
                return True, coin
            if verbytes == coin.XPRV_VERBYTES:
                return False, coin
        raise CoinError('version bytes unrecognised')

    @classmethod
    def address_to_hashX(cls, address):
        '''Return a hashX given a coin address.'''
        return cls.hashX_from_script(cls.pay_to_address_script(address))

    @classmethod
    def P2PKH_address_from_hash160(cls, hash160):
        '''Return a P2PKH address given a public key.'''
        assert len(hash160) == 20
        return cls.ENCODE_CHECK(cls.P2PKH_VERBYTE + hash160)

    @classmethod
    def P2PKH_address_from_pubkey(cls, pubkey):
        '''Return a coin address given a public key.'''
        return cls.P2PKH_address_from_hash160(hash160(pubkey))

    @classmethod
    def P2SH_address_from_hash160(cls, hash160):
        '''Return a coin address given a hash160.'''
        assert len(hash160) == 20
        return cls.ENCODE_CHECK(cls.P2SH_VERBYTES[0] + hash160)

    @classmethod
    def hash160_to_P2PKH_script(cls, hash160):
        return ScriptPubKey.P2PKH_script(hash160)

    @classmethod
    def hash160_to_P2PKH_hashX(cls, hash160):
        return cls.hashX_from_script(cls.hash160_to_P2PKH_script(hash160))

    @classmethod
    def pay_to_address_script(cls, address):
        '''Return a pubkey script that pays to a pubkey hash.

        Pass the address (either P2PKH or P2SH) in base58 form.
        '''
        raw = cls.DECODE_CHECK(address)

        # Require version byte(s) plus hash160.
        verbyte = -1
        verlen = len(raw) - 20
        if verlen > 0:
            verbyte, hash160 = raw[:verlen], raw[verlen:]

        if verbyte == cls.P2PKH_VERBYTE:
            return cls.hash160_to_P2PKH_script(hash160)
        if verbyte in cls.P2SH_VERBYTES:
            return ScriptPubKey.P2SH_script(hash160)

        raise CoinError('invalid address: {}'.format(address))

    @classmethod
    def privkey_WIF(cls, privkey_bytes, compressed):
        '''Return the private key encoded in Wallet Import Format.'''
        payload = bytearray(cls.WIF_BYTE) + privkey_bytes
        if compressed:
            payload.append(0x01)
        return cls.ENCODE_CHECK(payload)

    @classmethod
    def header_hash(cls, header):
        '''Given a header return hash'''
        return double_sha256(header)

    @classmethod
    def header_prevhash(cls, header):
        '''Given a header return previous hash'''
        return header[4:36]

    @classmethod
    def static_header_offset(cls, height):
        '''Given a header height return its offset in the headers file.

        If header sizes change at some point, this is the only code
        that needs updating.'''
        assert cls.STATIC_BLOCK_HEADERS
        return height * cls.BASIC_HEADER_SIZE

    @classmethod
    def static_header_len(cls, height):
        '''Given a header height return its length.'''
        return (cls.static_header_offset(height + 1)
                - cls.static_header_offset(height))

    @classmethod
    def block_header(cls, block, height):
        '''Returns the block header given a block and its height.'''
        return block[:cls.static_header_len(height)]

    @classmethod
    def block(cls, raw_block, height):
        '''Return a Block namedtuple given a raw block and its height.'''
        header = cls.block_header(raw_block, height)
        txs = cls.DESERIALIZER(raw_block, start=len(header)).read_tx_block()
        return Block(raw_block, header, txs)

    @classmethod
    def decimal_value(cls, value):
        '''Return the number of standard coin units as a Decimal given a
        quantity of smallest units.

        For example 1 BTC is returned for 100 million satoshis.
        '''
        return Decimal(value) / cls.VALUE_PER_COIN

    @classmethod
    def electrum_header(cls, header, height):
        h = dict(zip(cls.HEADER_VALUES, cls.HEADER_UNPACK(header)))
        # Add the height that is not present in the header itself
        h['block_height'] = height
        # Convert bytes to str
        h['prev_block_hash'] = hash_to_hex_str(h['prev_block_hash'])
        h['merkle_root'] = hash_to_hex_str(h['merkle_root'])
        return h


class AuxPowMixin(object):
    STATIC_BLOCK_HEADERS = False
    DESERIALIZER = lib_tx.DeserializerAuxPow

    @classmethod
    def header_hash(cls, header):
        '''Given a header return hash'''
        return double_sha256(header[:cls.BASIC_HEADER_SIZE])

    @classmethod
    def block_header(cls, block, height):
        '''Return the AuxPow block header bytes'''
        deserializer = cls.DESERIALIZER(block)
        return deserializer.read_header(height, cls.BASIC_HEADER_SIZE)


class EquihashMixin(object):
    STATIC_BLOCK_HEADERS = False
    BASIC_HEADER_SIZE = 140  # Excluding Equihash solution
    DESERIALIZER = lib_tx.DeserializerEquihash
    HEADER_VALUES = ['version', 'prev_block_hash', 'merkle_root', 'reserved',
                     'timestamp', 'bits', 'nonce']
    HEADER_UNPACK = struct.Struct('< I 32s 32s 32s I I 32s').unpack_from

    @classmethod
    def electrum_header(cls, header, height):
        h = dict(zip(cls.HEADER_VALUES, cls.HEADER_UNPACK(header)))
        # Add the height that is not present in the header itself
        h['block_height'] = height
        # Convert bytes to str
        h['prev_block_hash'] = hash_to_hex_str(h['prev_block_hash'])
        h['merkle_root'] = hash_to_hex_str(h['merkle_root'])
        h['reserved'] = hash_to_hex_str(h['reserved'])
        h['nonce'] = hash_to_hex_str(h['nonce'])
        return h

    @classmethod
    def block_header(cls, block, height):
        '''Return the block header bytes'''
        deserializer = cls.DESERIALIZER(block)
        return deserializer.read_header(height, cls.BASIC_HEADER_SIZE)


class ScryptMixin(object):

    DESERIALIZER = lib_tx.DeserializerTxTime
    HEADER_HASH = None

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        if cls.HEADER_HASH is None:
            import scrypt
            cls.HEADER_HASH = lambda x: scrypt.hash(x, x, 1024, 1, 1, 32)

        version, = util.unpack_le_uint32_from(header)
        if version > 6:
            return super().header_hash(header)
        else:
            return cls.HEADER_HASH(header)


class KomodoMixin(object):
    P2PKH_VERBYTE = bytes.fromhex("3C")
    P2SH_VERBYTES = [bytes.fromhex("55")]
    WIF_BYTE = bytes.fromhex("BC")
    GENESIS_HASH = ('027e3758c3a65b12aa1046462b486d0a'
                    '63bfa1beae327897f56c5cfb7daaae71')
    DESERIALIZER = lib_tx.DeserializerZcash


class BitcoinMixin(object):
    SHORTNAME = "BTC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("00")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('000000000019d6689c085ae165831e93'
                    '4ff763ae46a2a6c172b3f1b60a8ce26f')
    RPC_PORT = 8332


class HOdlcoin(Coin):
    NAME = "HOdlcoin"
    SHORTNAME = "HODLC"
    NET = "mainnet"
    BASIC_HEADER_SIZE = 88
    P2PKH_VERBYTE = bytes.fromhex("28")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("a8")
    GENESIS_HASH = ('008872e5582924544e5c707ee4b839bb'
                    '82c28a9e94e917c94b40538d5658c04b')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 258858
    TX_COUNT_HEIGHT = 382138
    TX_PER_BLOCK = 5


class BitcoinCash(BitcoinMixin, Coin):
    NAME = "BitcoinCash"
    SHORTNAME = "BCH"
    TX_COUNT = 246362688
    TX_COUNT_HEIGHT = 511484
    TX_PER_BLOCK = 400
    PEERS = [
        'electroncash.cascharia.com s50002',
        'bch.electrumx.cash s t',
        'bccarihace4jdcnt.onion t52001 s52002',
        'abc1.hsmiths.com t60001 s60002',
        'electroncash.checksum0.com s t',
        'electrumx-cash.1209k.com s t',
        'electrum.leblancnet.us t50011 s50012',
        'electroncash.dk s t',
        'electrum.imaginary.cash s t',
    ]


class BitcoinSegwit(BitcoinMixin, Coin):
    NAME = "BitcoinSegwit"
    DESERIALIZER = lib_tx.DeserializerSegWit
    MEMPOOL_HISTOGRAM_REFRESH_SECS = 120
    TX_COUNT = 318337769
    TX_COUNT_HEIGHT = 524213
    TX_PER_BLOCK = 1400
    PEERS = [
        'btc.smsys.me s995',
        'E-X.not.fyi s t',
        'elec.luggs.co s443',
        'electrum.vom-stausee.de s t',
        'electrum3.hachre.de s t',
        'electrum.hsmiths.com s t',
        'helicarrier.bauerj.eu s t',
        'hsmiths4fyqlw5xw.onion s t',
        'luggscoqbymhvnkp.onion t80',
        'ozahtqwp25chjdjd.onion s t',
        'node.arihanc.com s t',
        'arihancckjge66iv.onion s t',
    ]


class BitcoinGold(EquihashMixin, BitcoinMixin, Coin):
    CHUNK_SIZE = 252
    NAME = "BitcoinGold"
    SHORTNAME = "BTG"
    FORK_HEIGHT = 491407
    P2PKH_VERBYTE = bytes.fromhex("26")
    P2SH_VERBYTES = [bytes.fromhex("17")]
    DESERIALIZER = lib_tx.DeserializerEquihashSegWit
    TX_COUNT = 265026255
    TX_COUNT_HEIGHT = 499923
    TX_PER_BLOCK = 50
    REORG_LIMIT = 1000
    RPC_PORT = 8338
    PEERS = [
        'electrumx-eu.bitcoingold.org s50002 t50001',
        'electrumx-us.bitcoingold.org s50002 t50001',
        'electrumx-eu.btcgpu.org s50002 t50001',
        'electrumx-us.btcgpu.org s50002 t50001'
    ]

    @classmethod
    def header_hash(cls, header):
        '''Given a header return hash'''
        height, = util.unpack_le_uint32_from(header, 68)
        if height >= cls.FORK_HEIGHT:
            return double_sha256(header)
        else:
            return double_sha256(header[:68] + header[100:112])

    @classmethod
    def electrum_header(cls, header, height):
        h = super().electrum_header(header, height)
        h['reserved'] = hash_to_hex_str(header[72:100])
        h['solution'] = hash_to_hex_str(header[140:])
        return h


class BitcoinGoldTestnet(BitcoinGold):
    FORK_HEIGHT = 1
    SHORTNAME = "TBTG"
    XPUB_VERBYTES = bytes.fromhex("043587CF")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("6F")
    P2SH_VERBYTES = [bytes.fromhex("C4")]
    WIF_BYTE = bytes.fromhex("EF")
    TX_COUNT = 0
    TX_COUNT_HEIGHT = 1
    NET = 'testnet'
    RPC_PORT = 18338
    GENESIS_HASH = ('00000000e0781ebe24b91eedc293adfe'
                    'a2f557b53ec379e78959de3853e6f9f6')
    PEERS = [
        'test-node1.bitcoingold.org s50002',
        'test-node2.bitcoingold.org s50002',
        'test-node3.bitcoingold.org s50002',
        'test-node1.btcgpu.org s50002',
        'test-node2.btcgpu.org s50002',
        'test-node3.btcgpu.org s50002'
    ]


class BitcoinGoldRegtest(BitcoinGold):
    FORK_HEIGHT = 2000
    SHORTNAME = "TBTG"
    XPUB_VERBYTES = bytes.fromhex("043587CF")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("6F")
    P2SH_VERBYTES = [bytes.fromhex("C4")]
    WIF_BYTE = bytes.fromhex("EF")
    TX_COUNT = 0
    TX_COUNT_HEIGHT = 1
    NET = 'regtest'
    RPC_PORT = 18444
    GENESIS_HASH = ('0f9188f13cb7b2c71f2a335e3a4fc328'
                    'bf5beb436012afca590b1a11466e2206')
    PEERS: List[str] = []


class Emercoin(Coin):
    NAME = "Emercoin"
    SHORTNAME = "EMC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("21")
    P2SH_VERBYTES = [bytes.fromhex("5c")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('00000000bcccd459d036a588d1008fce'
                    '8da3754b205736f32ddfd35350e84c2d')
    TX_COUNT = 217380620
    TX_COUNT_HEIGHT = 464000
    TX_PER_BLOCK = 1700
    VALUE_PER_COIN = 1000000
    RPC_PORT = 6662

    DESERIALIZER = lib_tx.DeserializerTxTimeAuxPow

    PEERS: List[str] = []

    @classmethod
    def block_header(cls, block, height):
        '''Returns the block header given a block and its height.'''
        deserializer = cls.DESERIALIZER(block)

        if deserializer.is_merged_block():
            return deserializer.read_header(height, cls.BASIC_HEADER_SIZE)
        return block[:cls.static_header_len(height)]

    @classmethod
    def header_hash(cls, header):
        '''Given a header return hash'''
        return double_sha256(header[:cls.BASIC_HEADER_SIZE])


class BitcoinTestnetMixin(object):
    SHORTNAME = "XTN"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587cf")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("6f")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("ef")
    GENESIS_HASH = ('000000000933ea01ad0ee984209779ba'
                    'aec3ced90fa3f408719526f8d77f4943')
    REORG_LIMIT = 8000
    TX_COUNT = 12242438
    TX_COUNT_HEIGHT = 1035428
    TX_PER_BLOCK = 21
    RPC_PORT = 18332
    PEER_DEFAULT_PORTS = {'t': '51001', 's': '51002'}


class BitcoinCashTestnet(BitcoinTestnetMixin, Coin):
    '''Bitcoin Testnet for Bitcoin Cash daemons.'''
    NAME = "BitcoinCash"
    PEERS = [
        'electrum-testnet-abc.criptolayer.net s50112',
        'bchtestnet.arihanc.com t53001 s53002',
        'ciiattqkgzebpp6jofjbrkhvhwmgnsfoayljdcrve2p3qmkbv3duaoyd.onion '
        't53001 s53002',
    ]


class BitcoinCashRegtest(BitcoinCashTestnet):
    NET = "regtest"
    GENESIS_HASH = ('0f9188f13cb7b2c71f2a335e3a4fc328'
                    'bf5beb436012afca590b1a11466e2206')
    PEERS: List[str] = []
    TX_COUNT = 1
    TX_COUNT_HEIGHT = 1


class BitcoinSegwitTestnet(BitcoinTestnetMixin, Coin):
    '''Bitcoin Testnet for Core bitcoind >= 0.13.1.'''
    NAME = "BitcoinSegwit"
    DESERIALIZER = lib_tx.DeserializerSegWit
    PEERS = [
        'electrum.akinbo.org s t',
        'he36kyperp3kbuxu.onion s t',
        'testnet.hsmiths.com t53011 s53012',
        'hsmithsxurybd7uh.onion t53011 s53012',
        'testnetnode.arihanc.com s t',
        'w3e2orjpiiv2qwem3dw66d7c4krink4nhttngkylglpqe5r22n6n5wid.onion s t',
        'testnet.qtornado.com s t',
    ]


class BitcoinSegwitRegtest(BitcoinSegwitTestnet):
    NAME = "BitcoinSegwit"
    NET = "regtest"
    GENESIS_HASH = ('0f9188f13cb7b2c71f2a335e3a4fc328'
                    'bf5beb436012afca590b1a11466e2206')
    PEERS: List[str] = []
    TX_COUNT = 1
    TX_COUNT_HEIGHT = 1


class BitcoinNolnet(BitcoinCash):
    '''Bitcoin Unlimited nolimit testnet.'''
    NET = "nolnet"
    GENESIS_HASH = ('0000000057e31bd2066c939a63b7b862'
                    '3bd0f10d8c001304bdfc1a7902ae6d35')
    PEERS: List[str] = []
    REORG_LIMIT = 8000
    TX_COUNT = 583589
    TX_COUNT_HEIGHT = 8617
    TX_PER_BLOCK = 50
    RPC_PORT = 28332
    PEER_DEFAULT_PORTS = {'t': '52001', 's': '52002'}


class Litecoin(Coin):
    NAME = "Litecoin"
    SHORTNAME = "LTC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("30")
    P2SH_VERBYTES = [bytes.fromhex("32"), bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("b0")
    GENESIS_HASH = ('12a765e31ffd4059bada1e25190f6e98'
                    'c99d9714d334efa41a195a7e7e04bfe2')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 8908766
    TX_COUNT_HEIGHT = 1105256
    TX_PER_BLOCK = 10
    RPC_PORT = 9332
    REORG_LIMIT = 800
    PEERS = [
        'elec.luggs.co s444',
        'electrum-ltc.bysh.me s t',
        'electrum-ltc.ddns.net s t',
        'electrum-ltc.wilv.in s t',
        'electrum.cryptomachine.com p1000 s t',
        'electrum.ltc.xurious.com s t',
        'eywr5eubdbbe2laq.onion s50008 t50007',
    ]


class LitecoinTestnet(Litecoin):
    SHORTNAME = "XLT"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587cf")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("6f")
    P2SH_VERBYTES = [bytes.fromhex("3a"), bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("ef")
    GENESIS_HASH = ('4966625a4b2851d9fdee139e56211a0d'
                    '88575f59ed816ff5e6a63deb4e3e29a0')
    TX_COUNT = 21772
    TX_COUNT_HEIGHT = 20800
    TX_PER_BLOCK = 2
    RPC_PORT = 19332
    REORG_LIMIT = 4000
    PEER_DEFAULT_PORTS = {'t': '51001', 's': '51002'}
    PEERS = [
        'electrum-ltc.bysh.me s t',
        'electrum.ltc.xurious.com s t',
    ]


class Viacoin(AuxPowMixin, Coin):
    NAME = "Viacoin"
    SHORTNAME = "VIA"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("47")
    P2SH_VERBYTES = [bytes.fromhex("21")]
    WIF_BYTE = bytes.fromhex("c7")
    GENESIS_HASH = ('4e9b54001f9976049830128ec0331515'
                    'eaabe35a70970d79971da1539a400ba1')
    TX_COUNT = 113638
    TX_COUNT_HEIGHT = 3473674
    TX_PER_BLOCK = 30
    RPC_PORT = 5222
    REORG_LIMIT = 5000
    DESERIALIZER: Type = lib_tx.DeserializerAuxPowSegWit
    PEERS = [
        'vialectrum.bitops.me s t',
        'server.vialectrum.org s t',
        'vialectrum.viacoin.net s t',
        'viax1.bitops.me s t',
    ]


class ViacoinTestnet(Viacoin):
    SHORTNAME = "TVI"
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("7f")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("ff")
    GENESIS_HASH = ('00000007199508e34a9ff81e6ec0c477'
                    'a4cccff2a4767a8eee39c11db367b008')
    RPC_PORT = 25222
    REORG_LIMIT = 2500
    PEER_DEFAULT_PORTS = {'t': '51001', 's': '51002'}
    PEERS = [
        'vialectrum.bysh.me s t',
    ]


class ViacoinTestnetSegWit(ViacoinTestnet):
    NET = "testnet-segwit"
    DESERIALIZER = lib_tx.DeserializerSegWit


# Source: namecoin.org
class Namecoin(AuxPowMixin, Coin):
    NAME = "Namecoin"
    SHORTNAME = "NMC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("d7dd6370")
    XPRV_VERBYTES = bytes.fromhex("d7dc6e31")
    P2PKH_VERBYTE = bytes.fromhex("34")
    P2SH_VERBYTES = [bytes.fromhex("0d")]
    WIF_BYTE = bytes.fromhex("e4")
    GENESIS_HASH = ('000000000062b72c5e2ceb45fbc8587e'
                    '807c155b0da735e6483dfba2f0a9c770')
    TX_COUNT = 4415768
    TX_COUNT_HEIGHT = 329065
    TX_PER_BLOCK = 10
    PEERS = [
        'elec.luggs.co s446',
    ]
    BLOCK_PROCESSOR = block_proc.NamecoinBlockProcessor

    @classmethod
    def split_name_script(cls, script):
        from torba.server.script import _match_ops, Script, ScriptError

        try:
            ops = Script.get_ops(script)
        except ScriptError:
            return None, script

        match = _match_ops

        # Name opcodes
        OP_NAME_NEW = OpCodes.OP_1
        OP_NAME_FIRSTUPDATE = OpCodes.OP_2
        OP_NAME_UPDATE = OpCodes.OP_3

        # Opcode sequences for name operations
        NAME_NEW_OPS = [OP_NAME_NEW, -1, OpCodes.OP_2DROP]
        NAME_FIRSTUPDATE_OPS = [OP_NAME_FIRSTUPDATE, -1, -1, -1,
                                OpCodes.OP_2DROP, OpCodes.OP_2DROP]
        NAME_UPDATE_OPS = [OP_NAME_UPDATE, -1, -1, OpCodes.OP_2DROP,
                           OpCodes.OP_DROP]

        name_script_op_count = None
        name_pushdata = None

        # Detect name operations; determine count of opcodes.
        # Also extract the name field -- we might use that for something in a
        # future version.
        if match(ops[:len(NAME_NEW_OPS)], NAME_NEW_OPS):
            name_script_op_count = len(NAME_NEW_OPS)
        elif match(ops[:len(NAME_FIRSTUPDATE_OPS)], NAME_FIRSTUPDATE_OPS):
            name_script_op_count = len(NAME_FIRSTUPDATE_OPS)
            name_pushdata = ops[1]
        elif match(ops[:len(NAME_UPDATE_OPS)], NAME_UPDATE_OPS):
            name_script_op_count = len(NAME_UPDATE_OPS)
            name_pushdata = ops[1]

        if name_script_op_count is None:
            return None, script

        # Find the end position of the name data
        n = 0
        for i in range(name_script_op_count):
            # Content of this loop is copied from Script.get_ops's loop
            op = script[n]
            n += 1

            if op <= OpCodes.OP_PUSHDATA4:
                # Raw bytes follow
                if op < OpCodes.OP_PUSHDATA1:
                    dlen = op
                elif op == OpCodes.OP_PUSHDATA1:
                    dlen = script[n]
                    n += 1
                elif op == OpCodes.OP_PUSHDATA2:
                    dlen, = struct.unpack('<H', script[n: n + 2])
                    n += 2
                else:
                    dlen, = struct.unpack('<I', script[n: n + 4])
                    n += 4
                if n + dlen > len(script):
                    raise IndexError
                op = (op, script[n:n + dlen])
                n += dlen
        # Strip the name data to yield the address script
        address_script = script[n:]

        if name_pushdata is None:
            return None, address_script

        normalized_name_op_script = bytearray()
        normalized_name_op_script.append(OP_NAME_UPDATE)
        normalized_name_op_script.extend(Script.push_data(name_pushdata[1]))
        normalized_name_op_script.extend(Script.push_data(bytes([])))
        normalized_name_op_script.append(OpCodes.OP_2DROP)
        normalized_name_op_script.append(OpCodes.OP_DROP)
        normalized_name_op_script.append(OpCodes.OP_RETURN)

        return bytes(normalized_name_op_script), address_script

    @classmethod
    def hashX_from_script(cls, script):
        name_op_script, address_script = cls.split_name_script(script)

        return super().hashX_from_script(address_script)

    @classmethod
    def address_from_script(cls, script):
        name_op_script, address_script = cls.split_name_script(script)

        return super().address_from_script(address_script)

    @classmethod
    def name_hashX_from_script(cls, script):
        name_op_script, address_script = cls.split_name_script(script)

        if name_op_script is None:
            return None

        return super().hashX_from_script(name_op_script)


class NamecoinTestnet(Namecoin):
    NAME = "Namecoin"
    SHORTNAME = "XNM"
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("6f")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("ef")
    GENESIS_HASH = ('00000007199508e34a9ff81e6ec0c477'
                    'a4cccff2a4767a8eee39c11db367b008')


class Dogecoin(AuxPowMixin, Coin):
    NAME = "Dogecoin"
    SHORTNAME = "DOGE"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("02facafd")
    XPRV_VERBYTES = bytes.fromhex("02fac398")
    P2PKH_VERBYTE = bytes.fromhex("1e")
    P2SH_VERBYTES = [bytes.fromhex("16")]
    WIF_BYTE = bytes.fromhex("9e")
    GENESIS_HASH = ('1a91e3dace36e2be3bf030a65679fe82'
                    '1aa1d6ef92e7c9902eb318182c355691')
    TX_COUNT = 27583427
    TX_COUNT_HEIGHT = 1604979
    TX_PER_BLOCK = 20
    REORG_LIMIT = 2000


class DogecoinTestnet(Dogecoin):
    NAME = "Dogecoin"
    SHORTNAME = "XDT"
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("71")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("f1")
    GENESIS_HASH = ('bb0a78264637406b6360aad926284d54'
                    '4d7049f45189db5664f3c4d07350559e')


# Source: https://github.com/motioncrypto/motion
class Motion(Coin):
    NAME = "Motion"
    SHORTNAME = "XMN"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
    GENESIS_HASH = ('000001e9dc60dd2618e91f7b90141349'
                    '22c374496b61c1a272519b1c39979d78')
    P2PKH_VERBYTE = bytes.fromhex("32")
    P2SH_VERBYTES = [bytes.fromhex("12")]
    WIF_BYTE = bytes.fromhex("80")
    TX_COUNT_HEIGHT = 54353
    TX_COUNT = 92701
    TX_PER_BLOCK = 4
    RPC_PORT = 3385
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import x16r_hash
        return x16r_hash.getPoWHash(header)


# Source: https://github.com/dashpay/dash
class Dash(Coin):
    NAME = "Dash"
    SHORTNAME = "DASH"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("02fe52cc")
    XPRV_VERBYTES = bytes.fromhex("02fe52f8")
    GENESIS_HASH = ('00000ffd590b1485b3caadc19b22e637'
                    '9c733355108f107a430458cdf3407ab6')
    P2PKH_VERBYTE = bytes.fromhex("4c")
    P2SH_VERBYTES = [bytes.fromhex("10")]
    WIF_BYTE = bytes.fromhex("cc")
    TX_COUNT_HEIGHT = 569399
    TX_COUNT = 2157510
    TX_PER_BLOCK = 4
    RPC_PORT = 9998
    PEERS = [
        'electrum.dash.org s t',
        'electrum.masternode.io s t',
        'electrum-drk.club s t',
        'dashcrypto.space s t',
        'electrum.dash.siampm.com s t',
        'wl4sfwq2hwxnodof.onion s t',
    ]
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import x11_hash
        return x11_hash.getPoWHash(header)


class DashTestnet(Dash):
    SHORTNAME = "tDASH"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("3a805837")
    XPRV_VERBYTES = bytes.fromhex("3a8061a0")
    GENESIS_HASH = ('00000bafbc94add76cb75e2ec9289483'
                    '7288a481e5c005f6563d91623bf8bc2c')
    P2PKH_VERBYTE = bytes.fromhex("8c")
    P2SH_VERBYTES = [bytes.fromhex("13")]
    WIF_BYTE = bytes.fromhex("ef")
    TX_COUNT_HEIGHT = 101619
    TX_COUNT = 132681
    TX_PER_BLOCK = 1
    RPC_PORT = 19998
    PEER_DEFAULT_PORTS = {'t': '51001', 's': '51002'}
    PEERS = [
        'electrum.dash.siampm.com s t',
        'dasht.random.re s54002 t54001',
    ]


class Argentum(AuxPowMixin, Coin):
    NAME = "Argentum"
    SHORTNAME = "ARG"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("17")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("97")
    GENESIS_HASH = ('88c667bc63167685e4e4da058fffdfe8'
                    'e007e5abffd6855de52ad59df7bb0bb2')
    TX_COUNT = 2263089
    TX_COUNT_HEIGHT = 2050260
    TX_PER_BLOCK = 2000
    RPC_PORT = 13581


class ArgentumTestnet(Argentum):
    SHORTNAME = "XRG"
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("6f")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("ef")
    REORG_LIMIT = 2000


class DigiByte(Coin):
    NAME = "DigiByte"
    SHORTNAME = "DGB"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("1E")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('7497ea1b465eb39f1c8f507bc877078f'
                    'e016d6fcb6dfad3a64c98dcc6e1e8496')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 1046018
    TX_COUNT_HEIGHT = 1435000
    TX_PER_BLOCK = 1000
    RPC_PORT = 12022


class DigiByteTestnet(DigiByte):
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("6f")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("ef")
    GENESIS_HASH = ('b5dca8039e300198e5fe7cd23bdd1728'
                    'e2a444af34c447dbd0916fa3430a68c2')
    RPC_PORT = 15022
    REORG_LIMIT = 2000


class FairCoin(Coin):
    NAME = "FairCoin"
    SHORTNAME = "FAIR"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("5f")
    P2SH_VERBYTES = [bytes.fromhex("24")]
    WIF_BYTE = bytes.fromhex("df")
    GENESIS_HASH = ('beed44fa5e96150d95d56ebd5d262578'
                    '1825a9407a5215dd7eda723373a0a1d7')
    BASIC_HEADER_SIZE = 108
    HEADER_VALUES = ['version', 'prev_block_hash', 'merkle_root',
                     'payload_hash', 'timestamp', 'creatorId']
    HEADER_UNPACK = struct.Struct('< I 32s 32s 32s I I').unpack_from
    TX_COUNT = 505
    TX_COUNT_HEIGHT = 470
    TX_PER_BLOCK = 1
    RPC_PORT = 40405
    PEER_DEFAULT_PORTS = {'t': '51811', 's': '51812'}
    PEERS = [
        'electrum.faircoin.world s',
        'electrumfair.punto0.org s',
    ]

    @classmethod
    def block(cls, raw_block, height):
        '''Return a Block namedtuple given a raw block and its height.'''
        if height > 0:
            return super().block(raw_block, height)
        else:
            return Block(raw_block, cls.block_header(raw_block, height), [])

    @classmethod
    def electrum_header(cls, header, height):
        h = super().electrum_header(header, height)
        h['payload_hash'] = hash_to_hex_str(h['payload_hash'])
        return h


class Zcash(EquihashMixin, Coin):
    NAME = "Zcash"
    SHORTNAME = "ZEC"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("1CB8")
    P2SH_VERBYTES = [bytes.fromhex("1CBD")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('00040fe8ec8471911baa1db1266ea15d'
                    'd06b4a8a5c453883c000b031973dce08')
    DESERIALIZER = lib_tx.DeserializerZcash
    TX_COUNT = 329196
    TX_COUNT_HEIGHT = 68379
    TX_PER_BLOCK = 5
    RPC_PORT = 8232
    REORG_LIMIT = 800


class ZcashTestnet(Zcash):
    SHORTNAME = "TAZ"
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("1D25")
    P2SH_VERBYTES = [bytes.fromhex("1CBA")]
    WIF_BYTE = bytes.fromhex("EF")
    GENESIS_HASH = ('05a60a92d99d85997cce3b87616c089f'
                    '6124d7342af37106edc76126334a2c38')
    TX_COUNT = 242312
    TX_COUNT_HEIGHT = 321685
    TX_PER_BLOCK = 2
    RPC_PORT = 18232


class SnowGem(EquihashMixin, Coin):
    NAME = "SnowGem"
    SHORTNAME = "SNG"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("1C28")
    P2SH_VERBYTES = [bytes.fromhex("1C2D")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('00068b35729d9d2b0c294ff1fe9af009'
                    '4740524311a131de40e7f705e4c29a5b')
    DESERIALIZER = lib_tx.DeserializerZcash
    TX_COUNT = 140698
    TX_COUNT_HEIGHT = 102802
    TX_PER_BLOCK = 2
    RPC_PORT = 16112
    REORG_LIMIT = 800
    CHUNK_SIZE = 200

    @classmethod
    def electrum_header(cls, header, height):
        h = super().electrum_header(header, height)
        h['n_solution'] = base64.b64encode(lib_tx.Deserializer(
            header, start=140)._read_varbytes()).decode('utf8')
        return h


class BitcoinZ(EquihashMixin, Coin):
    NAME = "BitcoinZ"
    SHORTNAME = "BTCZ"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("1CB8")
    P2SH_VERBYTES = [bytes.fromhex("1CBD")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('f499ee3d498b4298ac6a64205b8addb7'
                    'c43197e2a660229be65db8a4534d75c1')
    DESERIALIZER = lib_tx.DeserializerZcash
    TX_COUNT = 171976
    TX_COUNT_HEIGHT = 81323
    TX_PER_BLOCK = 3
    RPC_PORT = 1979
    REORG_LIMIT = 800


class Hush(EquihashMixin, Coin):
    NAME = "Hush"
    SHORTNAME = "HUSH"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("1CB8")
    P2SH_VERBYTES = [bytes.fromhex("1CBD")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('0003a67bc26fe564b75daf11186d3606'
                    '52eb435a35ba3d9d3e7e5d5f8e62dc17')
    DESERIALIZER = lib_tx.DeserializerZcash
    TX_COUNT = 329196
    TX_COUNT_HEIGHT = 68379
    TX_PER_BLOCK = 5
    RPC_PORT = 8822
    REORG_LIMIT = 800


class Zclassic(EquihashMixin, Coin):
    NAME = "Zclassic"
    SHORTNAME = "ZCL"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("1CB8")
    P2SH_VERBYTES = [bytes.fromhex("1CBD")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('0007104ccda289427919efc39dc9e4d4'
                    '99804b7bebc22df55f8b834301260602')
    DESERIALIZER = lib_tx.DeserializerZcash
    TX_COUNT = 329196
    TX_COUNT_HEIGHT = 68379
    TX_PER_BLOCK = 5
    RPC_PORT = 8023
    REORG_LIMIT = 800


class Koto(Coin):
    NAME = "Koto"
    SHORTNAME = "KOTO"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("1836")
    P2SH_VERBYTES = [bytes.fromhex("183B")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('6d424c350729ae633275d51dc3496e16'
                    'cd1b1d195c164da00f39c499a2e9959e')
    DESERIALIZER = lib_tx.DeserializerZcash
    TX_COUNT = 158914
    TX_COUNT_HEIGHT = 67574
    TX_PER_BLOCK = 3
    RPC_PORT = 8432
    REORG_LIMIT = 800
    PEERS = [
        'fr.kotocoin.info s t',
        'electrum.kotocoin.info s t',
    ]


class KotoTestnet(Koto):
    SHORTNAME = "TOKO"
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("18A4")
    P2SH_VERBYTES = [bytes.fromhex("1839")]
    WIF_BYTE = bytes.fromhex("EF")
    GENESIS_HASH = ('bf84afbde20c2d213b68b231ddb585ab'
                    '616ef7567226820f00d9b397d774d2f0')
    TX_COUNT = 91144
    TX_COUNT_HEIGHT = 89662
    TX_PER_BLOCK = 1
    RPC_PORT = 18432
    PEER_DEFAULT_PORTS = {'t': '51001', 's': '51002'}
    PEERS = [
        'testnet.kotocoin.info s t',
    ]


class Komodo(KomodoMixin, EquihashMixin, Coin):
    NAME = "Komodo"
    SHORTNAME = "KMD"
    NET = "mainnet"
    TX_COUNT = 693629
    TX_COUNT_HEIGHT = 491777
    TX_PER_BLOCK = 2
    RPC_PORT = 7771
    REORG_LIMIT = 800
    PEERS: List[str] = []


class Monaize(KomodoMixin, EquihashMixin, Coin):
    NAME = "Monaize"
    SHORTNAME = "MNZ"
    NET = "mainnet"
    TX_COUNT = 256
    TX_COUNT_HEIGHT = 128
    TX_PER_BLOCK = 2
    RPC_PORT = 14337
    REORG_LIMIT = 800
    PEERS: List[str] = []


class Einsteinium(Coin):
    NAME = "Einsteinium"
    SHORTNAME = "EMC2"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("21")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("b0")
    GENESIS_HASH = ('4e56204bb7b8ac06f860ff1c845f03f9'
                    '84303b5b97eb7b42868f714611aed94b')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 2087559
    TX_COUNT_HEIGHT = 1358517
    TX_PER_BLOCK = 2
    RPC_PORT = 41879
    REORG_LIMIT = 2000


class Blackcoin(ScryptMixin, Coin):
    NAME = "Blackcoin"
    SHORTNAME = "BLK"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("19")
    P2SH_VERBYTES = [bytes.fromhex("55")]
    WIF_BYTE = bytes.fromhex("99")
    GENESIS_HASH = ('000001faef25dec4fbcf906e6242621d'
                    'f2c183bf232f263d0ba5b101911e4563')
    DAEMON = daemon.LegacyRPCDaemon
    TX_COUNT = 4594999
    TX_COUNT_HEIGHT = 1667070
    TX_PER_BLOCK = 3
    RPC_PORT = 15715
    REORG_LIMIT = 5000


class Bitbay(ScryptMixin, Coin):
    NAME = "Bitbay"
    SHORTNAME = "BAY"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("19")
    P2SH_VERBYTES = [bytes.fromhex("55")]
    WIF_BYTE = bytes.fromhex("99")
    GENESIS_HASH = ('0000075685d3be1f253ce777174b1594'
                    '354e79954d2a32a6f77fe9cba00e6467')
    TX_COUNT = 4594999
    TX_COUNT_HEIGHT = 1667070
    TX_PER_BLOCK = 3
    RPC_PORT = 19914
    REORG_LIMIT = 5000


class Peercoin(Coin):
    NAME = "Peercoin"
    SHORTNAME = "PPC"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("37")
    P2SH_VERBYTES = [bytes.fromhex("75")]
    WIF_BYTE = bytes.fromhex("b7")
    GENESIS_HASH = ('0000000032fe677166d54963b62a4677'
                    'd8957e87c508eaa4fd7eb1c880cd27e3')
    DESERIALIZER = lib_tx.DeserializerTxTime
    DAEMON = daemon.LegacyRPCDaemon
    TX_COUNT = 1207356
    TX_COUNT_HEIGHT = 306425
    TX_PER_BLOCK = 4
    RPC_PORT = 9902
    REORG_LIMIT = 5000


class Reddcoin(Coin):
    NAME = "Reddcoin"
    SHORTNAME = "RDD"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("3d")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("bd")
    GENESIS_HASH = ('b868e0d95a3c3c0e0dadc67ee587aaf9'
                    'dc8acbf99e3b4b3110fad4eb74c1decc')
    DESERIALIZER = lib_tx.DeserializerReddcoin
    TX_COUNT = 5413508
    TX_COUNT_HEIGHT = 1717382
    TX_PER_BLOCK = 3
    RPC_PORT = 45443


class TokenPay(ScryptMixin, Coin):
    NAME = "TokenPay"
    SHORTNAME = "TPAY"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("41")
    P2SH_VERBYTES = [bytes.fromhex("7e")]
    WIF_BYTE = bytes.fromhex("b3")
    GENESIS_HASH = ('000008b71ab32e585a23f0de642dc113'
                    '740144e94c0ece047751e9781f953ae9')
    DESERIALIZER = lib_tx.DeserializerTokenPay
    DAEMON = daemon.LegacyRPCDaemon
    TX_COUNT = 147934
    TX_COUNT_HEIGHT = 73967
    TX_PER_BLOCK = 100
    RPC_PORT = 8800
    REORG_LIMIT = 500
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")

    PEERS = [
        "electrum-us.tpay.ai s",
        "electrum-eu.tpay.ai s",
    ]


class Vertcoin(Coin):
    NAME = "Vertcoin"
    SHORTNAME = "VTC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
    P2PKH_VERBYTE = bytes.fromhex("47")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('4d96a915f49d40b1e5c2844d1ee2dccb'
                    '90013a990ccea12c492d22110489f0c4')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 2383423
    TX_COUNT_HEIGHT = 759076
    TX_PER_BLOCK = 3
    RPC_PORT = 5888
    REORG_LIMIT = 1000


class Monacoin(Coin):
    NAME = "Monacoin"
    SHORTNAME = "MONA"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
    P2PKH_VERBYTE = bytes.fromhex("32")
    P2SH_VERBYTES = [bytes.fromhex("37"), bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("B0")
    GENESIS_HASH = ('ff9f1c0116d19de7c9963845e129f9ed'
                    '1bfc0b376eb54fd7afa42e0d418c8bb6')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 2568580
    TX_COUNT_HEIGHT = 1029766
    TX_PER_BLOCK = 2
    RPC_PORT = 9402
    REORG_LIMIT = 1000
    PEERS = [
        'electrumx.tamami-foundation.org s t',
        'electrumx2.tamami-foundation.org s t',
        'electrumx3.tamami-foundation.org s t',
        'electrumx1.monacoin.nl s t',
        'electrumx2.monacoin.nl s t',
        'electrumx1.monacoin.ninja s t',
        'electrumx2.monacoin.ninja s t',
        'electrumx2.movsign.info s t',
        'electrum-mona.bitbank.cc s t',
        'ri7rzlmdaf4eqbza.onion s t',
    ]


class MonacoinTestnet(Monacoin):
    SHORTNAME = "XMN"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587CF")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("6F")
    P2SH_VERBYTES = [bytes.fromhex("75"), bytes.fromhex("C4")]
    WIF_BYTE = bytes.fromhex("EF")
    GENESIS_HASH = ('a2b106ceba3be0c6d097b2a6a6aacf9d'
                    '638ba8258ae478158f449c321061e0b2')
    TX_COUNT = 83602
    TX_COUNT_HEIGHT = 83252
    TX_PER_BLOCK = 1
    RPC_PORT = 19402
    REORG_LIMIT = 1000
    PEER_DEFAULT_PORTS = {'t': '51001', 's': '51002'}
    PEERS = [
        'electrumx1.testnet.monacoin.ninja s t',
        'electrumx1.testnet.monacoin.nl s t',
    ]


class Crown(AuxPowMixin, Coin):
    NAME = "Crown"
    SHORTNAME = "CRW"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("00")
    P2SH_VERBYTES = [bytes.fromhex("1c")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('0000000085370d5e122f64f4ab19c686'
                    '14ff3df78c8d13cb814fd7e69a1dc6da')
    TX_COUNT = 13336629
    TX_COUNT_HEIGHT = 1268206
    TX_PER_BLOCK = 10
    RPC_PORT = 9341
    REORG_LIMIT = 1000
    PEERS = [
        'sgp-crwseed.crowndns.info s t',
        'blr-crwseed.crowndns.info s t',
        'sfo-crwseed.crowndns.info s t',
        'nyc-crwseed.crowndns.info s t',
        'ams-crwseed.crowndns.info s t',
        'tor-crwseed.crowndns.info s t',
        'lon-crwseed.crowndns.info s t',
        'fra-crwseed.crowndns.info s t',
    ]


class Fujicoin(Coin):
    NAME = "Fujicoin"
    SHORTNAME = "FJC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("24")
    P2SH_VERBYTES = [bytes.fromhex("10")]
    WIF_BYTE = bytes.fromhex("a4")
    GENESIS_HASH = ('adb6d9cfd74075e7f91608add4bd2a2e'
                    'a636f70856183086842667a1597714a0')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 170478
    TX_COUNT_HEIGHT = 1521676
    TX_PER_BLOCK = 1
    RPC_PORT = 3776
    REORG_LIMIT = 1000


class Neblio(ScryptMixin, Coin):
    NAME = "Neblio"
    SHORTNAME = "NEBL"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("35")
    P2SH_VERBYTES = [bytes.fromhex("70")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('7286972be4dbc1463d256049b7471c25'
                    '2e6557e222cab9be73181d359cd28bcc')
    TX_COUNT = 23675
    TX_COUNT_HEIGHT = 22785
    TX_PER_BLOCK = 1
    RPC_PORT = 6326
    REORG_LIMIT = 1000


class Bitzeny(Coin):
    NAME = "Bitzeny"
    SHORTNAME = "ZNY"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("51")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('000009f7e55e9e3b4781e22bd87a7cfa'
                    '4acada9e4340d43ca738bf4e9fb8f5ce')
    ESTIMATE_FEE = 0.001
    RELAY_FEE = 0.001
    DAEMON = daemon.FakeEstimateFeeDaemon
    TX_COUNT = 1408733
    TX_COUNT_HEIGHT = 1015115
    TX_PER_BLOCK = 1
    RPC_PORT = 9252
    REORG_LIMIT = 1000

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import zny_yescrypt
        return zny_yescrypt.getPoWHash(header)


class CanadaeCoin(AuxPowMixin, Coin):
    NAME = "CanadaeCoin"
    SHORTNAME = "CDN"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("1C")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("9c")
    GENESIS_HASH = ('863626dadaef221e2e2f30ff3dacae44'
                    'cabdae9e0028058072181b3fb675d94a')
    ESTIMATE_FEE = 0.0001
    RELAY_FEE = 0.0001
    DAEMON = daemon.FakeEstimateFeeDaemon
    TX_COUNT = 3455905
    TX_COUNT_HEIGHT = 3645419
    TX_PER_BLOCK = 1
    RPC_PORT = 34330
    REORG_LIMIT = 1000


class Denarius(Coin):
    NAME = "Denarius"
    SHORTNAME = "DNR"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("1E")  # Address starts with a D
    P2SH_VERBYTES = [bytes.fromhex("5A")]
    WIF_BYTE = bytes.fromhex("9E")  # WIF starts with a 6
    GENESIS_HASH = ('00000d5dbbda01621cfc16bbc1f9bf32'
                    '64d641a5dbf0de89fd0182c2c4828fcd')
    DESERIALIZER = lib_tx.DeserializerTxTime
    TX_COUNT = 4230
    RPC_PORT = 32339
    ESTIMATE_FEE = 0.00001
    RELAY_FEE = 0.00001
    DAEMON = daemon.FakeEstimateFeeDaemon
    TX_COUNT_HEIGHT = 306187
    TX_PER_BLOCK = 4000

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import tribus_hash
        return tribus_hash.getPoWHash(header)


class DenariusTestnet(Denarius):
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587cf")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("12")
    P2SH_VERBYTES = [bytes.fromhex("74")]
    WIF_BYTE = bytes.fromhex("ef")
    GENESIS_HASH = ('000086bfe8264d241f7f8e5393f74778'
                    '4b8ca2aa98bdd066278d590462a4fdb4')
    RPC_PORT = 32338
    REORG_LIMIT = 2000


class Sibcoin(Dash):
    NAME = "Sibcoin"
    SHORTNAME = "SIB"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("3F")
    P2SH_VERBYTES = [bytes.fromhex("28")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('00000c492bf73490420868bc577680bf'
                    'c4c60116e7e85343bc624787c21efa4c')
    DAEMON = daemon.DashDaemon
    TX_COUNT = 1000
    TX_COUNT_HEIGHT = 10000
    TX_PER_BLOCK = 1
    RPC_PORT = 1944
    REORG_LIMIT = 1000
    PEERS: List[str] = []

    @classmethod
    def header_hash(cls, header):
        '''
        Given a header return the hash for sibcoin.
        Need to download `x11_gost_hash` module
        Source code: https://github.com/ivansib/x11_gost_hash
        '''
        import x11_gost_hash
        return x11_gost_hash.getPoWHash(header)


class Chips(Coin):
    NAME = "Chips"
    SHORTNAME = "CHIPS"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("3c")
    P2SH_VERBYTES = [bytes.fromhex("55")]
    WIF_BYTE = bytes.fromhex("bc")
    GENESIS_HASH = ('0000006e75f6aa0efdbf7db03132aa4e'
                    '4d0c84951537a6f5a7c39a0a9d30e1e7')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 145290
    TX_COUNT_HEIGHT = 318637
    TX_PER_BLOCK = 2
    RPC_PORT = 57776
    REORG_LIMIT = 800


class Feathercoin(Coin):
    NAME = "Feathercoin"
    SHORTNAME = "FTC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488BC26")
    XPRV_VERBYTES = bytes.fromhex("0488DAEE")
    P2PKH_VERBYTE = bytes.fromhex("0E")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("8E")
    GENESIS_HASH = ('12a765e31ffd4059bada1e25190f6e98'
                    'c99d9714d334efa41a195a7e7e04bfe2')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 3170843
    TX_COUNT_HEIGHT = 1981777
    TX_PER_BLOCK = 2
    RPC_PORT = 9337
    REORG_LIMIT = 2000
    PEERS = [
        'electrumx-ch-1.feathercoin.ch s t',
    ]


class UFO(Coin):
    NAME = "UniformFiscalObject"
    SHORTNAME = "UFO"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
    P2PKH_VERBYTE = bytes.fromhex("1B")
    P2SH_VERBYTES = [bytes.fromhex("44")]
    WIF_BYTE = bytes.fromhex("9B")
    GENESIS_HASH = ('ba1d39b4928ab03d813d952daf65fb77'
                    '97fcf538a9c1b8274f4edc8557722d13')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 1608926
    TX_COUNT_HEIGHT = 1300154
    TX_PER_BLOCK = 2
    RPC_PORT = 9888
    REORG_LIMIT = 2000
    PEERS = [
        'electrumx1.ufobject.com s t',
    ]


class Newyorkcoin(AuxPowMixin, Coin):
    NAME = "Newyorkcoin"
    SHORTNAME = "NYC"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("3c")
    P2SH_VERBYTES = [bytes.fromhex("16")]
    WIF_BYTE = bytes.fromhex("bc")
    GENESIS_HASH = ('5597f25c062a3038c7fd815fe46c67de'
                    'dfcb3c839fbc8e01ed4044540d08fe48')
    TX_COUNT = 5161944
    TX_COUNT_HEIGHT = 3948743
    TX_PER_BLOCK = 2
    REORG_LIMIT = 2000


class NewyorkcoinTestnet(Newyorkcoin):
    SHORTNAME = "tNYC"
    NET = "testnet"
    P2PKH_VERBYTE = bytes.fromhex("71")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("f1")
    GENESIS_HASH = ('24463e4d3c625b0a9059f309044c2cf0'
                    'd7e196cf2a6ecce901f24f681be33c8f')
    TX_COUNT = 5161944
    TX_COUNT_HEIGHT = 3948743
    TX_PER_BLOCK = 2
    REORG_LIMIT = 2000


class Bitcore(BitcoinMixin, Coin):
    NAME = "Bitcore"
    SHORTNAME = "BTX"
    P2PKH_VERBYTE = bytes.fromhex("03")
    P2SH_VERBYTES = [bytes.fromhex("7D")]
    WIF_BYTE = bytes.fromhex("80")
    DESERIALIZER = lib_tx.DeserializerSegWit
    GENESIS_HASH = ('604148281e5c4b7f2487e5d03cd60d8e'
                    '6f69411d613f6448034508cea52e9574')
    TX_COUNT = 126979
    TX_COUNT_HEIGHT = 126946
    TX_PER_BLOCK = 2
    RPC_PORT = 8556


class GameCredits(Coin):
    NAME = "GameCredits"
    SHORTNAME = "GAME"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("26")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("a6")
    GENESIS_HASH = ('91ec5f25ee9a0ffa1af7d4da4db9a552'
                    '228dd2dc77cdb15b738be4e1f55f30ee')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 316796
    TX_COUNT_HEIGHT = 2040250
    TX_PER_BLOCK = 2
    RPC_PORT = 40001
    REORG_LIMIT = 1000


class Machinecoin(Coin):
    NAME = "Machinecoin"
    SHORTNAME = "MAC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("32")
    P2SH_VERBYTES = [bytes.fromhex("26"), bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("b2")
    GENESIS_HASH = ('6a1f879bcea5471cbfdee1fd0cb2ddcc'
                    '4fed569a500e352d41de967703e83172')
    DESERIALIZER = lib_tx.DeserializerSegWit
    TX_COUNT = 137641
    TX_COUNT_HEIGHT = 513020
    TX_PER_BLOCK = 2
    RPC_PORT = 40332
    REORG_LIMIT = 800


class BitcoinAtom(Coin):
    NAME = "BitcoinAtom"
    SHORTNAME = "BCA"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("17")
    P2SH_VERBYTES = [bytes.fromhex("0a")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('000000000019d6689c085ae165831e93'
                    '4ff763ae46a2a6c172b3f1b60a8ce26f')
    STATIC_BLOCK_HEADERS = False
    DESERIALIZER = lib_tx.DeserializerBitcoinAtom
    HEADER_SIZE_POST_FORK = 84
    BLOCK_PROOF_OF_STAKE = 0x01
    BLOCK_PROOF_OF_STAKE_FLAGS = b'\x01\x00\x00\x00'
    TX_COUNT = 295158744
    TX_COUNT_HEIGHT = 589197
    TX_PER_BLOCK = 10
    RPC_PORT = 9136
    REORG_LIMIT = 5000

    @classmethod
    def header_hash(cls, header):
        '''Given a header return hash'''
        header_to_be_hashed = header[:cls.BASIC_HEADER_SIZE]
        # New block header format has some extra flags in the end
        if len(header) == cls.HEADER_SIZE_POST_FORK:
            flags, = util.unpack_le_uint32_from(header, len(header) - 4)
            # Proof of work blocks have special serialization
            if flags & cls.BLOCK_PROOF_OF_STAKE != 0:
                header_to_be_hashed += cls.BLOCK_PROOF_OF_STAKE_FLAGS

        return double_sha256(header_to_be_hashed)

    @classmethod
    def block_header(cls, block, height):
        '''Return the block header bytes'''
        deserializer = cls.DESERIALIZER(block)
        return deserializer.read_header(height, cls.BASIC_HEADER_SIZE)


class Decred(Coin):
    NAME = "Decred"
    SHORTNAME = "DCR"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("02fda926")
    XPRV_VERBYTES = bytes.fromhex("02fda4e8")
    P2PKH_VERBYTE = bytes.fromhex("073f")
    P2SH_VERBYTES = [bytes.fromhex("071a")]
    WIF_BYTE = bytes.fromhex("22de")
    GENESIS_HASH = ('298e5cc3d985bfe7f81dc135f360abe0'
                    '89edd4396b86d2de66b0cef42b21d980')
    BASIC_HEADER_SIZE = 180
    HEADER_HASH = lib_tx.DeserializerDecred.blake256
    DESERIALIZER = lib_tx.DeserializerDecred
    DAEMON = daemon.DecredDaemon
    BLOCK_PROCESSOR = block_proc.DecredBlockProcessor
    ENCODE_CHECK = partial(Base58.encode_check,
                           hash_fn=lib_tx.DeserializerDecred.blake256d)
    DECODE_CHECK = partial(Base58.decode_check,
                           hash_fn=lib_tx.DeserializerDecred.blake256d)
    HEADER_VALUES = ['version', 'prev_block_hash', 'merkle_root', 'stake_root',
                     'vote_bits', 'final_state', 'voters', 'fresh_stake',
                     'revocations', 'pool_size', 'bits', 'sbits',
                     'block_height', 'size', 'timestamp', 'nonce',
                     'extra_data', 'stake_version']
    HEADER_UNPACK = struct.Struct(
        '< i 32s 32s 32s H 6s H B B I I Q I I I I 32s I').unpack_from
    TX_COUNT = 4629388
    TX_COUNT_HEIGHT = 260628
    TX_PER_BLOCK = 17
    REORG_LIMIT = 1000
    RPC_PORT = 9109

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        return cls.HEADER_HASH(header)

    @classmethod
    def block(cls, raw_block, height):
        '''Return a Block namedtuple given a raw block and its height.'''
        if height > 0:
            return super().block(raw_block, height)
        else:
            return Block(raw_block, cls.block_header(raw_block, height), [])

    @classmethod
    def electrum_header(cls, header, height):
        h = super().electrum_header(header, height)
        h['stake_root'] = hash_to_hex_str(h['stake_root'])
        h['final_state'] = hash_to_hex_str(h['final_state'])
        h['extra_data'] = hash_to_hex_str(h['extra_data'])
        return h


class DecredTestnet(Decred):
    SHORTNAME = "tDCR"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587d1")
    XPRV_VERBYTES = bytes.fromhex("04358397")
    P2PKH_VERBYTE = bytes.fromhex("0f21")
    P2SH_VERBYTES = [bytes.fromhex("0efc")]
    WIF_BYTE = bytes.fromhex("230e")
    GENESIS_HASH = (
        'a649dce53918caf422e9c711c858837e08d626ecfcd198969b24f7b634a49bac')
    BASIC_HEADER_SIZE = 180
    ALLOW_ADVANCING_ERRORS = True
    TX_COUNT = 217380620
    TX_COUNT_HEIGHT = 464000
    TX_PER_BLOCK = 1800
    REORG_LIMIT = 1000
    RPC_PORT = 19109


class Axe(Dash):
    NAME = "Axe"
    SHORTNAME = "AXE"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("02fe52cc")
    XPRV_VERBYTES = bytes.fromhex("02fe52f8")
    P2PKH_VERBYTE = bytes.fromhex("37")
    P2SH_VERBYTES = [bytes.fromhex("10")]
    WIF_BYTE = bytes.fromhex("cc")
    GENESIS_HASH = ('00000c33631ca6f2f61368991ce2dc03'
                    '306b5bb50bf7cede5cfbba6db38e52e6')
    DAEMON = daemon.DashDaemon
    TX_COUNT = 18405
    TX_COUNT_HEIGHT = 30237
    TX_PER_BLOCK = 1
    RPC_PORT = 9337
    REORG_LIMIT = 1000
    PEERS: List[str] = []

    @classmethod
    def header_hash(cls, header):
        '''
        Given a header return the hash for AXE.
        Need to download `axe_hash` module
        Source code: https://github.com/AXErunners/axe_hash
        '''
        import x11_hash
        return x11_hash.getPoWHash(header)


class Xuez(Coin):
    NAME = "Xuez"
    SHORTNAME = "XUEZ"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("022d2533")
    XPRV_VERBYTES = bytes.fromhex("0221312b")
    P2PKH_VERBYTE = bytes.fromhex("48")
    P2SH_VERBYTES = [bytes.fromhex("12")]
    WIF_BYTE = bytes.fromhex("d4")
    GENESIS_HASH = ('000000e1febc39965b055e8e0117179a'
                    '4d18e24e7aaa0c69864c4054b4f29445')
    TX_COUNT = 30000
    TX_COUNT_HEIGHT = 15000
    TX_PER_BLOCK = 1
    RPC_PORT = 41799
    REORG_LIMIT = 1000
    BASIC_HEADER_SIZE = 112
    PEERS: List[str] = []

    @classmethod
    def header_hash(cls, header):
        '''
        Given a header return the hash for Xuez.
        Need to download `xevan_hash` module
        Source code: https://github.com/xuez/xuez
        '''
        version, = util.unpack_le_uint32_from(header)

        import xevan_hash

        if version == 1:
            return xevan_hash.getPoWHash(header[:80])
        else:
            return xevan_hash.getPoWHash(header)

    @classmethod
    def electrum_header(cls, header, height):
        h = super().electrum_header(header, height)
        if h['version'] > 1:
            h['nAccumulatorCheckpoint'] = hash_to_hex_str(header[80:])
        return h


class Pac(Coin):
    NAME = "PAC"
    SHORTNAME = "PAC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
    GENESIS_HASH = ('00000354655ff039a51273fe61d3b493'
                    'bd2897fe6c16f732dbc4ae19f04b789e')
    P2PKH_VERBYTE = bytes.fromhex("37")
    P2SH_VERBYTES = [bytes.fromhex("0A")]
    WIF_BYTE = bytes.fromhex("CC")
    TX_COUNT_HEIGHT = 14939
    TX_COUNT = 23708
    TX_PER_BLOCK = 2
    RPC_PORT = 7111
    PEERS = [
        'electrum.paccoin.io s t',
        'electro-pac.paccoin.io s t'
    ]
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon
    ESTIMATE_FEE = 0.00001
    RELAY_FEE = 0.00001

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import x11_hash
        return x11_hash.getPoWHash(header)


class PacTestnet(Pac):
    SHORTNAME = "tPAC"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587CF")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    GENESIS_HASH = ('00000da63bd9478b655ef6bf1bf76cd9'
                    'af05202ab68643f9091e049b2b5280ed')
    P2PKH_VERBYTE = bytes.fromhex("78")
    P2SH_VERBYTES = [bytes.fromhex("0E")]
    WIF_BYTE = bytes.fromhex("EF")
    TX_COUNT_HEIGHT = 16275
    TX_COUNT = 16275
    TX_PER_BLOCK = 1
    RPC_PORT = 17111


class Polis(Coin):
    NAME = "Polis"
    SHORTNAME = "POLIS"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("03E25D7E")
    XPRV_VERBYTES = bytes.fromhex("03E25945")
    GENESIS_HASH = ('000009701eb781a8113b1af1d814e2f0'
                    '60f6408a2c990db291bc5108a1345c1e')
    P2PKH_VERBYTE = bytes.fromhex("37")
    P2SH_VERBYTES = [bytes.fromhex("38")]
    WIF_BYTE = bytes.fromhex("3c")
    TX_COUNT_HEIGHT = 111111
    TX_COUNT = 256128
    TX_PER_BLOCK = 4
    RPC_PORT = 24127
    PEERS = [
        'electrum1-polis.polispay.org',
        'electrum2-polis.polispay.org'
    ]
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import x11_hash
        return x11_hash.getPoWHash(header)


class ColossusXT(Coin):
    NAME = "ColossusXT"
    SHORTNAME = "COLX"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("022D2533")
    XPRV_VERBYTES = bytes.fromhex("0221312B")
    GENESIS_HASH = ('a0ce8206c908357008c1b9a8ba2813af'
                    'f0989ca7f72d62b14e652c55f02b4f5c')
    P2PKH_VERBYTE = bytes.fromhex("1E")
    P2SH_VERBYTES = [bytes.fromhex("0D")]
    WIF_BYTE = bytes.fromhex("D4")
    TX_COUNT_HEIGHT = 356500
    TX_COUNT = 761041
    TX_PER_BLOCK = 4
    RPC_PORT = 51473
    PEERS = [
        'electrum1-colx.polispay.org',
        'electrum2-colx.polispay.org'
    ]
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import quark_hash
        return quark_hash.getPoWHash(header)


class GoByte(Coin):
    NAME = "GoByte"
    SHORTNAME = "GBX"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
    GENESIS_HASH = ('0000033b01055cf8df90b01a14734cae'
                    '92f7039b9b0e48887b4e33a469d7bc07')
    P2PKH_VERBYTE = bytes.fromhex("26")
    P2SH_VERBYTES = [bytes.fromhex("0A")]
    WIF_BYTE = bytes.fromhex("C6")
    TX_COUNT_HEIGHT = 115890
    TX_COUNT = 245030
    TX_PER_BLOCK = 4
    RPC_PORT = 12454
    PEERS = [
        'electrum1-gbx.polispay.org',
        'electrum2-gbx.polispay.org'
    ]
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import neoscrypt
        return neoscrypt.getPoWHash(header)


class Monoeci(Coin):
    NAME = "Monoeci"
    SHORTNAME = "XMCC"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488B21E")
    XPRV_VERBYTES = bytes.fromhex("0488ADE4")
    GENESIS_HASH = ('0000005be1eb05b05fb45ae38ee9c144'
                    '1514a65343cd146100a574de4278f1a3')
    P2PKH_VERBYTE = bytes.fromhex("32")
    P2SH_VERBYTES = [bytes.fromhex("49")]
    WIF_BYTE = bytes.fromhex("4D")
    TX_COUNT_HEIGHT = 140000
    TX_COUNT = 140000
    TX_PER_BLOCK = 4
    RPC_PORT = 24156
    PEERS = [
        'electrum1-gbx.polispay.org',
        'electrum2-gbx.polispay.org'
    ]
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import x11_hash
        return x11_hash.getPoWHash(header)


class Minexcoin(EquihashMixin, Coin):
    NAME = "Minexcoin"
    SHORTNAME = "MNX"
    NET = "mainnet"
    P2PKH_VERBYTE = bytes.fromhex("4b")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('490a36d9451a55ed197e34aca7414b35'
                    'd775baa4a8e896f1c577f65ce2d214cb')
    STATIC_BLOCK_HEADERS = True
    BASIC_HEADER_SIZE = 209
    HEADER_SIZE_NO_SOLUTION = 140
    TX_COUNT = 327963
    TX_COUNT_HEIGHT = 74495
    TX_PER_BLOCK = 5
    RPC_PORT = 8022
    CHUNK_SIZE = 960
    PEERS = [
        'elex01-ams.turinex.eu s t',
        'eu.minexpool.nl s t'
    ]

    @classmethod
    def electrum_header(cls, header, height):
        h = super().electrum_header(header, height)
        h['solution'] = hash_to_hex_str(header[cls.HEADER_SIZE_NO_SOLUTION:])
        return h

    @classmethod
    def block_header(cls, block, height):
        '''Return the block header bytes'''
        deserializer = cls.DESERIALIZER(block)
        return deserializer.read_header(height, cls.HEADER_SIZE_NO_SOLUTION)


class Groestlcoin(Coin):
    NAME = "Groestlcoin"
    SHORTNAME = "GRS"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("24")
    P2SH_VERBYTES = [bytes.fromhex("05")]
    WIF_BYTE = bytes.fromhex("80")
    GENESIS_HASH = ('00000ac5927c594d49cc0bdb81759d0d'
                    'a8297eb614683d3acb62f0703b639023')
    DESERIALIZER = lib_tx.DeserializerGroestlcoin
    TX_COUNT = 115900
    TX_COUNT_HEIGHT = 1601528
    TX_PER_BLOCK = 5
    RPC_PORT = 1441
    PEERS = [
        'electrum1.groestlcoin.org s t',
        'electrum2.groestlcoin.org s t',
        '6brsrbiinpc32tfc.onion t',
        'xkj42efxrcy6vbfw.onion t',
    ]

    def grshash(data):
        import groestlcoin_hash
        return groestlcoin_hash.getHash(data, len(data))

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        return cls.grshash(header)

    ENCODE_CHECK = partial(Base58.encode_check, hash_fn=grshash)
    DECODE_CHECK = partial(Base58.decode_check, hash_fn=grshash)


class GroestlcoinTestnet(Groestlcoin):
    SHORTNAME = "TGRS"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587cf")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("6f")
    P2SH_VERBYTES = [bytes.fromhex("c4")]
    WIF_BYTE = bytes.fromhex("ef")
    GENESIS_HASH = ('000000ffbb50fc9898cdd36ec163e6ba'
                    '23230164c0052a28876255b7dcf2cd36')
    RPC_PORT = 17766
    PEERS = [
        'electrum-test1.groestlcoin.org s t',
        'electrum-test2.groestlcoin.org s t',
        '7frvhgofuf522b5i.onion t',
        'aocojvqcybdoxekv.onion t',
    ]


class Pivx(Coin):
    NAME = "Pivx"
    SHORTNAME = "PIVX"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("022D2533")
    XPRV_VERBYTES = bytes.fromhex("0221312B")
    P2PKH_VERBYTE = bytes.fromhex("1e")
    P2SH_VERBYTES = [bytes.fromhex("0d")]
    WIF_BYTE = bytes.fromhex("d4")
    GENESIS_HASH = ('0000041e482b9b9691d98eefb4847340'
                    '5c0b8ec31b76df3797c74a78680ef818')
    BASIC_HEADER_SIZE = 80
    HDR_V4_SIZE = 112
    HDR_V4_HEIGHT = 863787
    HDR_V4_START_OFFSET = HDR_V4_HEIGHT * BASIC_HEADER_SIZE
    TX_COUNT = 2930206
    TX_COUNT_HEIGHT = 1299212
    TX_PER_BLOCK = 2
    RPC_PORT = 51473

    @classmethod
    def static_header_offset(cls, height):
        assert cls.STATIC_BLOCK_HEADERS
        if height >= cls.HDR_V4_HEIGHT:
            relative_v4_offset = (height - cls.HDR_V4_HEIGHT) * cls.HDR_V4_SIZE
            return cls.HDR_V4_START_OFFSET + relative_v4_offset
        else:
            return height * cls.BASIC_HEADER_SIZE

    @classmethod
    def header_hash(cls, header):
        version, = util.unpack_le_uint32_from(header)
        if version >= 4:
            return super().header_hash(header)
        else:
            import quark_hash
            return quark_hash.getPoWHash(header)


class PivxTestnet(Pivx):
    SHORTNAME = "tPIVX"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("3a8061a0")
    XPRV_VERBYTES = bytes.fromhex("3a805837")
    P2PKH_VERBYTE = bytes.fromhex("8B")
    P2SH_VERBYTES = [bytes.fromhex("13")]
    WIF_BYTE = bytes.fromhex("EF")
    GENESIS_HASH = (
        '0000041e482b9b9691d98eefb48473405c0b8ec31b76df3797c74a78680ef818')
    BASIC_HEADER_SIZE = 80
    HDR_V4_SIZE = 112
    HDR_V4_HEIGHT = 863787
    HDR_V4_START_OFFSET = HDR_V4_HEIGHT * BASIC_HEADER_SIZE
    TX_COUNT = 2157510
    TX_COUNT_HEIGHT = 569399
    TX_PER_BLOCK = 2
    RPC_PORT = 51472


class Bitg(Coin):

    NAME = "BitcoinGreen"
    SHORTNAME = "BITG"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    P2PKH_VERBYTE = bytes.fromhex("26")
    P2SH_VERBYTES = [bytes.fromhex("06")]
    WIF_BYTE = bytes.fromhex("2e")
    GENESIS_HASH = (
        '000008467c3a9c587533dea06ad9380cded3ed32f9742a6c0c1aebc21bf2bc9b')
    DAEMON = daemon.DashDaemon
    TX_COUNT = 1000
    TX_COUNT_HEIGHT = 10000
    TX_PER_BLOCK = 1
    RPC_PORT = 9332
    REORG_LIMIT = 1000
    SESSIONCLS = DashElectrumX
    DAEMON = daemon.DashDaemon

    @classmethod
    def header_hash(cls, header):
        '''Given a header return the hash.'''
        import quark_hash
        return quark_hash.getPoWHash(header)


class tBitg(Bitg):
    SHORTNAME = "tBITG"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587cf")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    P2PKH_VERBYTE = bytes.fromhex("62")
    P2SH_VERBYTES = [bytes.fromhex("0c")]
    WIF_BYTE = bytes.fromhex("6c")
    GENESIS_HASH = (
        '000008467c3a9c587533dea06ad9380cded3ed32f9742a6c0c1aebc21bf2bc9b')
    RPC_PORT = 19332


class CivX(Coin):
    NAME = "CivX"
    SHORTNAME = "CIVX"
    NET = "mainnet"
    XPUB_VERBYTES = bytes.fromhex("0488b21e")
    XPRV_VERBYTES = bytes.fromhex("0488ade4")
    GENESIS_HASH = ('00000036090a68c523471da7a4f0f958'
                    'c1b4403fef74a003be7f71877699cab7')
    P2PKH_VERBYTE = bytes.fromhex("1C")
    P2SH_VERBYTE = [bytes.fromhex("57")]
    WIF_BYTE = bytes.fromhex("9C")
    RPC_PORT = 4561
    TX_COUNT = 1000
    TX_COUNT_HEIGHT = 10000
    TX_PER_BLOCK = 4
    DAEMON = daemon.PreLegacyRPCDaemon
    DESERIALIZER = lib_tx.DeserializerTxTime

    @classmethod
    def header_hash(cls, header):
        version, = util.unpack_le_uint32_from(header)

        if version > 2:
            return double_sha256(header)
        else:
            return hex_str_to_hash(CivX.GENESIS_HASH)


class CivXTestnet(CivX):
    SHORTNAME = "tCIVX"
    NET = "testnet"
    XPUB_VERBYTES = bytes.fromhex("043587cf")
    XPRV_VERBYTES = bytes.fromhex("04358394")
    GENESIS_HASH = ('0000059bb2c2048493efcb0f1a034972'
                    'b3ce4089d54c93b69aaab212fb369887')
    P2PKH_VERBYTE = bytes.fromhex("4B")
    P2SH_VERBYTE = [bytes.fromhex("CE")]
    WIF_BYTE = bytes.fromhex("CB")
    RPC_PORT = 14561

    @classmethod
    def header_hash(cls, header):
        version, = util.unpack_le_uint32_from(header)

        if version > 2:
            return double_sha256(header)
        else:
            return hex_str_to_hash(CivXTestnet.GENESIS_HASH)