mmgen-wallet/mmgen/altcoin.py

#!/usr/bin/env python3
#
# mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
# Copyright (C)2013-2019 The MMGen Project <mmgen@tuta.io>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

"""
altcoin.py - Coin constants for Bitcoin-derived altcoins
"""

# Sources:
#   lb: https://github.com/libbitcoin/libbitcoin/wiki/Altcoin-Version-Mappings
#   pc: https://github.com/richardkiss/pycoin/blob/master/pycoin/networks/legacy_networks.py
#   vg: https://github.com/exploitagency/vanitygen-plus/blob/master/keyconv.c
#   wn: https://walletgenerator.net
#   cc: https://www.cryptocompare.com/api/data/coinlist/ (names,symbols only)

# WIP:
#   NSR:  149/191 c/u,  63/('S'),  64/('S'|'T')
#   NBT:  150/191 c/u,  25/('B'),  26/('B')

import sys
def msg(s): sys.stderr.write(s+'\n')

from collections import namedtuple
ce = namedtuple('CoinInfoEntry',
	['name','symbol','wif_ver_num','p2pkh_info','p2sh_info','has_segwit','trust_level'])

class CoinInfo(object):
	coin_constants = {}
	coin_constants['mainnet'] = (
#   Trust levels: 0=untested 1=low 2=med 3=high -1=disable
#   Fork coins must be disabled here to prevent generation from incorrect sub-seed
	ce('Bitcoin',               'BTC',     0x80,   (0x00,'1'),       (0x05,'3'),       True, -1),
	ce('BitcoinSegwit2X',       'B2X',     0x80,   (0x00,'1'),       (0x05,'3'),       True, -1),
	ce('BitcoinGold',           'BCG',     0x80,   (0x00,'1'),       (0x05,'3'),       True, -1),
	ce('Bcash',                 'BCH',     0x80,   (0x00,'1'),       (0x05,'3'),       False,-1),
	ce('2GiveCoin',             '2GIVE',   0xa7,   (0x27,('G','H')), None,             False, 0),
	ce('42Coin',                '42',      0x88,   (0x08,'4'),       None,             False, 1),
	ce('ACoin',                 'ACOIN',   0xe6,   (0x17,'A'),       None,             False, 0),
	ce('Alphacoin',             'ALF',     0xd2,   (0x52,('Z','a')), None,             False, 0),
	ce('Anoncoin',              'ANC',     0x97,   (0x17,'A'),       None,             False, 1),
	ce('Apexcoin',              'APEX',    0x97,   (0x17,'A'),       None,             False, 0),
	ce('Aquariuscoin',          'ARCO',    0x97,   (0x17,'A'),       None,             False, 0),
	ce('Argentum',              'ARG',     0x97,   (0x17,'A'),       (0x05,'3'),       False, 1),
	ce('AsiaCoin',              'AC',      0x97,   (0x17,'A'),       (0x08,'4'),       False, 1),
	ce('Auroracoin',            'AUR',     0x97,   (0x17,'A'),       None,             False, 1),
	ce('BBQcoin',               'BQC',     0xd5,   (0x55,'b'),       None,             False, 1),
	ce('BitcoinDark',           'BTCD',    0xbc,   (0x3c,'R'),       (0x55,'b'),       False, 1),
	ce('BitcoinFast',           'BCF',     0xe0,   (0x60,('f','g')), None,             False, 0),
	ce('BitQuark',              'BTQ',     0xba,   (0x3a,'Q'),       None,             False, 0),
	ce('Blackcoin',             'BLK',     0x99,   (0x19,'B'),       (0x55,'b'),       False, 1),
	ce('BlackmoonCrypto',       'BMC',     0x83,   (0x03,'2'),       None,             False, 0),
	ce('BlockCat',              'CAT',     0x95,   (0x15,'9'),       None,             False, 0),
	ce('CanadaECoin',           'CDN',     0x9c,   (0x1c,'C'),       (0x05,'3'),       False, 1),
	ce('CannabisCoin',          'CANN',    0x9c,   (0x1c,'C'),       None,             False, 0),
	ce('CannaCoin',             'CCN',     0x9c,   (0x1c,'C'),       (0x05,'3'),       False, 1),
	ce('Capricoin',             'CPC',     0x9c,   (0x1c,'C'),       None,             False, 0),
	ce('CashCoin',              'CASH',    0xa2,   (0x22,('E','F')), None,             False, 0),
	ce('CashOut',               'CSH',     0xa2,   (0x22,('E','F')), None,             False, 0),
	ce('ChainCoin',             'CHC',     0x9c,   (0x1c,'C'),       None,             False, 0),
	ce('Clams',                 'CLAM',    0x85,   (0x89,'x'),       (0x0d,'6'),       False, 1),
	ce('CoinMagi',              'XMG',     0x94,   (0x14,'9'),       None,             False, 0),
	ce('Condensate',            'RAIN',    0xbc,   (0x3c,'R'),       None,             False, 0),
	ce('CryptoBullion',         'CBX',     0x8b,   (0x0b,'5'),       None,             False, 0),
	ce('Cryptonite',            'XCN',     0x80,   (0x1c,'C'),       None,             False, 0),
	ce('CryptoPennies',         'CRPS',    0xc2,   (0x42,'T'),       None,             False, 0),
	ce('Dash',                  'DASH',    0xcc,   (0x4c,'X'),       (0x10,'7'),       False, 1),
	ce('Decred',                'DCR',     0x22de, (0x073f,'D'),     (0x071a,'D'),     False, 1),
	ce('DeepOnion',             'ONION',   0x9f,   (0x1f,'D'),       None,             False, 1),
	ce('Defcoin',               'DFC',     0x9e,   (0x1e,'D'),       (0x05,'3'),       False, 1),
	ce('Devcoin',               'DVC',     0x80,   (0x00,'1'),       None,             False, 1),
	ce('DigiByte',              'DGB',     0x80,   (0x1e,'D'),       (0x05,'3'),       False, 1),
	ce('DigiCoin',              'DGC',     0x9e,   (0x1e,'D'),       (0x05,'3'),       False, 1),
	ce('DogecoinDark',          'DOGED',   0x9e,   (0x1e,'D'),       (0x21,'E'),       False, 1),
	ce('Dogecoin',              'DOGE',    0x9e,   (0x1e,'D'),       (0x16,('9','A')), False, 2),
	ce('DopeCoin',              'DOPE',    0x88,   (0x08,'4'),       (0x05,'3'),       False, 1),
	ce('EGulden',               'EFL',     0xb0,   (0x30,'L'),       (0x05,'3'),       False, 1),
	ce('Emerald',               'EMD',     0xa2,   (0x22,('E','F')), None,             False, 0),
	ce('Emercoin',              'EMC',     0x80,   (0x21,'E'),       (0x5c,'e'),       False, 2),
	ce('EnergyCoin',            'ENRG',    0xdc,   (0x5c,'e'),       None,             False, 0),
	ce('Espers',                'ESP',     0xa1,   (0x21,'E'),       None,             False, 0),
	ce('Faircoin',              'FAI',     0xdf,   (0x5f,'f'),       (0x24,'F'),       False, 1),
	ce('Fastcoin',              'FST',     0xe0,   (0x60,('f','g')), None,             False, 0),
	ce('Feathercoin',           'FTC',     0x8e,   (0x0e,('6','7')), (0x05,'3'),       False, 2),
	ce('Fibre',                 'FIBRE',   0xa3,   (0x23,'F'),       None,             False, 0),
	ce('FlorinCoin',            'FLO',     0xb0,   (0x23,'F'),       None,             False, 0),
	ce('Fluttercoin',           'FLT',     0xa3,   (0x23,'F'),       None,             False, 0),
	ce('Fuel2Coin',             'FC2',     0x80,   (0x24,'F'),       None,             False, 0),
	ce('Fujicoin',              'FJC',     0xa4,   (0x24,'F'),       None,             False, 0),
	ce('Fujinto',               'NTO',     0xa4,   (0x24,'F'),       None,             False, 0),
	ce('GlobalBoost',           'BSTY',    0xa6,   (0x26,'G'),       None,             False, 0),
	ce('GlobalCurrencyReserve', 'GCR',     0x9a,   (0x26,'G'),       (0x61,'g'),       False, 1),
	ce('GoldenBird',            'XGB',     0xaf,   (0x2f,('K','L')), None,             False, 0),
	ce('Goodcoin',              'GOOD',    0xa6,   (0x26,'G'),       None,             False, 0),
	ce('GridcoinResearch',      'GRC',     0xbe,   (0x3e,('R','S')), None,             False, 1),
	ce('Gulden',                'NLG',     0xa6,   (0x26,'G'),       None,             False, 1),
	ce('Guncoin',               'GUN',     0xa7,   (0x27,('G','H')), None,             False, 1),
	ce('HamRadioCoin',          'HAM',     0x80,   (0x00,'1'),       None,             False, 1),
	ce('HTML5Coin',             'HTML5',   0xa8,   (0x28,'H'),       None,             False, 0),
	ce('HyperStake',            'HYP',     0xf5,   (0x75,'p'),       None,             False, 0),
	ce('iCash',                 'ICASH',   0xcc,   (0x66,'i'),       None,             False, 0),
	ce('ImperiumCoin',          'IPC',     0xb0,   (0x30,'L'),       None,             False, 0),
	ce('IncaKoin',              'NKA',     0xb5,   (0x35,'N'),       None,             False, 0),
	ce('Influxcoin',            'INFX',    0xe6,   (0x66,'i'),       None,             False, 0),
	ce('InPay',                 'INPAY',   0xb7,   (0x37,'P'),       None,             False, 0),
#	ce('iXcoin',                'IXC',     0x80,   (0x8a,'x'),       None,             False, 1),
	ce('Judgecoin',             'JUDGE',   0xab,   (0x2b,'J'),       None,             False, 0),
	ce('Jumbucks',              'JBS',     0xab,   (0x2b,'J'),       (0x69,'j'),       False, 2),
	ce('Lanacoin',              'LANA',    0xb0,   (0x30,'L'),       None,             False, 0),
	ce('Latium',                'LAT',     0x80,   (0x17,'A'),       None,             False, 0),
	ce('Litecoin',              'LTC',     0xb0,   (0x30,'L'),       (0x05,'3'),       True,  3),
	ce('LiteDoge',              'LDOGE',   0xab,   (0x5a,'d'),       None,             False, 0),
	ce('LomoCoin',              'LMC',     0xb0,   (0x30,'L'),       None,             False, 0),
	ce('Marscoin',              'MARS',    0xb2,   (0x32,'M'),       None,             False, 0),
	ce('MarsCoin',              'MRS',     0xb2,   (0x32,'M'),       None,             False, 0),
	ce('MartexCoin',            'MXT',     0xb2,   (0x32,'M'),       None,             False, 0),
	ce('MasterCar',             'MCAR',    0xe6,   (0x17,'A'),       None,             False, 0),
	ce('MazaCoin',              'MZC',     0xe0,   (0x32,'M'),       (0x09,('4','5')), False, 2),
	ce('MegaCoin',              'MEC',     0xb2,   (0x32,'M'),       None,             False, 1),
	ce('MintCoin',              'MINT',    0xb3,   (0x33,'M'),       None,             False, 0),
	ce('Mobius',                'MOBI',    0x80,   (0x00,'1'),       None,             False, 0),
	ce('MonaCoin',              'MONA',    0xb0,   (0x32,'M'),       (0x05,'3'),       False, 1),
	ce('MonetaryUnit',          'MUE',     0x8f,   (0x0f,'7'),       (0x09,('4','5')), False, 1),
	ce('MoonCoin',              'MOON',    0x83,   (0x03,'2'),       None,             False, 0),
	ce('MyriadCoin',            'MYR',     0xb2,   (0x32,'M'),       (0x09,('4','5')), False, 1),
	ce('Myriadcoin',            'MYRIAD',  0xb2,   (0x32,'M'),       None,             False, 1),
	ce('Namecoin',              'NMC',     0xb4,   (0x34,('M','N')), (0x0d,'6'),       False, 1),
	ce('Neoscoin',              'NEOS',    0xef,   (0x3f,'S'),       (0xbc,'2'),       False, 1),
	ce('NevaCoin',              'NEVA',    0xb1,   (0x35,'N'),       None,             False, 0),
	ce('Novacoin',              'NVC',     0x88,   (0x08,'4'),       (0x14,'9'),       False, 1),
	ce('OKCash',                'OK',      0xb7,   (0x37,'P'),       (0x1c,'C'),       False, 1),
	ce('Omnicoin',              'OMC',     0xf3,   (0x73,'o'),       None,             False, 1),
	ce('Omni',                  'OMNI',    0xf3,   (0x73,'o'),       None,             False, 0),
	ce('Onix',                  'ONX',     0x80,   (0x8a,'x'),       None,             False, 0),
	ce('PandaCoin',             'PND',     0xb7,   (0x37,'P'),       (0x16,('9','A')), False, 1),
	ce('ParkByte',              'PKB',     0xb7,   (0x37,'P'),       (0x1c,'C'),       False, 1),
	ce('Particl',               'PART',    0x6c,   (0x38,'P'),       None,             False, 0),
	ce('Paycoin',               'CON',     0xb7,   (0x37,'P'),       None,             False, 1),
	ce('Peercoin',              'PPC',     0xb7,   (0x37,'P'),       (0x75,'p'),       False, 1),
	ce('PesetaCoin',            'PTC',     0xaf,   (0x2f,('K','L')), None,             False, 1),
	ce('PhoenixCoin',           'PXC',     0xb8,   (0x38,'P'),       None,             False, 0),
	ce('PinkCoin',              'PINK',    0x83,   (0x03,'2'),       None,             False, 1),
	ce('PIVX',                  'PIVX',    0xd4,   (0x1e,'D'),       None,             False, 0),
	ce('PokeChain',             'XPOKE',   0x9c,   (0x1c,'C'),       None,             False, 0),
	ce('Potcoin',               'POT',     0xb7,   (0x37,'P'),       (0x05,'3'),       False, 1),
	ce('Primecoin',             'XPM',     0x97,   (0x17,'A'),       (0x53,'a'),       False, 1),
	ce('Quark',                 'QRK',     0xba,   (0x3a,'Q'),       None,             False, 0),
	ce('ReddCoin',              'RDD',     0xbd,   (0x3d,'R'),       None,             False, 1),
	ce('Riecoin',               'RIC',     0x80,   (0x3c,'R'),       (0x05,'3'),       False, 2),
	ce('Rimbit',                'RBT',     0xbc,   (0x3c,'R'),       None,             False, 0),
	ce('Rubycoin',              'RBY',     0xbd,   (0x3d,'R'),       (0x55,'b'),       False, 1),
	ce('ShadowCash',            'SDC',     0xbf,   (0x3f,'S'),       (0x7d,'s'),       False, 1),
	ce('Sibcoin',               'SIB',     0x80,   (0x3f,'S'),       None,             False, 0),
	ce('SixEleven',             '611',     0x80,   (0x34,('M','N')), None,             False, 0),
	ce('SmileyCoin',            'SMLY',    0x99,   (0x19,'B'),       None,             False, 0),
	ce('Songcoin',              'SONG',    0xbf,   (0x3f,'S'),       None,             False, 0),
	ce('Spreadcoin',            'SPR',     0xbf,   (0x3f,'S'),       None,             False, 1),
	ce('Startcoin',             'START',   0xfd,   (0x7d,'s'),       (0x05,'3'),       False, 1),
	ce('StealthCoin',           'XST',     0xbe,   (0x3e,('R','S')), None,             False, 0),
	ce('SwagBucks',             'BUCKS',   0x99,   (0x3f,'S'),       None,             False, 0),
	ce('SysCoin',               'SYS',     0x80,   (0x00,'1'),       None,             False, 0),
	ce('TajCoin',               'TAJ',     0x6f,   (0x41,'T'),       None,             False, 0),
	ce('Templecoin',            'TPC',     0xc1,   (0x41,'T'),       (0x05,'3'),       False, 1),
	ce('Terracoin',             'TRC',     0x80,   (0x00,'1'),       None,             False, 0),
	ce('Titcoin',               'TIT',     0x80,   (0x00,'1'),       None,             False, 0),
	ce('TittieCoin',            'TTC',     0xc1,   (0x41,'T'),       None,             False, 0),
	ce('Transfer',              'TX',      0x99,   (0x42,'T'),       None,             False, 0),
	ce('Unobtanium',            'UNO',     0xe0,   (0x82,'u'),       (0x1e,'D'),       False, 2),
	ce('Vcash',                 'XVC',     0xc7,   (0x47,'V'),       None,             False, 0),
	ce('Vertcoin',              'VTC',     0xc7,   (0x47,'V'),       (0x05,'3'),       False, 1),
	ce('Viacoin',               'VIA',     0xc7,   (0x47,'V'),       (0x21,'E'),       False, 2),
	ce('VpnCoin',               'VPN',     0xc7,   (0x47,'V'),       (0x05,'3'),       False, 1),
	ce('WankCoin',              'WKC',     0x80,   (0x00,'1'),       None,             False, 1),
	ce('WashingtonCoin',        'WASH',    0xc9,   (0x49,'W'),       None,             False, 0),
	ce('WeAreSatoshi',          'WSX',     0x97,   (0x87,'w'),       None,             False, 0),
	ce('WisdomCoin',            'WISC',    0x87,   (0x49,'W'),       None,             False, 0),
	ce('WorldCoin',             'WDC',     0xc9,   (0x49,'W'),       None,             False, 1),
	ce('XRealEstateDevcoin',    'XRED',    0x80,   (0x00,'1'),       None,             False, 0),
	ce('ZetaCoin',              'ZET',     0xe0,   (0x50,'Z'),       None,             False, 0),
	ce('ZiftrCoin',             'ZRC',     0xd0,   (0x50,'Z'),       (0x05,'3'),       False, 1),
	ce('ZLiteQubit',            'ZLQ',     0xe0,   (0x26,'G'),       None,             False, 0),
	ce('Zoomcoin',              'ZOOM',    0xe7,   (0x67,'i'),       (0x5c,'e'),       False, 1),
	)

	coin_constants['testnet'] = (
	ce('Dash',        'DASH',  0xef,   (0x8c,'y'),       (0x13,('8','9')), False, 1),
	ce('Decred',      'DCR',   0x230e, (0x0f21,'T'),     (0x0e6c,'S'),     False, 1),
	ce('Dogecoin',    'DOGE',  0xf1,   (0x71,'n'),       (0xc4,'2'),       False, 2),
	ce('Feathercoin', 'FTC',   0xc1,   (0x41,'T'),       (0xc4,'2'),       False, 2),
	ce('Viacoin',     'VIA',   0xff,   (0x7f,'t'),       (0xc4,'2'),       False, 2),
	ce('Emercoin',    'EMC',   0xef,   (0x6f,('m','n')), (0xc4,'2'),       False, 2),
	)

	coin_sources = (
	('BTC',    'https://github.com/bitcoin/bitcoin/blob/master/src/chainparams.cpp'),
	('EMC',    'https://github.com/emercoin/emercoin/blob/master/src/chainparams.cpp'), # checked mn,tn
	('LTC',    'https://github.com/litecoin-project/litecoin/blob/master-0.10/src/chainparams.cpp'),
	('DOGE',   'https://github.com/dogecoin/dogecoin/blob/master/src/chainparams.cpp'),
	('RDD',    'https://github.com/reddcoin-project/reddcoin/blob/master/src/base58.h'),
	('DASH',   'https://github.com/dashpay/dash/blob/master/src/chainparams.cpp'),
	('PPC',    'https://github.com/belovachap/peercoin/blob/master/src/base58.h'),
	('NMC',    'https://github.com/domob1812/namecore/blob/master/src/chainparams.cpp'),
	('FTC',    'https://github.com/FeatherCoin/Feathercoin/blob/master-0.8/src/base58.h'),
	('BLK',    'https://github.com/rat4/blackcoin/blob/master/src/chainparams.cpp'),
	('NSR',    'https://nubits.com/nushares/introduction'),
	('NBT',    'https://bitbucket.org/JordanLeePeershares/nubit/NuBit / src /base58.h'),
	('MZC',    'https://github.com/MazaCoin/MazaCoin/blob/master/src/chainparams.cpp'),
	('VIA',    'https://github.com/viacoin/viacoin/blob/master/src/chainparams.cpp'),
	('RBY',    'https://github.com/rubycoinorg/rubycoin/blob/master/src/base58.h'),
	('GRS',    'https://github.com/GroestlCoin/groestlcoin/blob/master/src/groestlcoin.cpp'),
	('DGC',    'https://github.com/DGCDev/digitalcoin/blob/master/src/chainparams.cpp'),
	('CCN',    'https://github.com/Cannacoin-Project/Cannacoin/blob/Proof-of-Stake/src/base58.h'),
	('DGB',    'https://github.com/digibyte/digibyte/blob/master/src/chainparams.cpp'),
	('MONA',   'https://github.com/monacoinproject/monacoin/blob/master-0.10/src/chainparams.cpp'),
	('CLAM',   'https://github.com/nochowderforyou/clams/blob/master/src/chainparams.cpp'),
	('XPM',    'https://github.com/primecoin/primecoin/blob/master/src/base58.h'),
	('NEOS',   'https://github.com/bellacoin/neoscoin/blob/master/src/chainparams.cpp'),
	('JBS',    'https://github.com/jyap808/jumbucks/blob/master/src/base58.h'),
	('ZRC',    'https://github.com/ZiftrCOIN/ziftrcoin/blob/master/src/chainparams.cpp'),
	('VTC',    'https://github.com/vertcoin/vertcoin/blob/master/src/base58.h'),
	('NXT',    'https://bitbucket.org/JeanLucPicard/nxt/src and unofficial at https://github.com/Blackcomb/nxt'),
	('MUE',    'https://github.com/MonetaryUnit/MUE-Src/blob/master/src/chainparams.cpp'),
	('ZOOM',   'https://github.com/zoom-c/zoom/blob/master/src/base58.h'),
	('VPN',    'https://github.com/Bit-Net/VpnCoin/blob/master/src/base58.h'),
	('CDN',    'https://github.com/ThisIsOurCoin/canadaecoin/blob/master/src/base58.h'),
	('SDC',    'https://github.com/ShadowProject/shadow/blob/master/src/chainparams.cpp'),
	('PKB',    'https://github.com/parkbyte/ParkByte/blob/master/src/base58.h'),
	('PND',    'https://github.com/coinkeeper/2015-04-19_21-22_pandacoin/blob/master/src/base58.h'),
	('START',  'https://github.com/startcoin-project/startcoin/blob/master/src/base58.h'),
	('GCR',    'https://github.com/globalcurrencyreserve/gcr/blob/master/src/chainparams.cpp'),
	('NVC',    'https://github.com/novacoin-project/novacoin/blob/master/src/base58.h'),
	('AC',     'https://github.com/AsiaCoin/AsiaCoinFix/blob/master/src/base58.h'),
	('BTCD',   'https://github.com/jl777/btcd/blob/master/src/base58.h'),
	('DOPE',   'https://github.com/dopecoin-dev/DopeCoinV3/blob/master/src/base58.h'),
	('TPC',    'https://github.com/9cat/templecoin/blob/templecoin/src/base58.h'),
	('OK',     'https://github.com/okcashpro/okcash/blob/master/src/chainparams.cpp'),
	('DOGED',  'https://github.com/doged/dogedsource/blob/master/src/base58.h'),
	('EFL',    'https://github.com/Electronic-Gulden-Foundation/egulden/blob/master/src/base58.h'),
	('POT',    'https://github.com/potcoin/Potcoin/blob/master/src/base58.h'),
	)

	# Sources (see above) that are in agreement for these coins
	# No check for segwit, p2sh check skipped if source doesn't support it
	cross_checks = {
		'2GIVE':  ['wn'],
		'42':     ['vg','wn'],
		'611':    ['wn'],
		'AC':     ['lb','vg'],
		'ACOIN':  ['wn'],
		'ALF':    ['wn'],
		'ANC':    ['vg','wn'],
		'APEX':   ['wn'],
		'ARCO':   ['wn'],
		'ARG':    ['pc'],
		'AUR':    ['vg','wn'],
		'BCH':    ['wn'],
		'BLK':    ['lb','vg','wn'],
		'BQC':    ['vg','wn'],
		'BSTY':   ['wn'],
		'BTC':    ['lb','vg','wn'],
		'BTCD':   ['lb','vg','wn'],
		'BUCKS':  ['wn'],
		'CASH':   ['wn'],
		'CBX':    ['wn'],
		'CCN':    ['lb','vg','wn'],
		'CDN':    ['lb','vg','wn'],
		'CHC':    ['wn'],
		'CLAM':   ['lb','vg'],
		'CON':    ['vg','wn'],
		'CPC':    ['wn'],
		'DASH':   ['lb','pc','vg','wn'],
		'DCR':    ['pc'],
		'DFC':    ['pc'],
		'DGB':    ['lb','vg'],
		'DGC':    ['lb','vg','wn'],
		'DOGE':   ['lb','pc','vg','wn'],
		'DOGED':  ['lb','vg','wn'],
		'DOPE':   ['lb','vg'],
		'DVC':    ['vg','wn'],
		'EFL':    ['lb','vg','wn'],
		'EMC':    ['vg'],
		'EMD':    ['wn'],
		'ESP':    ['wn'],
		'FAI':    ['pc'],
		'FC2':    ['wn'],
		'FIBRE':  ['wn'],
		'FJC':    ['wn'],
		'FLO':    ['wn'],
		'FLT':    ['wn'],
		'FST':    ['wn'],
		'FTC':    ['lb','pc','vg','wn'],
		'GCR':    ['lb','vg'],
		'GOOD':   ['wn'],
		'GRC':    ['vg','wn'],
		'GUN':    ['vg','wn'],
		'HAM':    ['vg','wn'],
		'HTML5':  ['wn'],
		'HYP':    ['wn'],
		'ICASH':  ['wn'],
		'INFX':   ['wn'],
		'IPC':    ['wn'],
		'JBS':    ['lb','pc','vg','wn'],
		'JUDGE':  ['wn'],
		'LANA':   ['wn'],
		'LAT':    ['wn'],
		'LDOGE':  ['wn'],
		'LMC':    ['wn'],
		'LTC':    ['lb','vg','wn'],
		'MARS':   ['wn'],
		'MEC':    ['pc','wn'],
		'MINT':   ['wn'],
		'MOBI':   ['wn'],
		'MONA':   ['lb','vg'],
		'MOON':   ['wn'],
		'MUE':    ['lb','vg'],
		'MXT':    ['wn'],
		'MYR':    ['pc'],
		'MYRIAD': ['vg','wn'],
		'MZC':    ['lb','pc','vg','wn'],
		'NEOS':   ['lb','vg'],
		'NEVA':   ['wn'],
		'NKA':    ['wn'],
		'NLG':    ['vg','wn'],
		'NMC':    ['lb','vg'],
		'NVC':    ['lb','vg','wn'],
		'OK':     ['lb','vg'],
		'OMC':    ['vg','wn'],
		'ONION':  ['vg','wn'],
		'PART':   ['wn'],
		'PINK':   ['vg','wn'],
		'PIVX':   ['wn'],
		'PKB':    ['lb','vg','wn'],
		'PND':    ['lb','vg','wn'],
		'POT':    ['lb','vg','wn'],
		'PPC':    ['lb','vg','wn'],
		'PTC':    ['vg','wn'],
		'PXC':    ['wn'],
		'QRK':    ['wn'],
		'RAIN':   ['wn'],
		'RBT':    ['wn'],
		'RBY':    ['lb','vg'],
		'RDD':    ['vg','wn'],
		'RIC':    ['pc','vg','wn'],
		'SDC':    ['lb','vg'],
		'SIB':    ['wn'],
		'SMLY':   ['wn'],
		'SONG':   ['wn'],
		'SPR':    ['vg','wn'],
		'START':  ['lb','vg'],
		'SYS':    ['wn'],
		'TAJ':    ['wn'],
		'TIT':    ['wn'],
		'TPC':    ['lb','vg'],
		'TRC':    ['wn'],
		'TTC':    ['wn'],
		'TX':     ['wn'],
		'UNO':    ['pc','vg','wn'],
		'VIA':    ['lb','pc','vg','wn'],
		'VPN':    ['lb','vg'],
		'VTC':    ['lb','vg','wn'],
		'WDC':    ['vg','wn'],
		'WISC':   ['wn'],
		'WKC':    ['vg','wn'],
		'WSX':    ['wn'],
		'XCN':    ['wn'],
		'XGB':    ['wn'],
		'XPM':    ['lb','vg','wn'],
		'XST':    ['wn'],
		'XVC':    ['wn'],
		'ZET':    ['wn'],
		'ZOOM':   ['lb','vg'],
		'ZRC':    ['lb','vg']
	}

	# Data is one of the coin_constants lists above.  Normalize ints to hex of correct width, add
	# missing leading letters, set trust level from external_tests.
	# Insert a coin entry from outside source, set version info leading letters to '?' and trust level
	# to 0, then run CoinInfo.fix_table(data).  'has_segwit' field is updated manually for now.
	@classmethod
	def fix_table(cls,data):
		import re

		def myhex(n):
			return '0x{:0{}x}'.format(n,2 if n < 256 else 4)

		def fix_ver_info(e,k):
			e[k] = list(e[k])
			e[k][0] = myhex(e[k][0])
			s1 = cls.find_addr_leading_symbol(int(e[k][0][2:],16))
			m = 'Fixing leading address letter for coin {} ({!r} --> {})'.format(e['symbol'],e[k][1],s1)
			if e[k][1] != '?':
				assert s1 == e[k][1],'First letters do not match! {}'.format(m)
			else:
				msg(m)
				e[k][1] = s1
			e[k] = tuple(e[k])

		old_sym = None
		for sym in sorted([e.symbol for e in data]):
			if sym == old_sym:
				msg("'{}': duplicate coin symbol in data!".format(sym))
				sys.exit(2)
			old_sym = sym

		tt = cls.create_trust_table()

		name_w = max(len(e.name) for e in data)
		fs = '\t({:%s} {:10} {:7} {:17} {:17} {:6} {}),' % (name_w+3)
		for e in data:
			e = e._asdict()
			e['wif_ver_num'] = myhex(e['wif_ver_num'])
			sym,trust = e['symbol'],e['trust_level']

			fix_ver_info(e,'p2pkh_info')
			if type(e['p2sh_info']) == tuple:
				fix_ver_info(e,'p2sh_info')

			for k in e.keys():
				e[k] = repr(e[k])
				e[k] = re.sub(r"'0x(..)'",r'0x\1',e[k])
				e[k] = re.sub(r"'0x(....)'",r'0x\1',e[k])
				e[k] = re.sub(r' ',r'',e[k]) + ('',',')[k != 'trust_level']

			if trust != -1:
				if sym in tt:
					src = tt[sym]
					if src != trust:
						msg("Updating trust for coin '{}': {} -> {}".format(sym,trust,src))
						e['trust_level'] = src
				else:
					if trust != 0:
						msg("Downgrading trust for coin '{}': {} -> {}".format(sym,trust,0))
						e['trust_level'] = 0

				if sym in cls.cross_checks:
					if int(e['trust_level']) == 0 and len(cls.cross_checks[sym]) > 1:
						msg("Upgrading trust for coin '{}': {} -> {}".format(sym,e['trust_level'],1))
						e['trust_level'] = 1

			print(fs.format(*e.values()))
		msg('Processed {} entries'.format(len(data)))

	@classmethod
	def find_addr_leading_symbol(cls,ver_num,verbose=False):

		def phash2addr(ver_num,pk_hash):
			from mmgen.protocol import _b58chk_encode
			return _b58chk_encode('{:0{}x}'.format(ver_num,2 if ver_num < 256 else 4) + pk_hash)

		low = phash2addr(ver_num,'00'*20)
		high = phash2addr(ver_num,'ff'*20)

		if verbose:
			print('low address:  ' + low)
			print('high address: ' + high)

		l1,h1 = low[0],high[0]
		return (l1,h1) if l1 != h1 else l1

	@classmethod
	def print_symbols(cls,include_names=False,reverse=False):
		for e in cls.coin_constants['mainnet']:
			if reverse:
				print('{:6} {}'.format(e.symbol,e.name))
			else:
				name_w = max(len(e.name) for e in cls.coin_constants['mainnet'])
				print(('{:{}} '.format(e.name,name_w) if include_names else '') + e.symbol)

	@classmethod
	def create_trust_table(cls):
		tt = {}
		mn = cls.external_tests['mainnet']
		for ext_prog in mn:
			assert len(set(mn[ext_prog])) == len(mn[ext_prog]),"Duplicate entry in '{}'!".format(ext_prog)
			for coin in mn[ext_prog]:
				if coin in tt:
					tt[coin] += 1
				else:
					tt[coin] = 1
		for k in cls.trust_override:
			tt[k] = cls.trust_override[k]
		return tt

	trust_override = {'BTC':3,'BCH':3,'LTC':3,'DASH':1,'EMC':2}
	external_tests = {
		'mainnet': {
			'moneropy': ('XMR',),
			'pycoin': (
				# broken: DASH - only compressed, LTC segwit old fmt
				'BTC','LTC','VIA','FTC','DOGE','MEC',
				'JBS','MZC','RIC','DFC','FAI','ARG','ZEC','DCR'),
			'ethkey': ('ETH','ETC'),
			'zcash_mini': ('ZEC',),
			'keyconv': ( # all supported by vanitygen-plus 'keyconv' util
				# broken: PIVX
				'42','AC','AIB','ANC','ARS','ATMOS','AUR','BLK','BQC','BTC','TEST','BTCD','CCC','CCN','CDN',
				'CLAM','CNC','CNOTE','CON','CRW','DEEPONION','DGB','DGC','DMD','DOGED','DOGE','DOPE',
				'DVC','EFL','EMC','EXCL','FAIR','FLOZ','FTC','GAME','GAP','GCR','GRC','GRS','GUN','HAM','HODL',
				'IXC','JBS','LBRY','LEAF','LTC','MMC','MONA','MUE','MYRIAD','MZC','NEOS','NLG','NMC','NVC',
				'NYAN','OK','OMC','PIGGY','PINK','PKB','PND','POT','PPC','PTC','PTS','QTUM','RBY','RDD',
				'RIC','SCA','SDC','SKC','SPR','START','SXC','TPC','UIS','UNO','VIA','VPN','VTC','WDC','WKC',
				'WUBS', 'XC', 'XPM', 'YAC', 'ZOOM', 'ZRC')
		},
		'testnet': {
			'pycoin': {
				# broken: DASH - only compressed { 'DASH':'tDASH' }
				'BTC':'XTN','LTC':'XLT','VIA':'TVI','FTC':'FTX','DOGE':'XDT','DCR':'DCRT'
				},
			'ethkey': {},
			'keyconv': {}
		}
	}
	external_tests_segwit_compressed = {
		'segwit': ('BTC'),
		'compressed': (
		'BTC','LTC','VIA','FTC','DOGE','DASH','MEC','MYR','UNO',
		'JBS','MZC','RIC','DFC','FAI','ARG','ZEC','DCR','ZEC'),
	}