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Symlink to tools/build_coins for backward compatibility
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#!/usr/bin/env python3
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# This script generates coins.json files from the definitions in defs/
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#
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# - `./build_coins.py` generates a big file with everything
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# - `./build_coins.py XXX` generates a file with coins supported by XXX
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# for example: `./build_coins.py webwallet` or `./build_coins.py trezor1`
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# - `./build_coins.py XXX --defs` also adds protobuf definitions with TOIF icon
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#
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# generated file is coins.json in current directory,
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# and coindefs.json if --def is enabled
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import json
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import glob
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import re
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import os
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import sys
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if '--defs' in sys.argv:
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from binascii import unhexlify
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from hashlib import sha256
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import ed25519
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from PIL import Image
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from trezorlib.protobuf import dump_message
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from coindef import CoinDef
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BUILD_DEFS = True
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else:
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BUILD_DEFS = False
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def check_type(val, types, nullable=False, empty=False, regex=None, choice=None): # noqa:E501
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# check nullable
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if nullable and val is None:
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return True
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# check empty
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try:
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if not empty and len(val) == 0:
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return False
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except TypeError:
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pass
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# check regex
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if regex is not None:
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if types is not str:
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return False
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m = re.match(regex, val)
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if not m:
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return False
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# check choice
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if choice is not None:
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if val not in choice:
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return False
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# check type
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if isinstance(types, list):
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return True in [isinstance(val, t) for t in types]
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else:
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return isinstance(val, types)
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def validate_coin(coin):
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assert check_type(coin['coin_name'], str, regex=r'^[A-Z]')
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assert check_type(coin['coin_shortcut'], str, regex=r'^[A-Zt][A-Z][A-Z]+$')
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assert check_type(coin['coin_label'], str, regex=r'^[A-Z]')
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assert check_type(coin['website'], str, regex=r'^http.*[^/]$')
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assert check_type(coin['github'], str, regex=r'^https://github.com/.*[^/]$') # noqa:E501
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assert check_type(coin['maintainer'], str)
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assert check_type(coin['curve_name'], str, choice=['secp256k1', 'secp256k1_decred', 'secp256k1_groestl']) # noqa:E501
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assert check_type(coin['address_type'], int)
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assert check_type(coin['address_type_p2sh'], int)
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assert coin['address_type'] != coin['address_type_p2sh']
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assert check_type(coin['maxfee_kb'], int)
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assert check_type(coin['minfee_kb'], int)
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assert coin['maxfee_kb'] >= coin['minfee_kb']
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assert check_type(coin['hash_genesis_block'], str, regex=r'^[0-9a-f]{64}$')
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assert check_type(coin['xprv_magic'], int)
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assert check_type(coin['xpub_magic'], int)
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assert check_type(coin['xpub_magic_segwit_p2sh'], int, nullable=True)
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assert check_type(coin['xpub_magic_segwit_native'], int, nullable=True)
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assert coin['xprv_magic'] != coin['xpub_magic']
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assert coin['xprv_magic'] != coin['xpub_magic_segwit_p2sh']
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assert coin['xprv_magic'] != coin['xpub_magic_segwit_native']
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assert coin['xpub_magic'] != coin['xpub_magic_segwit_p2sh']
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assert coin['xpub_magic'] != coin['xpub_magic_segwit_native']
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assert coin['xpub_magic_segwit_p2sh'] is None or coin['xpub_magic_segwit_native'] is None or coin['xpub_magic_segwit_p2sh'] != coin['xpub_magic_segwit_native'] # noqa:E501
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assert check_type(coin['slip44'], int)
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assert check_type(coin['segwit'], bool)
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assert check_type(coin['decred'], bool)
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assert check_type(coin['fork_id'], int, nullable=True)
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assert check_type(coin['force_bip143'], bool)
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assert check_type(coin['version_group_id'], int, nullable=True)
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assert check_type(coin['default_fee_b'], dict)
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assert check_type(coin['dust_limit'], int)
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assert check_type(coin['blocktime_seconds'], int)
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assert check_type(coin['signed_message_header'], str)
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assert check_type(coin['address_prefix'], str, regex=r'^.*:$')
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assert check_type(coin['min_address_length'], int)
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assert check_type(coin['max_address_length'], int)
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assert coin['max_address_length'] >= coin['min_address_length']
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assert check_type(coin['bech32_prefix'], str, nullable=True)
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assert check_type(coin['cashaddr_prefix'], str, nullable=True)
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assert check_type(coin['bitcore'], list, empty=True)
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for bc in coin['bitcore']:
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assert not bc.endswith('/')
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def validate_icon(icon):
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assert icon.size == (96, 96)
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assert icon.mode == 'RGBA'
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class Writer:
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def __init__(self):
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self.buf = bytearray()
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def write(self, buf):
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self.buf.extend(buf)
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def serialize(coin, icon):
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c = dict(coin)
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c['signed_message_header'] = c['signed_message_header'].encode()
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c['hash_genesis_block'] = unhexlify(c['hash_genesis_block'])
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c['icon'] = icon
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msg = CoinDef(**c)
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w = Writer()
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dump_message(w, msg)
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return bytes(w.buf)
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def sign(data):
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h = sha256(data).digest()
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sign_key = ed25519.SigningKey(b'A' * 32)
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return sign_key.sign(h)
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# conversion copied from trezor-core/tools/png2toi
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# TODO: extract into common module in python-trezor
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def convert_icon(icon):
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import struct
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import zlib
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w, h = 32, 32
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icon = icon.resize((w, h), Image.LANCZOS)
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# remove alpha channel, replace with black
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bg = Image.new('RGBA', icon.size, (0, 0, 0, 255))
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icon = Image.alpha_composite(bg, icon)
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# process pixels
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pix = icon.load()
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data = bytes()
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for j in range(h):
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for i in range(w):
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r, g, b, _ = pix[i, j]
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c = ((r & 0xF8) << 8) | ((g & 0xFC) << 3) | ((b & 0xF8) >> 3)
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data += struct.pack('>H', c)
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z = zlib.compressobj(level=9, wbits=10)
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zdata = z.compress(data) + z.flush()
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zdata = zdata[2:-4] # strip header and checksum
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return zdata
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def process_json(fn):
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print(os.path.basename(fn), end=' ... ')
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j = json.load(open(fn))
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if BUILD_DEFS:
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i = Image.open(fn.replace('.json', '.png'))
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validate_coin(j)
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validate_icon(i)
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ser = serialize(j, convert_icon(i))
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sig = sign(ser)
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definition = (sig + ser).hex()
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print('OK')
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return j, definition
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else:
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print('OK')
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return j, None
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scriptdir = os.path.dirname(os.path.realpath(__file__))
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support_json = json.load(open(scriptdir + '/../../support.json'))
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if len(sys.argv) > 1 and not sys.argv[1].startswith('-'):
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support_list = support_json[sys.argv[1]].keys()
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else:
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support_list = None
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coins = {}
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defs = {}
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for fn in glob.glob(scriptdir + '/../*.json'):
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c, d = process_json(fn)
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n = c['coin_name']
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c['support'] = {}
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for s in support_json.keys():
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c['support'][s] = support_json[s][n] if n in support_json[s] else None
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if support_list is None or n in support_list:
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coins[n] = c
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defs[n] = d
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json.dump(coins, open('coins.json', 'w'), indent=4, sort_keys=True)
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if BUILD_DEFS:
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json.dump(defs, open('coindefs.json', 'w'), indent=4, sort_keys=True)
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# check for colliding address versions
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at_p2pkh = {}
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at_p2sh = {}
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slip44 = {}
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for n, c in coins.items():
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s = c['slip44']
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if s not in slip44:
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slip44[s] = []
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if not(n.endswith('Testnet') and s == 1):
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slip44[s].append(n)
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if c['cashaddr_prefix']: # skip cashaddr currencies
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continue
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a1, a2 = c['address_type'], c['address_type_p2sh']
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if a1 not in at_p2pkh:
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at_p2pkh[a1] = []
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if a2 not in at_p2sh:
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at_p2sh[a2] = []
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at_p2pkh[a1].append(n)
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at_p2sh[a2].append(n)
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print()
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print('Colliding address_types for P2PKH:')
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for k, v in at_p2pkh.items():
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if len(v) >= 2:
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print('-', k, ':', ','.join(v))
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print()
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print('Colliding address_types for P2SH:')
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for k, v in at_p2sh.items():
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if len(v) >= 2:
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print('-', k, ':', ','.join(v))
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print()
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print('Colliding SLIP44 constants:')
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for k, v in slip44.items():
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if len(v) >= 2:
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print('-', k, ':', ','.join(v))
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1
defs/coins/tools/build_coins.py
Symbolic link
1
defs/coins/tools/build_coins.py
Symbolic link
@ -0,0 +1 @@
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../../../tools/build_coins.py
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