class BitcoinRegtest(BitcoinTestnet):
NAME = 'Bitcoin Regtest'
NAME_LOWER = 'regtest bitcoin'
SEGWIT_HRP = "bcrt"
GENESIS = "0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"
DEFAULT_SERVERS = read_json('servers/Bitcoin-Regtest.json', {})
LN_DNS_SEEDS = []
DATA_DIR = 'regtest'
class AbosomMainnet(AbstractNet, StakeMixin):
NAME = 'Abosom'
NAME_LOWER = 'abosom'
SHORT_CODE = 'ABOSOM'
DATA_DIR = 'abosom'
OPEN_ALIAS_PREFIX = 'abosom'
PAYMENT_URI_SCHEME = 'abosom'
PAYMENT_REQUEST_PKI_TYPE = "dnssec+abosom"
APPLICATION_PAYMENT_REQUEST_TYPE = 'application/abosom-paymentrequest'
APPLICATION_PAYMENT_TYPE = 'application/abosom-payment'
APPLICATION_PAYMENT_ACK_TYPE = 'application/abosom-paymentack'
BASE_UNITS = {'ABOSOM': 8, 'mABOSOM': 5, 'uABOSOM': 2, 'satoshi': 0}
BASE_UNITS_INVERSE = inv_dict(BASE_UNITS)
BASE_UNITS_LIST = ['ABOSOM', 'mABOSOM', 'uABOSOM', 'satoshi']
TESTNET = False
WIF_PREFIX = 0x80
ADDRTYPE_P2PKH = 75
ADDRTYPE_P2SH = 78
XPRV_HEADERS = {
'standard': 0x800001c8,
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x800001c8,
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 704
GENESIS = "00000e8048ffa0a80549ed405640e95e01590e70baf4888ef594d87402635697"
DEFAULT_PORTS = {'t': '50041', 's': '50042'}
DEFAULT_SERVERS = read_json('servers/Abosom-Mainnet.json', {})
CHECKPOINTS = read_json('checkpoints/Abosom-Mainnet.json', [])
LN_REALM_BYTE = 0
LN_DNS_SEEDS = []
COINBASE_MATURITY = 8
COIN = 1000000
TOTAL_COIN_SUPPLY_LIMIT = 110000000
SIGNED_MESSAGE_PREFIX = b"\x18Abosom Signed Message:\n"
class BitcoinSimnet(BitcoinTestnet):
NAME = 'Bitcoin Simnet'
NAME_LOWER = 'simnet bitcoin'
WIF_PREFIX = 0x64
ADDRTYPE_P2PKH = 0x3f
ADDRTYPE_P2SH = 0x7b
SEGWIT_HRP = "sb"
GENESIS = "683e86bd5c6d110d91b94b97137ba6bfe02dbbdb8e3dff722a669b5d69d77af6"
DEFAULT_SERVERS = read_json('servers/Bitcoin-Simnet.json', {})
CHECKPOINTS = []
LN_DNS_SEEDS = []
DATA_DIR = 'simnet'
class BitcoinMainnet(AbstractNet):
NAME = 'Bitcoin'
NAME_LOWER = 'bitcoin'
SHORT_CODE = 'BTC'
TESTNET = False
WIF_PREFIX = 0x80
ADDRTYPE_P2PKH = 0
ADDRTYPE_P2SH = 5
SEGWIT_HRP = "bc"
GENESIS = "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"
DEFAULT_PORTS = {'t': '50001', 's': '50002'}
DEFAULT_SERVERS = read_json('servers/Bitcoin-Mainnet.json', {})
CHECKPOINTS = read_json('checkpoints/Bitcoin-Mainnet.json', [])
BLOCK_HEIGHT_FIRST_LIGHTNING_CHANNELS = 497000
DATA_DIR = None
DEV_FEE_ADDRESS = "3DY72R2mJUnFYUdgrAXLCWjy4gKyWHeuU4"
XPRV_HEADERS = {
'standard': 0x0488ade4, # xprv
'p2wpkh-p2sh': 0x049d7878, # yprv
'p2wsh-p2sh': 0x0295b005, # Yprv
'p2wpkh': 0x04b2430c, # zprv
'p2wsh': 0x02aa7a99, # Zprv
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x0488b21e, # xpub
'p2wpkh-p2sh': 0x049d7cb2, # ypub
'p2wsh-p2sh': 0x0295b43f, # Ypub
'p2wpkh': 0x04b24746, # zpub
'p2wsh': 0x02aa7ed3, # Zpub
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 0
LN_REALM_BYTE = 0
LN_DNS_SEEDS = [
'nodes.lightning.directory.',
'lseed.bitcoinstats.com.',
]
APPLICATION_PAYMENT_REQUEST_TYPE = 'application/bitcoin-paymentrequest'
APPLICATION_PAYMENT_TYPE = 'application/bitcoin-payment'
APPLICATION_PAYMENT_ACK_TYPE = 'application/bitcoin-paymentack'
OPEN_ALIAS_PREFIX = 'btc'
PAYMENT_URI_SCHEME = 'bitcoin'
PAYMENT_REQUEST_PKI_TYPE = "dnssec+btc"
COINBASE_MATURITY = 100
COIN = 100000000
TOTAL_COIN_SUPPLY_LIMIT = 21000000
SIGNED_MESSAGE_PREFIX = b"\x18Bitcoin Signed Message:\n"
BASE_UNITS = {'BTC': 8, 'mBTC': 5, 'bits': 2, 'sat': 0}
BASE_UNITS_INVERSE = inv_dict(BASE_UNITS)
BASE_UNITS_LIST = ['BTC', 'mBTC', 'bits', 'sat']
DECIMAL_POINT_DEFAULT = 5 # mBTC
BLOCK_EXPLORERS = {
'Bitupper Explorer': ('https://bitupper.com/en/explorer/bitcoin/', {
'tx': 'transactions/',
'addr': 'addresses/'
}),
'Bitflyer.jp': ('https://chainflyer.bitflyer.jp/', {
'tx': 'Transaction/',
'addr': 'Address/'
}),
'Blockchain.info': ('https://blockchain.com/btc/', {
'tx': 'tx/',
'addr': 'address/'
}),
'blockchainbdgpzk.onion': ('https://blockchainbdgpzk.onion/', {
'tx': 'tx/',
'addr': 'address/'
}),
'Blockstream.info': ('https://blockstream.info/', {
'tx': 'tx/',
'addr': 'address/'
}),
'Bitaps.com': ('https://btc.bitaps.com/', {
'tx': '',
'addr': ''
}),
'BTC.com': ('https://btc.com/', {
'tx': '',
'addr': ''
}),
'Chain.so': ('https://www.chain.so/', {
'tx': 'tx/BTC/',
'addr': 'address/BTC/'
}),
'Insight.is': ('https://insight.bitpay.com/', {
'tx': 'tx/',
'addr': 'address/'
}),
'TradeBlock.com': ('https://tradeblock.com/blockchain/', {
'tx': 'tx/',
'addr': 'address/'
}),
'BlockCypher.com': ('https://live.blockcypher.com/btc/', {
'tx': 'tx/',
'addr': 'address/'
}),
'Blockchair.com': ('https://blockchair.com/bitcoin/', {
'tx': 'transaction/',
'addr': 'address/'
}),
'blockonomics.co': ('https://www.blockonomics.co/', {
'tx': 'api/tx?txid=',
'addr': '#/search?q='
}),
'OXT.me': ('https://oxt.me/', {
'tx': 'transaction/',
'addr': 'address/'
}),
'smartbit.com.au': ('https://www.smartbit.com.au/', {
'tx': 'tx/',
'addr': 'address/'
}),
'mynode.local': ('http://mynode.local:3002/', {
'tx': 'tx/',
'addr': 'address/'
}),
'system default': ('blockchain:/', {
'tx': 'tx/',
'addr': 'address/'
}),
}
TARGET_TIMESPAN = int(14 * 24 * 60 * 60)
TARGET_SPACING = int(10 * 60)
INTERVAL = int(TARGET_TIMESPAN / TARGET_SPACING)
@classmethod
def get_target(cls, height: int, blockchain) -> int:
index = height // 2016 - 1
if index == -1:
return cls.MAX_TARGET
if index < len(blockchain.checkpoints):
h, t = blockchain.checkpoints[index]
return t
if not height % cls.INTERVAL == 0:
# Get the first block of this retarget period
last = blockchain.read_header(height - 1)
if not last:
raise MissingHeader()
return blockchain.bits_to_target(last['bits'])
# new target
first = blockchain.read_header(height - cls.INTERVAL)
last = blockchain.read_header(height - 1)
if not first or not last:
raise MissingHeader()
bits = last.get('bits')
target = blockchain.bits_to_target(bits)
nActualTimespan = last.get('timestamp') - first.get('timestamp')
nActualTimespan = max(nActualTimespan, cls.TARGET_TIMESPAN // 4)
nActualTimespan = min(nActualTimespan, cls.TARGET_TIMESPAN * 4)
new_target = min(cls.MAX_TARGET,
(target * nActualTimespan) // cls.TARGET_TIMESPAN)
# not any target can be represented in 32 bits:
new_target = blockchain.bits_to_target(
blockchain.target_to_bits(new_target))
return new_target
class ScalarisMainnet(AbstractNet, StakeMixin):
NAME = 'Scalaris'
NAME_LOWER = 'scalaris'
SHORT_CODE = 'SCA'
DATA_DIR = 'scalaris'
OPEN_ALIAS_PREFIX = 'sca'
PAYMENT_URI_SCHEME = 'scalaris'
PAYMENT_REQUEST_PKI_TYPE = "dnssec+sca"
APPLICATION_PAYMENT_REQUEST_TYPE = 'application/scalaris-paymentrequest'
APPLICATION_PAYMENT_TYPE = 'application/scalaris-payment'
APPLICATION_PAYMENT_ACK_TYPE = 'application/scalaris-paymentack'
BASE_UNITS = {'SCA': 8, 'mSCA': 5, 'uSCA': 2, 'swartz': 0}
BASE_UNITS_INVERSE = inv_dict(BASE_UNITS)
BASE_UNITS_LIST = ['SCA', 'mSCA', 'uSCA', 'swartz']
TESTNET = False
WIF_PREFIX = 0x9a
ADDRTYPE_P2PKH = 63
ADDRTYPE_P2SH = 23
XPRV_HEADERS = {
'standard': 0x0488ade4,
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x0488b21e,
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 921
GENESIS = "000003bf95cf7875987b333cc8e49a7c1a83583e5f5039b9af9555a92cb29651"
DEFAULT_PORTS = {'t': '10001', 's': '10002'}
DEFAULT_SERVERS = read_json('servers/Scalaris-Mainnet.json', {})
CHECKPOINTS = read_json('checkpoints/Scalaris-Mainnet.json', [])
LN_REALM_BYTE = 0
LN_DNS_SEEDS = []
COINBASE_MATURITY = 100
COIN = 100000000
TOTAL_COIN_SUPPLY_LIMIT = 999999999999
SIGNED_MESSAGE_PREFIX = b"\x18Scalaris Signed Message:\n"
DECIMAL_POINT_DEFAULT = 8 # SCA
TARGET_SPACING = int(2 * 60)
DGW_FORK_BLOCK = 0
BLOCK_EXPLORERS = {
'explorer.scalaris.info': ('https://explorer.scalaris.info', {
'tx': '/tx/',
'addr': '/address/'
}),
'openchains.info': ('https://openchains.info', {
'tx': '/coin/scalaris/tx/',
'addr': '/coin/scalaris/address/'
}),
}
@classmethod
def hash_raw_header(cls, header):
import algomodule
return hash_encode(algomodule._quark_hash(bfh(header)))
@classmethod
def get_target(cls, height: int, blockchain) -> int:
index = height // 2016 - 1
if index == -1:
return cls.MAX_TARGET
# Blockchain is PURE POS so we dont have the info needed to
# calculate the targets required
return 0
class DonuMainnet(AbstractNet, StakeMixin):
NAME = 'Donu'
NAME_LOWER = 'donu'
SHORT_CODE = 'DONU'
DATA_DIR = 'donu'
OPEN_ALIAS_PREFIX = 'donu'
PAYMENT_URI_SCHEME = 'donu'
PAYMENT_REQUEST_PKI_TYPE = "dnssec+donu"
APPLICATION_PAYMENT_REQUEST_TYPE = 'application/donu-paymentrequest'
APPLICATION_PAYMENT_TYPE = 'application/donu-payment'
APPLICATION_PAYMENT_ACK_TYPE = 'application/donu-paymentack'
BASE_UNITS = {'DONU': 8, 'mDONU': 5, 'uDONU': 2, 'satoshi': 0}
BASE_UNITS_INVERSE = inv_dict(BASE_UNITS)
BASE_UNITS_LIST = ['DONU', 'mDONU', 'uDONU', 'satoshi']
TESTNET = False
WIF_PREFIX = 0x80
ADDRTYPE_P2PKH = 53
ADDRTYPE_P2SH = 5
XPRV_HEADERS = {
'standard': 0x0488ade4,
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x0488b21e,
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 405
SEGWIT_HRP = "dn"
GENESIS = "000000008507af1fdaaf3fed6173005b23b0febf72e7c2094f11f1d057692182"
DEFAULT_PORTS = {'t': '50001', 's': '50002'}
DEFAULT_SERVERS = read_json('servers/Donu-Mainnet.json', {})
CHECKPOINTS = read_json('checkpoints/Donu-Mainnet.json', [])
LN_REALM_BYTE = 0
LN_DNS_SEEDS = []
COINBASE_MATURITY = 100
COIN = 1000000
TOTAL_COIN_SUPPLY_LIMIT = 21000000
SIGNED_MESSAGE_PREFIX = b"\x18Donu Signed Message:\n"
DECIMAL_POINT_DEFAULT = 8 # DONU
TARGET_SPACING = int(2 * 60)
POS_START_HEIGHT = 0
BLOCK_EXPLORERS = {
'CryptoID.info': ('https://chainz.cryptoid.info/donu/', {
'tx': 'tx.dws?',
'addr': 'address.dws?'
}),
'system default': ('blockchain:/', {
'tx': 'tx/',
'addr': 'address/'
}),
}
@classmethod
def get_target(cls, height: int, blockchain) -> int:
index = height // 2016 - 1
if index == -1:
return cls.MAX_TARGET
# Blockchain is PURE POS so we dont have the info needed to
# calculate the targets required
return 0
class NamecoinMainnet(AbstractNet, AuxPowMixin):
NAME = 'Namecoin'
NAME_LOWER = 'namecoin'
SHORT_CODE = 'NMC'
TESTNET = False
WIF_PREFIX = 180
ADDRTYPE_P2PKH = 52
ADDRTYPE_P2SH = 13
SEGWIT_HRP = "nc"
GENESIS = "000000000062b72c5e2ceb45fbc8587e807c155b0da735e6483dfba2f0a9c770"
DEFAULT_PORTS = {'t': '50001', 's': '50002'}
DEFAULT_SERVERS = read_json('servers/Namecoin-Mainnet.json', {})
CHECKPOINTS = read_json('checkpoints/Namecoin-Mainnet.json', [])
BLOCK_HEIGHT_FIRST_LIGHTNING_CHANNELS = 497000
DATA_DIR = 'namecoin'
XPRV_HEADERS = {
'standard': 0x0488ade4, # xprv
'p2wpkh-p2sh': 0x049d7878, # yprv
'p2wsh-p2sh': 0x0295b005, # Yprv
'p2wpkh': 0x04b2430c, # zprv
'p2wsh': 0x02aa7a99, # Zprv
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x0488b21e, # xpub
'p2wpkh-p2sh': 0x049d7cb2, # ypub
'p2wsh-p2sh': 0x0295b43f, # Ypub
'p2wpkh': 0x04b24746, # zpub
'p2wsh': 0x02aa7ed3, # Zpub
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 7
LN_REALM_BYTE = 0
LN_DNS_SEEDS = []
OPEN_ALIAS_PREFIX = 'nmc'
PAYMENT_URI_SCHEME = 'namecoin'
PAYMENT_REQUEST_PKI_TYPE = "dnssec+nmc"
APPLICATION_PAYMENT_REQUEST_TYPE = 'application/namecoin-paymentrequest'
APPLICATION_PAYMENT_TYPE = 'application/namecoin-payment'
APPLICATION_PAYMENT_ACK_TYPE = 'application/namecoin-paymentack'
COINBASE_MATURITY = 100
COIN = 100000000
TOTAL_COIN_SUPPLY_LIMIT = 21000000
SIGNED_MESSAGE_PREFIX = b"\x18Namecoin Signed Message:\n"
BASE_UNITS = {'NMC': 8, 'mNMC': 5, 'uNMC': 2, 'swartz': 0}
BASE_UNITS_INVERSE = inv_dict(BASE_UNITS)
BASE_UNITS_LIST = ['NMC', 'mNMC', 'uNMC', 'swartz']
DECIMAL_POINT_DEFAULT = 5 # mNMC
AUXPOW_CHAIN_ID = 0x0001
AUXPOW_START_HEIGHT = 19200
BLOCK_VERSION_AUXPOW_BIT = 0x100
BLOCK_EXPLORERS = {
'Cyphrs.com': ('https://namecoin.cyphrs.com/', {
'tx': 'tx/',
'addr': 'address/'
}),
'Namecha.in (non-libre; wiretapped by Cloudflare; discriminates against Tor)':
('https://namecha.in/', {
'tx': 'tx/',
'addr': 'address/'
}),
'Bchain.info (non-libre; no name support)':
('https://bchain.info/NMC/', {
'tx': 'tx/',
'addr': 'addr/'
}),
'BitInfoCharts.com (non-libre; wiretapped by Cloudflare; discriminates against Tor; no name support)':
('https://bitinfocharts.com/namecoin/', {
'tx': 'tx/',
'addr': 'address/'
}),
'mynode.local': ('http://mynode.local:3002/', {
'tx': 'tx/',
'addr': 'address/'
}),
'system default': ('blockchain:/', {
'tx': 'tx/',
'addr': 'address/'
}),
}
# The default Bitcoin frame size limit of 1 MB doesn't work for AuxPoW-based
# chains, because those chains' block headers have extra AuxPoW data. A limit
# of 10 MB works fine for Namecoin as of block height 418744 (5 MB fails after
# height 155232); we set a limit of 20 MB so that we have extra wiggle room.
MAX_INCOMING_MSG_SIZE = 20_000_000 # in bytes
TARGET_TIMESPAN = int(14 * 24 * 60 * 60)
TARGET_SPACING = int(10 * 60)
INTERVAL = int(TARGET_TIMESPAN / TARGET_SPACING)
@classmethod
def get_target(cls, height: int, blockchain) -> int:
index = height // 2016 - 1
if index == -1:
return cls.MAX_TARGET
if index < len(blockchain.checkpoints):
h, t = blockchain.checkpoints[index]
return t
if not height % cls.INTERVAL == 0:
# Get the first block of this retarget period
last = blockchain.read_header(height - 1)
if not last:
raise MissingHeader()
return blockchain.bits_to_target(last['bits'])
# new target
if (index * 2016 + 2015 > 19200) and (index * 2016 + 2015 + 1 > 2016):
# Namecoin: Apply retargeting hardfork after AuxPoW start
first = blockchain.read_header(height - cls.INTERVAL - 1)
else:
first = blockchain.read_header(height - cls.INTERVAL)
last = blockchain.read_header(height - 1)
if not first or not last:
raise MissingHeader()
bits = last.get('bits')
target = blockchain.bits_to_target(bits)
nActualTimespan = last.get('timestamp') - first.get('timestamp')
nActualTimespan = max(nActualTimespan, cls.TARGET_TIMESPAN // 4)
nActualTimespan = min(nActualTimespan, cls.TARGET_TIMESPAN * 4)
new_target = min(cls.MAX_TARGET,
(target * nActualTimespan) // cls.TARGET_TIMESPAN)
# not any target can be represented in 32 bits:
new_target = blockchain.bits_to_target(
blockchain.target_to_bits(new_target))
return new_target
class AbosomMainnet(AbstractNet, StakeMixin):
NAME = 'Abosom'
NAME_LOWER = 'abosom'
SHORT_CODE = 'ABOSOM'
DATA_DIR = 'abosom'
OPEN_ALIAS_PREFIX = 'abosom'
PAYMENT_URI_SCHEME = 'abosom'
PAYMENT_REQUEST_PKI_TYPE = "dnssec+abosom"
APPLICATION_PAYMENT_REQUEST_TYPE = 'application/abosom-paymentrequest'
APPLICATION_PAYMENT_TYPE = 'application/abosom-payment'
APPLICATION_PAYMENT_ACK_TYPE = 'application/abosom-paymentack'
BASE_UNITS = {'ABOSOM': 8, 'mABOSOM': 5, 'uABOSOM': 2, 'satoshi': 0}
BASE_UNITS_INVERSE = inv_dict(BASE_UNITS)
BASE_UNITS_LIST = ['ABOSOM', 'mABOSOM', 'uABOSOM', 'satoshi']
TESTNET = False
WIF_PREFIX = 0x80
ADDRTYPE_P2PKH = 75
ADDRTYPE_P2SH = 78
XPRV_HEADERS = {
'standard': 0x800001c8,
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x800101c8,
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 704
GENESIS = "00000e8048ffa0a80549ed405640e95e01590e70baf4888ef594d87402635697"
DEFAULT_PORTS = {'t': '50041', 's': '50042'}
DEFAULT_SERVERS = read_json('servers/Abosom-Mainnet.json', {})
CHECKPOINTS = read_json('checkpoints/Abosom-Mainnet.json', [])
LN_REALM_BYTE = 0
LN_DNS_SEEDS = []
COINBASE_MATURITY = 8
COIN = 1000000
TOTAL_COIN_SUPPLY_LIMIT = 110000000
SIGNED_MESSAGE_PREFIX = b"\x18Abosom Signed Message:\n"
DECIMAL_POINT_DEFAULT = 8 # CRW
TARGET_TIMESPAN = int(24 * 60 * 60)
TARGET_SPACING = int(60)
INTERVAL = int(TARGET_TIMESPAN / TARGET_SPACING)
POS_START_HEIGHT = 1
BLOCK_EXPLORERS = {
'system default': ('blockchain:/', {
'tx': 'tx/',
'addr': 'address/'
}),
}
@classmethod
def hash_raw_header(cls, header):
import algomodule
return hash_encode(algomodule._x11_hash(bfh(header)))
@classmethod
def is_pos_active(cls, header) -> bool:
return True
@classmethod
def get_target(cls, height: int, blockchain) -> int:
index = height // 2016 - 1
if index == -1:
return cls.MAX_TARGET
if index < len(blockchain.checkpoints):
h, t = blockchain.checkpoints[index]
return t
return cls.get_target_btc(height, blockchain)
@classmethod
def get_target_btc(cls, height: int, blockchain) -> int:
if not height % cls.INTERVAL == 0:
# Get the first block of this retarget period
last = blockchain.read_header(height - 1)
if not last:
raise MissingHeader()
return blockchain.bits_to_target(last['bits'])
# new target
first = blockchain.read_header(height - cls.INTERVAL)
last = blockchain.read_header(height - 1)
if not first or not last:
raise MissingHeader()
bits = last.get('bits')
target = blockchain.bits_to_target(bits)
nActualTimespan = last.get('timestamp') - first.get('timestamp')
nActualTimespan = max(nActualTimespan, cls.TARGET_TIMESPAN // 4)
nActualTimespan = min(nActualTimespan, cls.TARGET_TIMESPAN * 4)
new_target = min(cls.MAX_TARGET,
(target * nActualTimespan) // cls.TARGET_TIMESPAN)
# not any target can be represented in 32 bits:
new_target = blockchain.bits_to_target(
blockchain.target_to_bits(new_target))
return new_target
class BitcoinTestnet(BitcoinMainnet):
NAME = 'Bitcoin Testnet'
NAME_LOWER = 'testnet bitcoin'
TESTNET = True
WIF_PREFIX = 0xef
ADDRTYPE_P2PKH = 111
ADDRTYPE_P2SH = 196
SEGWIT_HRP = "tb"
GENESIS = "000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"
DEFAULT_PORTS = {'t': '51001', 's': '51002'}
DEFAULT_SERVERS = read_json('servers/Bitcoin-Testnet.json', {})
CHECKPOINTS = read_json('checkpoints/Bitcoin-Testnet.json', [])
DATA_DIR = 'testnet'
XPRV_HEADERS = {
'standard': 0x04358394, # tprv
'p2wpkh-p2sh': 0x044a4e28, # uprv
'p2wsh-p2sh': 0x024285b5, # Uprv
'p2wpkh': 0x045f18bc, # vprv
'p2wsh': 0x02575048, # Vprv
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x043587cf, # tpub
'p2wpkh-p2sh': 0x044a5262, # upub
'p2wsh-p2sh': 0x024289ef, # Upub
'p2wpkh': 0x045f1cf6, # vpub
'p2wsh': 0x02575483, # Vpub
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 1
LN_REALM_BYTE = 1
LN_DNS_SEEDS = [
# TODO investigate this again
# 'test.nodes.lightning.directory.', # times out.
# 'lseed.bitcoinstats.com.', # ignores REALM byte and returns mainnet peers...
]
BLOCK_EXPLORERS = {
'Bitaps.com': ('https://tbtc.bitaps.com/', {
'tx': '',
'addr': ''
}),
'BlockCypher.com': ('https://live.blockcypher.com/btc-testnet/', {
'tx': 'tx/',
'addr': 'address/'
}),
'Blockchain.info': ('https://www.blockchain.com/btctest/', {
'tx': 'tx/',
'addr': 'address/'
}),
'Blockstream.info': ('https://blockstream.info/testnet/', {
'tx': 'tx/',
'addr': 'address/'
}),
'smartbit.com.au': ('https://testnet.smartbit.com.au/', {
'tx': 'tx/',
'addr': 'address/'
}),
'system default':
('blockchain://000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943/',
{
'tx': 'tx/',
'addr': 'address/'
}),
}
@classmethod
def get_target(cls, height: int, blockchain) -> int:
return 0
class CrowncoinMainnet(AbstractNet, AuxPowMixin, StakeMixin):
NAME = 'Crown'
NAME_LOWER = 'crown'
SHORT_CODE = 'CRW'
DATA_DIR = 'crowncoin'
OPEN_ALIAS_PREFIX = 'crw'
PAYMENT_URI_SCHEME = 'crown'
PAYMENT_REQUEST_PKI_TYPE = "dnssec+crw"
APPLICATION_PAYMENT_REQUEST_TYPE = 'application/crowncoin-paymentrequest'
APPLICATION_PAYMENT_TYPE = 'application/crowncoin-payment'
APPLICATION_PAYMENT_ACK_TYPE = 'application/crowncoin-paymentack'
BASE_UNITS = {'CRW': 8, 'mCRW': 5, 'uCRW': 2, 'swartz': 0}
BASE_UNITS_INVERSE = inv_dict(BASE_UNITS)
BASE_UNITS_LIST = ['CRW', 'mCRW', 'uCRW', 'swartz']
TESTNET = False
WIF_PREFIX = 0x80
ADDRTYPE_P2PKH = bfh('017507')
ADDRTYPE_P2SH = bfh('0174f1')
XPRV_HEADERS = {
'standard': 0x0488ade4,
}
XPRV_HEADERS_INV = inv_dict(XPRV_HEADERS)
XPUB_HEADERS = {
'standard': 0x0488b21e,
}
XPUB_HEADERS_INV = inv_dict(XPUB_HEADERS)
BIP44_COIN_TYPE = 72
GENESIS = "0000000085370d5e122f64f4ab19c68614ff3df78c8d13cb814fd7e69a1dc6da"
DEFAULT_PORTS = {'t': '50001', 's': '50002'}
DEFAULT_SERVERS = read_json('servers/Crowncoin-Mainnet.json', {})
CHECKPOINTS = read_json('checkpoints/Crowncoin-Mainnet.json', [])
LN_REALM_BYTE = 0
LN_DNS_SEEDS = []
COINBASE_MATURITY = 100
COIN = 100000000
TOTAL_COIN_SUPPLY_LIMIT = 21000000
SIGNED_MESSAGE_PREFIX = b"\x18Crowncoin Signed Message:\n"
DECIMAL_POINT_DEFAULT = 8 # CRW
AUXPOW_CHAIN_ID = 0x14
AUXPOW_START_HEIGHT = 45327
BLOCK_VERSION_AUXPOW_BIT = 0x100
DGW_FORK_BLOCK = 1059780
TARGET_TIMESPAN = int(14 * 24 * 60 * 60)
TARGET_SPACING = int(60)
INTERVAL = int(TARGET_TIMESPAN / TARGET_SPACING)
POS_START_HEIGHT = 2330000
MIN_POS_WORK_LIMIT = 0x00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
BLOCK_EXPLORERS = {
'CryptoID.info': ('https://chainz.cryptoid.info/crw/', {'tx': 'tx.dws?', 'addr': 'address.dws?'}),
'system default': ('blockchain:/', {'tx': 'tx/', 'addr': 'address/'}),
}
# The default Bitcoin frame size limit of 1 MB doesn't work for AuxPoW-based
# chains, because those chains' block headers have extra AuxPoW data.
# we set a limit of 40 MB so that we have extra wiggle room.
MAX_INCOMING_MSG_SIZE = 40_000_000 # in bytes
@classmethod
def get_target(cls, height: int, blockchain) -> int:
index = height // 2016 - 1
if index == -1:
return cls.MAX_TARGET
if index < len(blockchain.checkpoints):
h, t = blockchain.checkpoints[index]
return t
if height >= cls.DGW_FORK_BLOCK:
return cls.get_target_dgw(height, blockchain)
return cls.get_target_btc(height, blockchain)
@classmethod
def get_target_btc(cls, height: int, blockchain) -> int:
if not height % cls.INTERVAL == 0:
# Get the first block of this retarget period
last = blockchain.read_header(height - 1)
if not last:
raise MissingHeader()
return blockchain.bits_to_target(last['bits'])
# new target
first = blockchain.read_header(height - cls.INTERVAL)
last = blockchain.read_header(height - 1)
if not first or not last:
raise MissingHeader()
bits = last.get('bits')
target = blockchain.bits_to_target(bits)
nActualTimespan = last.get('timestamp') - first.get('timestamp')
nActualTimespan = max(nActualTimespan, cls.TARGET_TIMESPAN // 4)
nActualTimespan = min(nActualTimespan, cls.TARGET_TIMESPAN * 4)
new_target = min(cls.MAX_TARGET, (target * nActualTimespan) // cls.TARGET_TIMESPAN)
# not any target can be represented in 32 bits:
new_target = blockchain.bits_to_target(blockchain.target_to_bits(new_target))
return new_target
@classmethod
def get_target_dgw(cls, height: int, blockchain) -> int:
# get last solved header
current = blockchain.read_header(height - 1)
nActualTimespan = 0
lastBlockTime = 0
pastBlocksMin = 24
pastBlocksMax = 24
countBlocks = 0
for i in range(pastBlocksMax):
countBlocks += 1
if not current:
raise BaseException('header at height: %d is not stored in db' % (height - i - 1))
bits = current.get('bits')
if countBlocks <= pastBlocksMin:
if countBlocks == 1:
past_difficulty_avg = blockchain.bits_to_target(bits)
else:
past_difficulty_avg = (past_difficulty_avg_prev * countBlocks + blockchain.bits_to_target(bits)) // (countBlocks + 1)
past_difficulty_avg_prev = past_difficulty_avg
if lastBlockTime > 0:
nActualTimespan += lastBlockTime - current.get('timestamp')
lastBlockTime = current.get('timestamp')
# get previous block
current = blockchain.read_header(height - i - 2)
target_timespan = countBlocks * cls.TARGET_SPACING
nActualTimespan = max(nActualTimespan, target_timespan // 3)
nActualTimespan = min(nActualTimespan, target_timespan * 3)
new_target = min(cls.MAX_TARGET, (past_difficulty_avg * nActualTimespan) // target_timespan)
return new_target
@classmethod
def hash160_to_b58_address(cls, h160: bytes, addrtype: int) -> str:
s = addrtype + h160
return base_encode(s+Hash(s)[0:4], base=58)
@classmethod
def b58_address_to_hash160(cls, addr):
addr = to_bytes(addr, 'ascii')
_bytes = base_decode(addr, length=27, base=58)
return _bytes[0:3], _bytes[3:23]
