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from getpass import getpass
from pprint import pprint
from bitshares.asset import Asset
from bitshares import BitShares
from bitshares.instance import set_shared_bitshares_instance
from bitshares.price import Price
from bitshares.market import Market
import pendulum
import math
def get_hertz_feed(reference_timestamp, current_timestamp, period_days, phase_days, reference_asset_value, amplitude):
"""
Given the reference timestamp, the current timestamp, the period (in days), the phase (in days), the reference asset value (ie 1.00) and the amplitude (> 0 && < 1), output the current hertz value.
You can use this formula for an alternative HERTZ asset!
Be aware though that extreme values for amplitude|period will create high volatility which could cause black swan events. BSIP 18 should help, but best tread carefully!
"""
hz_reference_timestamp = pendulum.parse(reference_timestamp).timestamp() # Retrieving the Bitshares2.0 genesis block timestamp
hz_period = pendulum.SECONDS_PER_DAY * period_days
hz_phase = pendulum.SECONDS_PER_DAY * phase_days
hz_waveform = math.sin(((((current_timestamp - (hz_reference_timestamp + hz_phase))/hz_period) % 1) * hz_period) * ((2*math.pi)/hz_period)) # Only change for an alternative HERTZ ABA.
print(hz_waveform)
hz_value = reference_asset_value + ((amplitude * reference_asset_value) * hz_waveform)
return hz_value
if __name__ == "__main__":
full_node_list = [
"wss://eu.nodes.bitshares.works", #location: "Central Europe - BitShares Infrastructure Program"
"wss://us.nodes.bitshares.works", #location: "U.S. West Coast - BitShares Infrastructure Program"
"wss://sg.nodes.bitshares.works", #location: "Singapore - BitShares Infrastructure Program"
"wss://bitshares.crypto.fans/ws", #location: "Munich, Germany"
"wss://bit.btsabc.org/ws", #location: "Hong Kong"
"wss://api.bts.blckchnd.com" #location: "Falkenstein, Germany"
"wss://openledger.hk/ws", #location: "Hong Kong"
"wss://bitshares-api.wancloud.io/ws", #location: "China"
"wss://dex.rnglab.org", #location: "Netherlands"
"wss://dexnode.net/ws", #location: "Dallas, USA"
"wss://kc-us-dex.xeldal.com/ws", #location: "Kansas City, USA"
"wss://la.dexnode.net/ws", #location: "Los Angeles, USA"
]
bitshares_api_node = BitShares(full_node_list, nobroadcast=False)
# Set the API node above as the shared Bitshares instance for the rest of the script
set_shared_bitshares_instance(bitshares_api_node)
# Getting the value of USD in BTS
market = Market("USD:BTS") # Set reference market to USD:BTS
price = market.ticker()["quoteSettlement_price"] # Get Settlement price of USD
price.invert() # Switching from quantity of BTS per USD to USD price of one BTS.
#Hertz variables:
#Change only for alternative Algorithm Based Assets.
hertz_reference_timestamp = "2015-10-13T14:12:24+00:00" # Bitshares 2.0 genesis block timestamp
hertz_current_timestamp = pendulum.now().timestamp() # Current timestamp for reference within the hertz script
hertz_amplitude = 0.14 # 14% fluctuating the price feed $+-0.14 (2% per day)
hertz_period_days = 28 # Aka wavelength, time for one full SIN wave cycle.
hertz_phase_days = 0.908056 # Time offset from genesis till the first wednesday, to set wednesday as the primary Hz day.
hertz_reference_asset_value = 1.00 # $1.00 USD, not much point changing as the ratio will be the same.
# Calculate the current value of Hertz in USD
hertz_value = get_hertz_feed(hertz_reference_timestamp, hertz_current_timestamp, hertz_period_days, hertz_phase_days, hertz_reference_asset_value, hertz_amplitude)
hertz = Price(hertz_value, "USD/HERTZ") # Limit the hertz_usd decimal places & convert from float.
print(hertz)
# Calculate HERTZ price in BTS (THIS IS WHAT YOU PUBLISH!)
hertz_bts = price.as_base("BTS") * hertz.as_quote("HERTZ")
print("Hz-Quote: {}".format(hertz.as_quote("HERTZ")))
print("base: {}".format(price.as_base("BTS")))
hertz_core_exchange_rate = 0.80 # 20% offset, CER > Settlement!
hertz_cer = hertz_bts * hertz_core_exchange_rate
# Some printed outputs
print("Price of HERTZ in USD: {}".format(hertz))
print("Price of HERTZ in BTS: {}".format(hertz_bts))
print("Price of BTS in USD: {}".format(price))
print("Price of USD in BTS: {}".format(price.invert()))
# Unlock the Bitshares wallet
hertz.bitshares.wallet.unlock("LOCAL_WALLET_PASSWORD")
"""
Publish the price feed to the BTS DEX
Make sure you change the 'account' before executing.
Don't change any of the other values.
"""
pprint(hertz.bitshares.publish_price_feed(
"HERTZ",
hertz_bts,
cer=hertz_cer, # Setting in line with Wackou's price feed scripts
mssr=110,
mcr=200,
account="REPLACE_WITH_YOUR_USERNAME"
))
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