I have produced a price feed generation script in Haskell for the HERTZ FBA:
https://github.com/grctest/HERTZ-Price-feed-script/blob/master/hertz.hs

It currently scrapes the price feed for XDR from cryptofresh, averages the last 10 published price feeds and outputs the results in a CSV file. It's outputting to a CSV for use in excel for charting.

Any suggestions?

What is Hertz?

Hertz is a highly experimental Market Pegged Asset (MPA) created on the Bitshares network. Elected Bitshares witnesses will publish price feeds which are pegged against the United States Dollar (USD) and predictably oscillates using a sine wave algorithm. The sine wave has an amplitude of 14% and a period of 28 days, thus the price feed value changes 2% every day and a resulting max price feed value of $1.14 and min of $0.86 (Note: Depending on the combination of Bitshares price volatility and age of price feeds published by witnesses, these limits may not always hold).

Hertz tokens are shorted (borrowed) into existence by users on the Bitshares network with at least 175% backing collateral in Bitshares; there is no centralized issuance and asset creator permissions have been restricted for increased decentralization.

By implementing a sine wave phase offset (date/time), we are able to make each Wednesday (mid working week) the most important day for Hertz.

Price feeds:
Reference Python scripts & calculator (https://github.com/BTS-CM/scripts)
  hertz_calculator.xlsx : A spreadsheet for evaluating the effect of different sine wave variables (amplitude, period, etc).
  hertz-verification.py : Used for verifying that the phase offset lines up appropriately.
  hertz-feed.py : What you'd use if you don't use wackou or xeroc's price feed scripts.
Wackou's 'BTS_Tools' (Only use if pull request #36 is merged, OR if you change 1/3 to 0.14 yourself manually).
  https://github.com/wackou/bts_tools/blob/master/bts_tools/feeds.py#L275
  https://github.com/wackou/bts_tools/blob/master/bts_tools/feeds.py#L441
Xeroc's 'Bitshares-PriceFeed' (Issue #25 addresses the inaccurate amplitude comments)
  https://github.com/xeroc/bitshares-pricefeed/blob/master/bitshares_pricefeed/examples/hertz.yaml

Surrendered FBA settings
- Disable confidential transactions:
- Require holders to be white-listed:
- Issuer may transfer asset back to himself:
- Issuer must approve all transfers

TODO
- Get witnesses to publish price feeds for the Hertz MPA

Links
https://sites.google.com/view/hertz-aba/

Best regards,Customminer.

Why would anybody buy VILLAIN if it's guaranteed to be worth less tomorrow?
Surely VILLAIN would need to have some other pro-buyer features to attract them to the asset.

Maybe holding it could be like a lottery ticket?
A small chance to gain +20%, but a definite chance of losing at least -5%.
Could this lottery be paid for out of the least collateralised short or something? (noob)

Primarily for the liquidity, there would be a constant supply of it at the price feed unlike bitUSD which doesn't incentivize lending it into existence.
If you hold VILLAIN and you need to liquidate it you could just settle it and get the BTS back at the feed price.

Perhaps the fees earned could be redistributed proportionally to the holders or to the parties involved in filled orders?

-------

A new formula backed asset enters the arena!

Introducing Pendulum!

X_Period = MOD((CurrentBlock-PendulumGenesisBlock),BlocksInPeriod)/BlocksInPeriod    //This will give us a value between 0 and 0.99[.....] (period) continuously.

Amplitude=0.5  //Varying the reference asset by 50%

PI=3.14159265359

Pendulum_Value = [USD | XDR] + (Amplitude*SIN(X_Period*(2*PI)))

Thus we get a formula backed asset which is representative of [USD|XDR] which both rises and falls in a predictable manner, thus having a phase which encourages the sale of the token and a phase which encourages the buying of the token.



https://steemit.com/bitshares/@cm-steem/a-new-formula-backed-asset-enters-the-arena-pendulum

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Anyone have any other ideas for FBA?

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Great post Thom! 

Great work!

Hey,

Would you be able to include http://cryptofresh.com/a/ALTCAP.XDR in your supported MPA tokens please?

Thanks

AGS hasn't been a thing for years, you were sharedropped against for BTSX and that was the end of it.

Something wrong with btsbots? I'm unable to get the bot running today, and I've got the following errors in the console:
unreachable code after return statement[Learn More]  ef1f8ace46776681012bcd9fdcbacba5f253ce2c.js:21:27050
unreachable code after return statement[Learn More]  ef1f8ace46776681012bcd9fdcbacba5f253ce2c.js:30:6977
unreachable code after return statement[Learn More]  ef1f8ace46776681012bcd9fdcbacba5f253ce2c.js:35:5851

Side note - the android application seems to freeze/stutter when I use the chat, specifically when my keyboard is opened to type with.

Thanks