ABROWNFOX001

Posted on Sep 22

TWAP60 Bugs That Still Show Up in September

GitHub: https://github.com/abrownfox0/abrownfox001-twap60-prediction-trigger-system

YouTube walkthrough: https://www.youtube.com/watch?v=XzhugRL6BV4

Live profile: https://polymarket.com/@abrownfox001

Part 1 said the patch window is over. 60s Chainlink TWAP is the floor.

Part 2 is what still breaks after people think they “already switched to TWAP.”

1. The Rule Is Stable. The Implementations Are Not.

Live 5-minute crypto Up/Down pays 60-second Chainlink TWAP.

Open reference and final score should be the same family.

That sentence has been true since the mid-August 5m cutover.

The bugs I still see are not “is TWAP live?” They are:

wrong window
wrong open pin
stale socket treated as a live price
research labels from a retired series

A month is long enough for those bugs to look like “the strategy stopped working.”

2. The Leftover 30s Problem

5m markets first settled on 30s TWAP, then moved to 60s for markets deployed since August 14.

Public repos and notebooks still mix the two.

Code thinks	Live market pays	What you get
Snapshot / CEX close	60s TWAP	Obsolete target
30s TWAP	60s TWAP	Smoother series, wrong features
60s live, snapshot open	60s vs 60s	Silent third market
60s open + 60s live	60s TWAP	The only coherent book

If twapFeed.ts can still subscribe to thirty, that is a research toggle. It is not a production path for new 5m slots.

3. The Slot Record That Has to Exist

After a month of production, every completed slot should have:

slot_id
twap_open
twap_now_at_decision
twap_end
t_left
resolution_src   # rtds_twap | gamma
feed_age_ms
window_seconds   # must be 60

If those fields are missing, you cannot debug:

mixed-window contamination
RTDS gaps
“model was right, feed was stale”
gamma fallback vs live path disagreement

Hope is not a resolution source.

4. Stale RTDS Is Still the Quiet Killer

RTDS made official TWAP easy to consume. It did not make the socket immortal.

September operating rule:

connected ≠ fresh
heartbeat ≠ a new TWAP observation
CEX mid is lead-lag, not a backup settlement feed
if feed_age_ms blows the budget, skip the slot

The public engine already treats the feed as a first-class module. Production has to treat freshness as a hard fail.

5. Why CEX Last Still Sneaks Back In

After TWAP, last-tick sniping died as a settlement exploit.

It did not die as a coding habit.

Typical sneak paths:

label builder still uses Binance close
dashboard plots spot and the model trains on the plot
open pin taken from CEX mid “because it is faster”
one missing RTDS tick replaced with last trade

Those shortcuts recreate the snapshot bot inside a TWAP repo.

Measure it instead:

disagree_rate = P(sign(cex_last - open) != sign(twap_end - twap_open))

If that rate is high and your model still keys off cex_last, the patch window did not include you.

6. Expected Tech Work on This Layer

Not a new strategy. Hygiene:

Force window_seconds = 60 in production config
Pin open only from the 60s series
Drop 30s from the live path
Hard-fail on stale TWAP
Keep gamma as post-slot scoring fallback, not a live substitute
Retune path features on post-Aug 14 data only

The private P(up) can stay closed. The pin cannot.

7. How This Shows Up on @abrownfox001

The live account should still look like a path process:

mid-band fills
buys after the first thin seconds
later scratches
not a close-bell cluster

If the footprint flips back to last-second bursts, the settlement story and the fills have diverged. Watch the activity tab for that before you trust a changelog.

8. What Part 3 Covers

Settlement hygiene is necessary. It is not sufficient.

Part 3 is the other half of the new floor: 150ms taker delay, volume-tier limits, and whether mid-band 50¢ clips still fill well enough to scratch.

Links

Repo: https://github.com/abrownfox0/abrownfox001-twap60-prediction-trigger-system
Video: https://www.youtube.com/watch?v=XzhugRL6BV4
Live activity: https://polymarket.com/@abrownfox001?tab=activity

Not financial advice. Confirm the live market’s resolution source before you trade it.

If you have more questions, please feel free to contact me at any time: https://t.me/abrownfox001

My Polymarket Activity: https://polymarket.com/@abrownfox001?tab=activity

#Polymarket #TWAP #Chainlink #BTC #TradingBot #AlgoTrading #PredictionMarkets

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