docs: update README with Parquet quickstart, Gist backtest script, and ALPHA50 flash pass

README.md

@@ -8,27 +8,29 @@ tags:
 - market-making
 - high-frequency-trading
 - crypto
-pretty_name: PolyPulse Polymarket 1Hz Order Book Dataset (Empirical Sample)
+- parquet
+pretty_name: PolyPulse Polymarket Empirical Order Book Dataset (1Hz & 4Hz Sample)
 size_categories:
 - n<1K
 task_categories:
 - tabular
 ---
 
-# PolyPulse — Empirical Polymarket Order Book Dataset (1Hz Sample)
+# PolyPulse — Empirical Polymarket Order Book Dataset
 
 Empirical, isochronous discrete snapshot matrix combining **Polymarket CLOB Best Bid/Ask (BBO)**, **Binance Spot Ticks**, and **Chainlink RTDS Oracle feeds**.
 
-> **Live Production Hub**: [polypulse.ogs.biz.id](https://polypulse.ogs.biz.id)  
-> **Official Creator**: OmGoStudio (OGS)
+> **Live Hub**: [https://polypulse.ogs.biz.id](https://polypulse.ogs.biz.id)  
+> **Open-Source Python Arbitrage Backtest**: [GitHub Gist](https://gist.github.com/OmGoStudio/562f0b521245255964a4026ca18e8c1b)  
+> **Instant 24-Hour Flash Pass ($2.49 with ALPHA50)**: [Gumroad Checkout](https://ogshub.gumroad.com/l/polypulse-24h-flash/ALPHA50)
 
 ---
 
 ## Dataset Description
 
-PolyPulse eliminates survivorship bias and polling jitter in prediction market research. While standard public API endpoints suffer from rate limits and variable network latency, this dataset aligns three synchronized liquidity venues onto a strict **1.0-second isochronous grid**:
+PolyPulse eliminates survivorship bias and polling jitter in prediction market research. While standard public API endpoints suffer from rate limits and variable network latency, this dataset aligns three synchronized liquidity venues onto strict **1.0-second (1Hz)** and **0.25-second (4Hz Vilnius Node)** grids:
 
-1. **Polymarket Central Limit Order Book (CLOB)**: Bid/Ask depth for UP/DOWN binary contracts.
+1. **Polymarket Central Limit Order Book (CLOB)**: Microsecond-stamped Bid/Ask depth for UP/DOWN binary contracts.
 2. **Binance Spot Anchor Feed**: Underlying reference asset spot price.
 3. **Chainlink Real-Time Data Streams (RTDS)**: Decentralized oracle TWAP and benchmark index prices.
 
@@ -38,46 +40,56 @@ PolyPulse eliminates survivorship bias and polling jitter in prediction market r
 
 | Column | Type | Description |
 | :--- | :--- | :--- |
-| sec | float | Elapsed seconds within continuous observation candle |
-| 	imestamp_utc | string | ISO 8601 UTC timestamp synchronized across feeds |
-| nb_price | float | Underlying reference spot price (Binance) |
-| pm_token_up_bid | float | Polymarket Best Bid for YES/UP contract ($) |
-| pm_token_up_ask | float | Polymarket Best Ask for YES/UP contract ($) |
-| pm_token_down_bid| float | Polymarket Best Bid for NO/DOWN contract ($) |
-| pm_token_down_ask| float | Polymarket Best Ask for NO/DOWN contract ($) |
-| cl_twap | float | Chainlink Oracle TWAP benchmark |
-| parity_edge | float | Empirical sum arbitrage deviation (.00 - (Bid_Up + Bid_Down)) |
-| parity_edge_bps | float | Parity mispricing expressed in Basis Points (bps) |
-| maker_pair_cost | float | Combined cost to acquire full outcome set at Bid ($) |
-| 	aker_pair_cost | float | Combined cost to acquire full outcome set at Ask ($) |
-| 	rade_count | int | Aggregated trade execution events in the 1-second slice |
+| `sec` | float | Elapsed seconds within continuous observation candle |
+| `timestamp_utc` | string | ISO 8601 UTC timestamp synchronized across feeds |
+| `bnb_price` | float | Underlying reference spot price (Binance) |
+| `pm_token_up_bid` | float | Polymarket Best Bid for YES/UP contract ($) |
+| `pm_token_up_ask` | float | Polymarket Best Ask for YES/UP contract ($) |
+| `pm_token_down_bid`| float | Polymarket Best Bid for NO/DOWN contract ($) |
+| `pm_token_down_ask`| float | Polymarket Best Ask for NO/DOWN contract ($) |
+| `cl_twap` | float | Chainlink Oracle TWAP benchmark |
+| `parity_edge` | float | Empirical sum arbitrage deviation ($1.00 - (Bid_Up + Bid_Down)) |
+| `parity_edge_bps` | float | Parity mispricing expressed in Basis Points (bps) |
+| `maker_pair_cost` | float | Combined cost to acquire full outcome set at Bid ($) |
+| `taker_pair_cost` | float | Combined cost to acquire full outcome set at Ask ($) |
+| `trade_count` | int | Aggregated trade execution events in the 1-second slice |
 
 ---
 
-## Quickstart in Python (Pandas)
+## Quickstart in Python
 
-`python
+### Using Apache Parquet (Recommended)
+
+```python
 import pandas as pd
 
-# Load directly from Hugging Face
-df = pd.read_csv('https://huggingface.co/datasets/OmGoStudio/polypulse-polymarket-sample/raw/main/polypulse_sample_preview.csv')
+# Load Apache Parquet directly
+df = pd.read_parquet("https://huggingface.co/datasets/OmGoStudio/polypulse-polymarket-sample/resolve/main/polypulse_sample_preview.parquet")
+
+print(f"Loaded {len(df)} discrete snapshot ticks.")
+print(df[["timestamp_utc", "pm_token_up_bid", "pm_token_down_bid", "parity_edge_bps"]].head())
+```
 
-print(f'Total snapshot ticks: {len(df)}')
-print(df[['timestamp_utc', 'pm_token_up_bid', 'pm_token_down_bid', 'parity_edge_bps']].head())
-`
+### Full Arbitrage Execution Backtest
+Check out the complete runnable open-source arbitrage backtest script on GitHub Gist:  
+👉 **[polymarket_4hz_arbitrage_backtest.py](https://gist.github.com/OmGoStudio/562f0b521245255964a4026ca18e8c1b)**
 
 ---
 
-## Commercial Institutional Datasets
+## Instant Commercial Feeds & Flash Passes
 
-For full institutional backtesting, multi-day historical archives and ultra-low latency feeds are available with instant download:
+Use coupon code **`ALPHA50`** for 50% off all packages:
 
-| Package | Granularity | Total Ticks | One-Time Access | Direct Store |
+| Package | Granularity | Rows | Price (with ALPHA50) | Checkout |
 | :--- | :--- | :--- | :--- | :--- |
-| **3 Days Standard** | 1Hz (1.0s) | 259,200 rows | ** USD** | [Gumroad Checkout](https://ogshub.gumroad.com/l/ywiqa) / [PolyPulse](https://polypulse.ogs.biz.id) |
-| **3 Days Vilnius Feed** | 4Hz (0.25s) | 1,036,800 rows | ** USD** | [Gumroad Checkout](https://ogshub.gumroad.com/l/bcppkw) / [PolyPulse](https://polypulse.ogs.biz.id) |
-| **1 Week Bundle** | 1Hz & 4Hz | 3,024,000+ rows | ** USD** | [Gumroad Checkout](https://ogshub.gumroad.com/l/axwvl) / [PolyPulse](https://polypulse.ogs.biz.id) |
-| **1 Month Archive** | Master Grid | 10,000,000+ rows | ** USD** | [Gumroad Checkout](https://ogshub.gumroad.com/l/ogswmh) / [PolyPulse](https://polypulse.ogs.biz.id) |
+| **24-Hour Flash Backtest Pass** | 4Hz (0.25s) Vilnius Feed | 345,600 | **$2.49** | [Instant Access](https://ogshub.gumroad.com/l/polypulse-24h-flash/ALPHA50) |
+| **3 Days Standard** | 1Hz (1.0s) | 259,200 | **$9.00** | [Instant Access](https://ogshub.gumroad.com/l/ywiqa/ALPHA50) |
+| **3 Days Vilnius Feed** | 4Hz (0.25s) | 1,036,800 | **$24.00** | [Instant Access](https://ogshub.gumroad.com/l/bcppkw/ALPHA50) |
+| **1 Week Institutional Bundle** | 1Hz & 4Hz | 3,024,000+ | **$49.50** | [Instant Access](https://ogshub.gumroad.com/l/axwvl) |
+| **1 Month Full Archive** | Master Grid | 10,000,000+ | **$124.50** | [Instant Access](https://ogshub.gumroad.com/l/ogswmh) |
 
-Support: contact@ogs.biz.id  
-Infrastructure: [polypulse.ogs.biz.id](https://polypulse.ogs.biz.id)
+Crypto payments (USDC / USDT on Polygon POS) are also supported natively on our web terminal:  
+🌐 **[https://polypulse.ogs.biz.id](https://polypulse.ogs.biz.id)**
+
+---
+*Maintained by OmGoStudio (OGS) Quant Research Division.*