On-Chain Fills

On-chain fills are sourced from Polygon. Available since 2026-02-01.

Data type: onchain_fills

Format: Single-market Parquet file by slug. Use the Day API for daily ZIP archives.

import pandas as pd

slug = "btc-updown-5m-1783842600"
data_type = "onchain_fills"
url = f"https://api.pmdata.dev/download/{data_type}/{slug}.parquet"

df = pd.read_parquet(
    url,
    storage_options={
        "api_key": "<YOUR_API_KEY>",
        "User-Agent": "Mozilla/5.0",
    },
)
print(df.head())

Schema

Field	Type	Description
timestamp	timestamp	On-chain transaction timestamp.
maker	string	Maker wallet address.
taker	string	Taker wallet address.
outcome	string	Outcome token, usually Yes or No.
maker_side	string	Maker side, BUY or SELL.
taker_side	string	Taker side, BUY or SELL.
price	float	Execution price.
usd_amount	float	Trade notional in USD.
token_amount	float	Outcome token amount.
transactionHash	string	Polygon transaction hash.