Prediction market data,
down to the tick.
Every Chainlink settlement report, every order-book change and every trade print from Polymarket and Predict.fun crypto Up/Down markets — collected continuously, checksummed, and downloadable by API.
What makes this different
Order books and trades are becoming commodity. The settlement side is not.
The settlement feed itself
Not a reconstruction — the actual Chainlink Data Streams reports these markets settle on, tick by tick, as full-precision fixed-point integers. Including the TWAP 30s/60s streams that became the settlement line on 2026-08-07. You can recompute any outcome yourself and check it against the official one.
Outcome and strike, per market
Who won, and the price to beat. Strike is recorded from the boundary report with row-level provenance; when we cannot establish it honestly, the field is null rather than guessed from a nearby tick.
Three timestamps on every tick
Event time, upstream server time, and our receive time — kept separate, never merged. You can measure the capture path instead of trusting it. Collection runs next to the venues' own infrastructure.
Verbatim, with the gaps shown
Frames are archived as received, out-of-order included. Every file ships row counts and a SHA-256, and the paid dataset carries a machine-readable coverage report so you can exclude affected periods up front.
Pricing
Monthly, cancel anytime. Pro covers the trailing 30 days — enough for recent-regime backtests. Max covers everything we hold.
- Chainlink settlement feed — tick-by-tick, full precision
- TWAP 30s / 60s streams (the current settlement line)
- Full-depth order books, deltas, every trade print
- Per-market outcome + strike (who won, and the price to beat)
- Chainlink BTC/USDT TopOfBook settlement feed
- Order-book snapshots
- Per-market metadata, strike and settlement
- Forward 1s–1d klines
- Everything in both venues
- Cross-venue basis research on a single clock
Need a one-off historical bundle, a single asset, or an invoice? Message us — we also settle in USDT.
How access works
One API key. Files are served straight from object storage, so a large pull is limited by your own bandwidth, not by us.
# list the days your subscription covers
curl -H "Authorization: Bearer $OT_KEY" \
https://outcometick.com/v1/mirror/days
# what is in a given day (optionally filtered)
curl -H "Authorization: Bearer $OT_KEY" \
"https://outcometick.com/v1/mirror/files/2026-08-12?filter=btc-5m"
# get a short-lived download URL for one file
curl -H "Authorization: Bearer $OT_KEY" \
"https://outcometick.com/v1/mirror/download?date=2026-08-12&name=BTCUSD-prices-2026-08-12.csv.gz"
# -> { "url": "https://...", "sha256": "...", "bytes": 1655751 }Every response carries the file's SHA-256, so you can verify what you downloaded is exactly what we published. Full reference in the API docs.