Bitcoin Edge

What Is the Bitcoin Edge Tool?

Kalshi's KXBTCD market settles a new bitcoin contract at the top of every hour on a public CF Benchmarks bitcoin reference index. IBIT options on the same underlying settle through a different microstructure with the same outcome. The Bitcoin Edge tool extracts the probability the IBIT options book is implying, compares it to the Kalshi YES contract price on every active strike, and flags the gaps.

The free tier shows the headline — spot, hours to close, and the direction of the current top edge. The Pro grid below shows every strike with the signed edge in percentage points, the rationale, and direct trade links to Kalshi (with referral) and Robinhood (for the IBIT options hedge).

Version 2.1 — Momentum, Shrunk and Checked

The model carries a short-horizon momentum term, and it is deliberately small. An earlier version leaned on it much harder: for a week it claimed an average probability near 79% on contracts the market was pricing near 50, and those signals resolved at 48%. The market was right and the model was not. In August 2026 we cut the momentum influence by roughly 60%, capped how far it can move any single estimate, and reset the published track record so this version is measured only on its own results.

The tool also scores itself against its own settled record every week, fitting a correction curve from what it claimed against what actually happened. That correction only takes over the published numbers once it beats both the uncorrected model and the market's own accuracy on signals it has never seen. Until it clears that bar it runs in the background, and the tool holds its own confidence tier down rather than advertising conviction it has not earned.

How to Use It

Start with the HIGH confidence rows — those passed all four liquidity guards (edge, distance from spot, spread, volume). Cross-check the rationale for any caveat. Click through to Kalshi to verify the live market before sizing. Then optionally enter the matching IBIT option on Robinhood as a directional hedge.

Why IBIT Options and Kalshi Disagree on Bitcoin

Bitcoin is the rare commodity-style market where two different US venues quote the same outcome with materially different microstructures. Kalshi's KXBTCD hourly flow is dominated by retail directional traders sizing in 1–10 contract clips. IBIT options are priced by professional market makers running risk-neutral hedging books with deep institutional flow. Two different markets, two different price discovery channels, one underlying asset.

When retail flow leaves a Kalshi strike at 25¢ and the IBIT options book is implying 45% on the same outcome, the gross gap is 20pp. Round-trip trading cost on Kalshi (bid-ask + fees) is typically 5pp on liquid bitcoin contracts, leaving roughly +15pp of expected-value edge after slippage. That is not noise — it is two markets on the same asset that have not agreed on the same number yet.

The Edge in pp

The Bitcoin Edge tool reports gaps in percentage points (pp). A +20pp edge on a BUY YES means the options book is pricing the YES outcome 20 percentage points higher than the Kalshi YES contract. The Kalshi contract pays out $1 if the event happens — pricing it below the options-implied probability is a direct expected-value edge.

Confidence tiers gate the rows by liquidity, not just edge size. A 40pp edge on a strike with zero 24h volume is not actionable. We require ≥100 contracts of recent volume, a tight bid-ask, and a strike within ±5% of spot for the HIGH tier. Outside those guards, the rationale field flags the specific reason the row dropped to MEDIUM or LOW.

Under the hood: the formula

The Hedge

The Robinhood link on each row goes to the IBIT option position that mirrors the Kalshi contract. Entering both legs neutralizes most of the directional risk and turns the trade into a pure mispricing capture. Sizing is 2% of trading account per Kalshi leg, 5% combined across correlated strikes — the methodology block below has the exact thresholds and caveats.

Kalshi Bitcoin Markets by Frequency

Kalshi runs bitcoin contracts at six cadences — 15-minute, hourly, daily, weekly, monthly, and yearly — all settled on the same CF Benchmarks Real-Time Index. This tool prices the hourly rung, where an options-implied probability gives an independent second opinion; daily/weekly/monthly coverage is in progress. The full breakdown:

• Kalshi Bitcoin Markets by Frequency: which rung to trade
• Kalshi Bitcoin 15-Minute Markets (KXBTC15M): how they settle
• How Kalshi Settles Bitcoin: the reference rate and edge cases

What Is the CF Benchmarks BRTI, and How Does Kalshi Settle on It?

The CME CF Bitcoin Real Time Index (BRTI) is CF Benchmarks' real-time bitcoin price. CF Benchmarks describes it as a benchmark price published once every 200 milliseconds, aggregated from order data on the Bitcoin-USD markets of the exchanges that meet its CME CF Constituent Exchange Criteria, and registered as a benchmark under UK BMR. It names the BRTI as the settlement input for the event contracts Kalshi lists.

Kalshi's hourly KXBTCD contract does not settle on a single print. It settles on the average of the BRTI over the 60 seconds before the hour, as stated in the series' settlement sources, so one late tick cannot decide a strike on its own. The 15-minute contract uses the same index; the KXBTC15M guide walks through its window. Source: CF Benchmarks, BRTI index page (methodology documents linked there), read October 10, 2026.