XRP 15-minute desk

The panel reads the same four numbers on every coin desk: the target Kalshi set when the window opened, the live Coinbase price and its gap from that target, the Up and Down prices in cents, and what a stake pays if you are right or costs if you are wrong. The mechanics are written up once, on the crypto markets hub, and the fee arithmetic lives in Lesson 03. What follows is only what is different about XRP.

The facts behind this desk

• Series KXXRP15M, a fresh window on every quarter hour.
• Settles on CF Benchmarks’ XRPUSDRTI real-time index, the index named in the XRP market object we hold.
• Target precision four decimals: the market declares round_digits: "4", and the snapshot we hold carried a target of $1.4264.

Read from Kalshi’s public API. The most recent XRP market object we hold closed on 2026-09-09 at 15:00 UTC; the series was confirmed open again on 2026-09-19. Full details and dates on the XRP hub.

Why the fourth decimal matters here

Bitcoin targets are quoted to the cent on a price in the tens of thousands, so the last digit is noise. An XRP target like $1.4264 is quoted to a hundredth of a cent on a price near a dollar and a half, so the last digit is the whole contest. One tenth of a percent of that target is about $0.0014, which is why the gauge under the live price is scaled in ten-thousandths on this desk and why the gap line prints four decimals instead of two. The desk reads that decimal count off each market as it opens rather than assuming it, so if Kalshi ever publishes a five-decimal XRP target, the panel prints five.

The chart axis draws Coinbase XRP-USD at four decimals too, and the dotted “To beat” line carries the exact Kalshi figure in its label. Judge the distance in percent, not in dollars: a gap of $0.0030 is roughly 0.2% on XRP, the kind of move a quarter hour can produce in either direction, and it looks like nothing next to a bitcoin gap of $30.

What we have measured, with the date

One XRP window in the snapshot we hold, the one that closed at 15:00 UTC on 2026-09-09, showed volume_fp 8,653.93 contracts and open_interest_fp 3,099.81. That is a single window on a single day, not an average and not a claim about depth today. We publish the field name and the date with every figure like this so you can tell a measurement from a guess, and we re-read it before we describe the market as anything other than what that one number says.

There is no XRP hourly desk. Kalshi’s series listing carries hourly-shaped XRP series, but we have not watched one trade, so this page stays on the quarter-hour contract and links to nothing we cannot verify.