On 26 October, CryptoTimes pointed to a prediction-market contract on Kalshi asking whether bitcoin will touch $78,000 before 31 October, about 2.5% below the $80,000 level bitcoin is hovering around, and described the odds as fluctuating with spot price. The article did not quote a percentage, so there is no number to “believe” yet. What matters for any reader is how to read that number when it appears. This is Field Guide #66: five checks that turn a prediction-market price into something you can reason about, scored on this contract.
Informational only, not investment advice. We do not recommend trading prediction markets or any asset.
What a prediction-market price is, and is not
A binary contract pays a fixed amount, typically $1, if a stated event happens and nothing if it does not. If the Yes side trades at 55 cents, the market is implying roughly a 55% chance, before fees, spreads and any bias in who is trading. It is a crowd’s priced guess, not a measurement. We covered the basics, including Fed-meeting markets, in How to Read Crypto Prediction Markets; this guide goes one level deeper, onto the single feature that most often misleads readers of bitcoin price contracts.
Video: a 15 October 2026 market update from the first test of $80,000 this month, for context only.
Check 1 — Is it a “touch” contract or a “finish” contract?
This is the check that changes the number most. A touch contract (“reach $78,000 at any time before 31 October”) pays if a single wick prints the level. A finish contract (“be below $78,000 at the end of 31 October”) pays only if the price is there at one moment. Because bitcoin trades continuously, touches are far more likely than finishes at the same distance.
We measured the difference on history. Using Yahoo Finance BTC-USD daily data from 26 October 2016 to 25 October 2026, we took every day as a start, measured the next six days (the length of 26–31 October), and counted how often the daily low touched 2.5% below the starting close versus how often the close six days later was 2.5% below it.
| Sample | Start days | Touched −2.5% | Finished −2.5% or lower | Touched −5% | Finished −5% or lower |
|---|---|---|---|---|---|
| Past year | 359 | 217 (60.4%) | 113 (31.5%) | 109 (30.4%) | 55 (15.3%) |
| Past 5 years | 1,820 | 1,101 (60.5%) | 515 (28.3%) | 614 (33.7%) | 304 (16.7%) |
| Since 2016 | 3,646 | 2,244 (61.5%) | 1,053 (28.9%) | 1,402 (38.5%) | 683 (18.7%) |
Source: Bitcoin Mastery calculation on Yahoo Finance daily lows and closes; windows overlap, so observations are not independent.
A touch is roughly twice as likely as a finish at the same distance. If you see “70%” on a touch contract and mentally treat it as “bitcoin will be lower by Friday”, you are reading the wrong market. Score for this contract: the touch structure is reported by CryptoTimes (“touch of $78,000 before October 31”), so we can answer this check — but we have not read the contract rules ourselves.
Check 2 — What does history say about that distance and that window?
Before looking at the market price, form your own base rate. From the 25 October close of $80,053 the strike of $78,000 is 2.6% lower. Our six-day base rate for a −2.5% touch is about 60% in each of the past one, five and ten years; for a −5% touch it is 30–38%. The base rate is a starting point, not the answer: it ignores that bitcoin is already trading near the bottom of a 10% month (our range study), that a Fed decision, PCE and heavy earnings sit inside the window, and that the lowest low of the past 30 days is $79,146, which means the level to beat is not far below.
Score: answerable. The distance (about 2.5%) and the window (about six days) are known. Any market price far above or below roughly 60% needs a reason: a known catalyst, a thin market, or fee and spread effects (Check 3).
Check 3 — Is the price really the probability?
Three frictions separate a quoted price from a clean probability. Spread: the best Yes bid and best Yes ask can be several cents apart, and the “last price” can be stale. Fees: platforms charge on trades and sometimes on settlement; a 60-cent contract that costs 62 cents all-in is implying 62%, not 60%. Bias: small markets can sit away from fair value because of who is trading, especially for outcomes that people fear or hope for. Each of these can move the number by a few points, which matters when the base rate is already near a coin flip.
Score: not answerable from public reporting. CryptoTimes gives no price, volume or order-book depth, so we cannot say what the market implies or whether it is liquid. We would not quote a probability for this contract until we could read it on the platform.
Check 4 — Who decides, and on which price?
Every contract settles against a named source: a specific exchange’s candle, an index, or an average of several venues, measured at a stated time zone and with a stated rule for whether a wick counts. Our own data illustrates why this matters. On Saturday 24 October, Coinbase’s low was $79,107 and Yahoo’s 30-day low is $79,146, a difference of about $39. For a strike $1,100 away that gap is trivial; for a strike a few dollars from the market it decides the outcome. Also check the deadline: “before 31 October” can mean before the day starts or at the end of the day, and the time zone may be Eastern rather than UTC.
Score: not answerable. The contract’s resolution source, time zone and wick rule are in the platform’s rules, which we have not read for this market; CryptoTimes names only the strike and the date.
Check 5 — What is on the calendar inside the window?
A touch probability near 60% means little unless you know whether the window contains scheduled shocks. This one does. The Federal Reserve decides on Wednesday 28 October at 2:00 p.m. ET with Chair Kevin Warsh’s press conference at 2:30 p.m. ET; Microsoft and Alphabet report after the close; September PCE and advance Q3 GDP arrive at 8:30 a.m. ET on Thursday 29 October (CryptoTimes, CMC Markets, investingLive); Amazon, Coinbase and Strategy report after the close that evening. Fed funds futures price a hold at roughly 90% and a December hike at about 85%, so the surprise risk is more in the language and the PCE print than in the rate itself. Our guides on reading the PCE report and bitcoin on Fed decision days cover the details.
Score: answerable, and it argues for caution in both directions. A catalyst-heavy window raises the chance of a wick through $78,000 and also of a rally that makes it irrelevant.
The scorecard
| Check | Can we answer it from public information? | What we found |
|---|---|---|
| 1. Touch or finish? | Yes (as reported) | Touch contract; roughly 2x as likely as a finish |
| 2. Base rate | Yes | About 60% to touch −2.5% in six days; 30–38% for −5% |
| 3. Price vs probability | No | No price, volume or spread published |
| 4. Resolution rules | No | Source, time zone and wick rule not read |
| 5. Calendar | Yes | Fed, Big Tech, PCE and GDP inside the window |
Three of five checks can be answered from public information. That is why this guide ends without a probability: the sensible output is a base rate of about 60% for a touch at this distance, plus a list of things you would need to see before trusting any quoted price.
A short worked example
Suppose, hypothetically, you later see the Yes side quoted at 71 cents with a 4-cent spread. First, confirm it is a touch contract (Check 1). Second, compare to the 60% base rate (Check 2): the market is 11 points above it. Third, ask what could justify that premium (Check 5: the Fed, PCE, an already-weak tape) and whether the quote is liquid enough to trust (Check 3). If the best ask is 73 cents, the price you would actually pay implies 73%. Finally, read the rules (Check 4) before treating a $78,001 wick on one venue as the same thing as a $78,001 print on the settlement source. The hypothetical numbers are for illustration only and are not a market quote.
Chart: bitcoin over one month, TradingView widget (live data).
Limits of this guide
- The base rates use Yahoo daily lows and closes in UTC; an exchange’s intraday low can differ slightly.
- Overlapping six-day windows mean the effective sample is smaller than the day count.
- We have not seen the Kalshi contract page; every statement about it comes from CryptoTimes (26 October 2026).
- Past frequencies in a different market structure may not describe the next six days.
Disclaimer: This article is for informational purposes only and does not constitute investment advice. Bitcoin and other cryptocurrencies are volatile and you can lose some or all of the money you put in. Nothing here is a recommendation to buy, sell or hold bitcoin, any exchange-traded fund, any listed security or any other asset, and the technical levels, probabilities and scenarios discussed are descriptions of published data, not forecasts. Do your own research and consult a licensed financial advisor before making investment decisions.