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Crypto reference rates and settlement index windows

Crypto trades around the clock on dozens of exchanges, and the price of bitcoin can differ from one venue to another by a small amount at any moment. Event contracts asking whether bitcoin will be above a price at a set time therefore need a precise rule for which number counts. This SoftCta guide explains the main approaches and what to check.

Why a single price is not enough

There is no official closing price for crypto. Exchanges quote different prices in different currencies, such as US dollars or the USDT stablecoin, and brief spikes on thin books can print prices that most traders never saw. A settlement source has to define the asset, the pair, the venue or venues and the exact moment or window.

Multi-exchange reference rates

Many regulated contracts use benchmark indexes that combine trades or order books from several large exchanges under a published methodology. Benchmark administrators such as CF Benchmarks calculate real-time indexes and daily reference rates for bitcoin and ether. Contracts may settle on the average of an index over a short window, for example the 60 seconds before expiry. Averaging makes it harder for a single large order to move settlement and smooths out momentary spikes.

Single-exchange candles

Other markets settle on one exchange's data, such as the closing price of a one-minute or one-hour candle for a named trading pair. This is simple to verify, but it inherits that venue's quirks, including its own outages and occasional wicks. A BTC/USDT candle and a BTC/USD index can differ, especially if the stablecoin trades slightly away from one dollar.

Oracle feeds

On-chain markets may use price oracles that publish aggregated prices to a blockchain at intervals or when prices move by a set amount. The update rule matters: the price recorded at expiry may be the last update before the deadline, not a fresh reading. Our oracle resolution guide explains how disputes work when a source looks wrong.

Close, touch and windows

A contract on the price "at" a time settles on the named reading. A contract on whether the price "reaches" a level at any time during a period settles on the high or low in the source data. Our touch versus close guide explains the difference, and our bitcoin bracket guide covers bracket layouts.

Outages and fallbacks

Exchanges and data feeds sometimes fail during the busiest moments. Rules usually name a fallback, such as a different index or the next available reading. Our guide to reading resolution source documents shows where to find these clauses.

Wording checks

• Source: index name, exchange and trading pair.
• Window: single print, last candle close or an average over seconds or minutes.
• Time: exact timestamp and time zone; see our time zone guide.
• Fallback: what happens if the source is unavailable.

A reading habit

Open the named source, not just a generic chart, before reacting to a quote near expiry. The price chart tool is for orientation only; verify live prices and rules on the venue.

Primary sources SoftCta readers open

• Venue contract rules naming the settlement source
• Benchmark administrator methodology documents
• Exchange historical candle data for named pairs
• Oracle provider documentation for on-chain feeds

Reading the quote step by step

• Read the full title and rules, including the named settlement source and the time zone.
• Convert the Yes and No prices to implied probabilities and note the gap between them.
• Subtract fees and spread to see the effective price you would actually face.
• Write your own probability range and the evidence behind it, then compare.
• Check related and near-duplicate markets on other venues for consistency.

Closing SoftCta checklist

• Re-read the venue definition in your own words before reacting to a price.
• Convert prices with fee and spread awareness; verify live cents on the operator.
• Prefer primary settlement sources over secondary headlines and social summaries.
• Treat ChanceWire hubs, movers, and tools as orientation — not order entry.
• Confirm age, location, and product eligibility; SoftCta pages will not suggest location spoofing.
• If clarity is incomplete, watching is a complete SoftCta outcome — no pick-selling urgency required.

SoftCta habits

• Write your own probability range before checking the crowd price.
• Prefer dated primary sources over social summaries.
• Compare related markets when a single book looks extreme.
• Size curiosity with fees and depth in mind; substantial risk of loss.