Bitcoin Up or Down - October 19, 7:15PM-7:30PM ET
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Bitcoin Up or Down - October 19, 7:15PM-7:30PM ET
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AI Analysis
Trader mode: Market mechanics, assumptions and risks
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Reported volume · provider units
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Saved contracts
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Reviewed equivalent pairs
Source snapshot: Oct 19, 2026, 3:00 AM UTC
About This Event
This market will resolve to "Up" if the time-weighted average price (TWAP) of Bitcoin, generated by Chainlink, of the time range specified in the title is greater than or equal to the price at the beginning of that range. Otherwise, it will resolve to "Down". The resolution source for this market is information from Chainlink, specifically the BTC/USD TWAP data stream available at https://data.chain.link/streams/btc-usd-twap-60s-streams. Please note that this market is about the price according to the TWAP Chainlink data stream for the asset pair BTC/USD, not according to any other sources or spot markets.
Snapshot observed 2026-10-19T00:00:05.826Z. This analysis describes that snapshot and is not a live news update.
What the contract measures
This is a single-market snapshot from Polymarket for "Bitcoin Up or Down - October 19, 7:15PM-7:30PM ET" [1]. The contract resolves to "Up" if "the time-weighted average price (TWAP) of Bitcoin, generated by Chainlink, of the time range specified in the title is greater than or equal to the price at the beginning of that range" [1]. Otherwise it resolves to "Down" [1].
The resolution source is the Chainlink BTC/USD TWAP data stream [1]. The source states that the market "is about the price according to the TWAP Chainlink data stream for the asset pair BTC/USD, not according to any other sources or spot markets" [1]. Readers comparing this with other Bitcoin contracts should check whether they use the same data stream, time window, and comparison rule, since wording differences can change what a contract settles on.
The listed end time is 2026-10-19T23:30:00.000Z [1]. The title uses Eastern Time, so readers should compare the listed UTC end time with the ET window in the title rather than assume they match.
Reading the snapshot
The saved market shows Up at 0.505 and Down at 0.495 [1]. These are snapshot prices, not executable quotes, and they are not verified probabilities. The evidence does not show order book depth, spreads, or trade sizes.
The sample covers one market from one provider event. The coverage record shows one total market, one included, and no partial sample [1]. Because this is the only outcome pair in the saved event, there is no other contract in this sample to compare against.
The observation time was 2026-10-19T00:00:05.826Z, and the retrieval time was 2026-10-19T01:18:48.861Z [1]. These values describe when the data was saved, not the price right now. The status recorded at retrieval was active [1].
What remains uncertain
The evidence does not include the price of Bitcoin at the start of the window, the TWAP during the window, or the final outcome. It also does not explain why the quoted prices sit near even odds, and it provides no information on trading volume, liquidity, or how many participants hold each side. Volume should not be read as liquidity or as a count of traders.
Any price difference between this contract and a similar contract on another platform or with different wording should not be treated as an arbitrage opportunity without checking the rules, data sources, and close times for each one.
References
- Polymarket: Bitcoin Up or Down - October 19, 7:15PM-7:30PM ET. Provider data observed 2026-10-19T00:00:05.826Z.
AI-generated analysis based on market data. Not financial advice.
Saved Oct 19, 2026 UTCOverview
This is a short-term binary contract on the Bitcoin price, listed on Polymarket under the title "Bitcoin Up or Down - October 19, 7:15PM-7:30PM ET" [1]. The contract's rules state that it will resolve to "Up" if the time-weighted average price (TWAP) of Bitcoin over the time range in the title is greater than or equal to the price at the beginning of that range. Otherwise, it resolves to "Down" [1]. The measurement source is specified in the rules. The resolution source is Chainlink's BTC/USD TWAP data stream, and the rules say the market concerns the price according to that Chainlink stream, not other sources or spot markets [1]. This matters because a contract can settle differently from a price shown on an exchange or aggregator if the rules name a different data stream. The event's provider record lists a status of active and an end time of 2026-10-19T23:30:00.000Z [1]. That end time is the listed time in the contract information. It is not evidence that the contract has closed or resolved, and the status shown here reflects the provider record at the time it was retrieved.
Why It Matters
The contract measures whether the average Bitcoin price over a specific 15-minute window, as defined by the Chainlink BTC/USD TWAP stream, finishes at or above the price at the start of that window [1]. Because the comparison is between an average over the window and the starting price, the outcome is not simply whether the price at the end is higher than at the start. The contract is therefore narrowly defined by its data source and time range, which determines how it should be read.
Snapshot context
The latest published provider snapshot for this topic was observed on 2026-10-19 at 00:00 UTC. It contains listings from Polymarket. Market descriptions and listed closing times define the contracts; they do not establish that the real-world outcome has occurred. This article does not include a separately verified news update. [1]
Frequently Asked Questions
What determines whether the contract resolves Up or Down?
It resolves to "Up" if the Chainlink BTC/USD TWAP over the time range in the title is greater than or equal to the price at the beginning of that range, and to "Down" otherwise [1].
Which price data does the contract use?
The rules specify Chainlink's BTC/USD TWAP data stream and state that prices from other sources or spot markets are not used for this market [1].
AI-written background. References identify the evidence used; Wikipedia links under Learn More are additional reading. Prices and provider rules are dated snapshots. This is not financial advice.
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Prices are catalog snapshots and may have changed. Check each market's rules and observation time.
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Price gaps of 2 pp+
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Reviewed equivalent pairs
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No currently reviewed equivalent pairs with both binary Yes prices are available.
Price differences do not establish arbitrage. Check each pair's review, current order prices, fees and settlement rules.