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Will Bitcoin replace SHA-256 before 2027?
polymarket
opinion

Will Bitcoin replace SHA-256 before 2027?

Total volume:
$7,241,268
Volume 24h:
$7,042,340N/A
Liquidity:
$6,708
3%
Open interest:
$16,073N/A

Will Bitcoin replace SHA-256 before 2027?

all

2 markets

Opinion

Polymarket

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Dec 31, 2026

Will Bitcoin replace SHA-256 before 2027?

5%chance
Amount

$

Trade on
opinion

Trade on Opinion

At 16.1¢ buys you 621 shares | Odds: 5% Total Payout: $621 | Net Profit: $521 Multiplier: 6.21x | ROI: 521% APY not meaningful 65 days to resolution
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
opinion

Will Bitcoin replace SHA-256 before 2027?

Trade
5%
Yes 16.1¢No 95.5¢
11.6¢
N/A
$7,042,340
0%
N/A
N/A
2mo 5d
active
polymarket

Will Bitcoin replace SHA-256 before 2027?

Trade
2%
Yes 2.4¢No 99¢
1.4¢
$6,708
$198,928
0%
0.33%
N/A
2mo 5d
active
PredictionHero
PH Consensus
1.7%
Yes 9.3¢No 97.2¢
Avg: 6.5¢Max: 11.6¢
Total markets: 2

Intro

This market tracks whether Bitcoin will transition away from the SHA-256 hashing algorithm before January 1, 2027. Currently, the consensus probability of Bitcoin replacing SHA-256 before that date is 4.5%. This aggregated view combines data from Polymarket and Opinion, with resolution determined by direct observation of the Bitcoin blockchain alongside credible reporting sources. The market will resolve based on whether SHA-256 remains Bitcoin’s primary cryptographic algorithm by December 31, 2026, 11:59 PM ET, as detailed in the resolution rules; therefore, developments regarding Google’s Willow quantum chip announced in December 2024 will be key to watch.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

Both platforms specify the same binary outcome (YES if SHA-256 is replaced by Dec 31, 2026, 11:59 PM ET; NO otherwise), identical resolution sources (Bitcoin blockchain + credible reporting consensus), and no conflicting thresholds or timing conditions.Primary resolution logic: Bitcoin blockchain (direct observation of active hashing algorithm) combined with consensus of credible reporting sources

Core resolution logic:

  • Market resolves YES if Bitcoin stops using SHA-256 as its primary cryptographic hash function on or before December 31, 2026, 11:59 PM ET
  • Market resolves NO if Bitcoin continues to use SHA-256 through December 31, 2026, 11:59 PM ET
  • Resolution requires verification via the Bitcoin blockchain itself (immutable record of protocol rules) and corroborating credible reporting

Edge cases & clarifications:

  • Partial or gradual transition: If Bitcoin implements a transition period where SHA-256 is phased out but still in active use on Dec 31, 2026, 11:59 PM ET, the market resolves NO. SHA-256 must be completely replaced (no longer in active use) by the deadline.
  • Hard fork adoption uncertainty: If a hard fork proposing SHA-256 replacement exists but lacks consensus or is not activated by the deadline, the market resolves NO. Activation and network consensus are required.
  • Credible reporting conflict: If blockchain evidence and credible reporting conflict, the Bitcoin blockchain state as of Dec 31, 2026, 11:59 PM ET takes precedence as the authoritative source.
Timing: Resolution occurs on January 1, 2027, 12:00 AM ET (immediately after the December 31, 2026, 11:59 PM ET deadline), based on Bitcoin blockchain state at that moment and available credible reporting.Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

On December 9, Google introduced Willow, a breakthrough state-of-the-art quantum chip. This achievement fueled speculation that Bitcoin's encryption may be vulnerable to quantum computers in the not-so-distant future (see https://www.cryptoglobe.com/latest/2024/12/does-googles-new-quantum-chip-willow-threaten-bitcoin-the-crypto-community-responds/). This market will resolve to "Yes" if Bitcoin stops using SHA-256 by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No." The resolution source will be the Bitcoin blockchain, in addition to a consensus of credible reporting.

Opinion

On December 9, Google introduced Willow, a breakthrough state-of-the-art quantum chip. This achievement fueled speculation that Bitcoin's encryption may be vulnerable to quantum computers in the not-so-distant future. This market will resolve to "Yes" if Bitcoin stops using SHA-256 by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No." The resolution source will be the Bitcoin blockchain, in addition to a consensus of credible reporting.

Frequently asked questions

This dashboard tracks the consensus view on whether Bitcoin will replace its current SHA-256 hashing algorithm before 2027, aggregating data from multiple prediction markets. Currently, the combined volume across Polymarket and Opinion is $7,241,268, with $154 traded in the last 24 hours. We monitor these platforms to provide a comprehensive view of expectations, as traders on each venue express their beliefs through market prices. The overall picture from these markets suggests a relatively low probability of a SHA-256 replacement in the near future.

Prediction market odds reflect expectations about future events, in this case, a fundamental change to Bitcoin’s core technology. Unlike spot prices which reflect current value, this market focuses on the probability of a specific technological shift occurring. The current price action suggests traders believe a replacement is unlikely, but the market allows for nuanced views – participants can express varying degrees of conviction. It’s important to remember that prediction markets aren’t about predicting the price of Bitcoin itself, but rather the likelihood of a change to its underlying infrastructure.

Prices on Polymarket and Opinion may differ due to a variety of factors. Polymarket and Opinion can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Each platform has its own user base, trading dynamics, and liquidity, which can influence price discovery. For example, Polymarket currently favors the outcome of no SHA-256 replacement at 1.7%, while Opinion leans toward the same outcome at 4.5%. Differences in trading fees, market maker activity, and even the overall sentiment of each platform’s community can contribute to these discrepancies. These variations are normal and provide a more robust overall signal.

This market resolves around Jan 1, 2027, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will depend on whether a formal, widely adopted change to Bitcoin’s hashing algorithm has occurred before that date. The outcome will be determined by examining official Bitcoin protocol updates and consensus among the Bitcoin development community. This market’s outcome will reflect a clear and demonstrable shift in the technology underlying Bitcoin, as reported by trusted sources.

Several events could significantly impact this market. Major announcements from Bitcoin developers regarding potential hashing algorithm changes would be a key catalyst. Increased discussion and proposals within the Bitcoin community about the limitations of SHA-256, particularly concerning security vulnerabilities or energy consumption, could also shift expectations. Regulatory pressures or technological breakthroughs in alternative hashing algorithms could also play a role. Any credible evidence suggesting a serious move away from SHA-256 would likely cause a substantial change in the price of this market.