StreetSpread · Crypto · Polymarket

Bitcoin quantum-resistant upgrade implemented in 2026?

Crypto Resolves December 31, 2026 Polymarket

Polymarket is pricing this contract at 10¢ (10% implied probability). Resolves December 31, 2026. This market will resolve to “Yes” if, by December 31, 2026, 11:59 PM ET, a quantum-resistant protocol upgrade is activated on the Bitcoin mainnet.

Live price

PlatformCentsImpliedVolume
Polymarket10¢10%$2K

Resolution criteria

This market will resolve to “Yes” if, by December 31, 2026, 11:59 PM ET, a quantum-resistant protocol upgrade is activated on the Bitcoin mainnet. Otherwise, this market will resolve to “No.” To qualify, the upgrade must satisfy all of the following: - The upgrade must constitute a consensus-layer change to the Bitcoin protocol that is live and enforced on the Bitcoin mainnet by the deadline. Proposals, drafts, code releases, miner signaling, node adoption, or activation on testnets or alternative networks do not qualify on their own. - The upgrade must enable the use of a post-quantum-secure signature scheme for standard Bitcoin transactions on the Bitcoin mainnet. The scheme must be intended to provide meaningful resistance against quantum attacks on transaction signing (e.g., attacks against ECDSA or successor schemes). Purely theoretical proposals, wallet-level changes, off-chain solutions, layer-2 systems, or other non-consensus-layer mitigations do not qualify. - The upgrade must make such quantum-resistant transaction types valid under Bitcoin consensus rules and generally available for use on the Bitcoin mainnet, even if their use is optional or not yet widely adopted. “A

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