Bitcoin replacing SHA-256 before 2027 stays near zero

Name: Bitcoin replacing SHA-256 before 2027 stays near zero
Creator: ClearMarket
Published: 2026-08-27T00:00:00.000Z
License: https://creativecommons.org/licenses/by/4.0/

Polymarket 2%

record: CMSIG2026082707 | category: momentum-repricing | target: CM-EVT-WPFDMLLJ82 | published: 2026-08-27

4-bullet brief | narrative

Polymarket puts just 2% odds on Bitcoin replacing its SHA-256 algorithm before 2027, resolved via UMA oracle.
The successful quantum-resistant mainnet test is a technical milestone, but the market treats full protocol replacement within roughly 16 months as a near-impossibility.
The 7 million exposed BTC and the non-standard, high-cost nature of the quantum-safe solution cited in reporting are consistent with the market's extreme skepticism about near-term migration.
Resolution requires an actual consensus-level protocol change, not a single transaction test, a governance and network coordination barrier that keeps the 2% price anchored low.

atomic briefs | structured for retrieval

[01] news_event

significance

surfaced in the daily Exa news-cycle scan; mechanically matched to an active polymarket market

story: StarkWare successfully tested a quantum-resistant Bitcoin transaction on mainnet, with about 7 million BTC still potentially exposed due to visible public keys.exa_search → Oluwapelumi Adejumo · as_of 2026-08-28T19:51:53+00:00
publisher: Oluwapelumi Adejumo
published_at: 2026-08-27T00:00:00.000Z
source_url: https://cryptoslate.com/bitcoin-now-has-a-quantum-computing-escape-route-but-7-million-btc-may-still-be-exposed/

[02] pm_response

interp: Polymarket at 2% treats SHA-256 replacement before 2027 as a tail risk despite the quantum-resistance proof-of-concept, reflecting the gap between a test and a protocol standard.llm_judge_cm_signal_v1

evaluation

News-cycle wires publish on coverage, not editorial selection — the day’s top stories matched to the prediction markets pricing them, so nothing is cherry-picked.

judge_engine: none — deterministic news-cycle scan
judge_verdict: auto_published
judge_confidence: n/a — no judge gate (deterministic publishing)
prompt_template: news_cycle_v1 github · auditable
match_method: entity_slug_match (mechanical)

citation graph

Every wire traces back to the ClearMarket event it is built on, and out to each venue’s own market page — so any figure here can be verified at its source.

internal

cm_event: /events/will-bitcoin-replace-sha-256-before-2027/

external

venue_a: polymarket · 0xf3233a75da0de4e80c3de26ca3ff74c3c69a7d77f137bf5ff425224574c1db94

programmatic access · four surfaces, same payload

AI grounded search reads embedded JSON-LD in HTML. Developers query REST. Agentic AI clients (Claude Desktop, Cursor) call MCP tools. AI crawlers index via /llms.txt. Same canonical record at every surface.

HTML	browsers, AI grounded search, crawlers (contains embedded JSON-LD `@type: Dataset`)	`https://clearmarket.fyi/signals/bitcoin-replaces-sha-256-before-2027-polymarket-2-2026-08-27/`
JSON	REST API for developers	`https://clearmarket.fyi/signals/bitcoin-replaces-sha-256-before-2027-polymarket-2-2026-08-27.json`
MCP	agentic AI tool call (Claude Desktop, Cursor, Continue)	`clearmarket.get_signal("bitcoin-replaces-sha-256-before-2027-polymarket-2-2026-08-27")`
AGENT	AI crawler discovery index	`/llms.txt`

 PM data: platform APIs (hourly refresh). News context: retrieved with source citations. Editorial judgment: LLM judge with prompt template versioned per wire type. Per-claim provenance inline above; full per-field provenance map at the JSON endpoint under field_provenance.
  raw JSON record · same payload returned by REST endpoint
 {
  "$schema": "https://clearmarket.fyi/schema/signal/v1.json",
  "provenance_version": "0.2.0",
  "record_id": "CMSIG2026082707",
  "published_at": "2026-08-27T00:00:00.000Z",
  "detection": "news_cycle",
  "category_tag": "MOMENTUM_REPRICING",
  "secondary_tags": [],
  "pre_news_classification": "concurrent",
  "target_event_id": "CM-EVT-WPFDMLLJ82",
  "target_event_slug": "will-bitcoin-replace-sha-256-before-2027",
  "event_question": "Will Bitcoin replace SHA-256 before 2027?",
  "bullets": [
    "Polymarket puts just 2% odds on Bitcoin replacing its SHA-256 algorithm before 2027, resolved via UMA oracle.",
    "The successful quantum-resistant mainnet test is a technical milestone, but the market treats full protocol replacement within roughly 16 months as a near-impossibility.",
    "The 7 million exposed BTC and the non-standard, high-cost nature of the quantum-safe solution cited in reporting are consistent with the market's extreme skepticism about near-term migration.",
    "Resolution requires an actual consensus-level protocol change, not a single transaction test, a governance and network coordination barrier that keeps the 2% price anchored low."
  ],
  "atomic_claims": [
    {
      "type": "news_event",
      "field_provenance": {
        "story": {
          "tier": "mediated",
          "method": "exa_search",
          "source": "Oluwapelumi Adejumo",
          "source_url": "https://cryptoslate.com/bitcoin-now-has-a-quantum-computing-escape-route-but-7-million-btc-may-still-be-exposed/",
          "retrieved_at": "2026-08-28T19:51:53+00:00"
        }
      },
      "significance": {
        "threshold": 5,
        "threshold_unit": "rank",
        "passed": true,
        "reason": "surfaced in the daily Exa news-cycle scan; mechanically matched to an active polymarket market"
      },
      "story": "StarkWare successfully tested a quantum-resistant Bitcoin transaction on mainnet, with about 7 million BTC still potentially exposed due to visible public keys.",
      "publisher": "Oluwapelumi Adejumo",
      "published_at": "2026-08-27T00:00:00.000Z",
      "source_url": "https://cryptoslate.com/bitcoin-now-has-a-quantum-computing-escape-route-but-7-million-btc-may-still-be-exposed/"
    },
    {
      "type": "pm_response",
      "field_provenance": {
        "notes": {
          "tier": "editorial",
          "method": "llm_judge_cm_signal_v1"
        }
      },
      "notes": "Polymarket at 2% treats SHA-256 replacement before 2027 as a tail risk despite the quantum-resistance proof-of-concept, reflecting the gap between a test and a protocol standard."
    }
  ],
  "evaluation": {
    "judge_engine": "none — deterministic news-cycle scan",
    "judge_verdict": "auto_published",
    "judge_confidence": null,
    "prompt_template": "news_cycle_v1"
  },
  "citations": {
    "internal": {
      "cm_event": "/events/will-bitcoin-replace-sha-256-before-2027/",
      "related": []
    },
    "external": {
      "venue_a": null,
      "venue_b": null,
      "benchmark": null
    }
  },
  "sources": [
    {
      "label": "Oluwapelumi Adejumo: How Bitcoin just proved it could survive a quantum attack",
      "url": "https://cryptoslate.com/bitcoin-now-has-a-quantum-computing-escape-route-but-7-million-btc-may-still-be-exposed/",
      "published_at": "2026-08-27T00:00:00.000Z",
      "retrieved_at": "2026-08-28T19:51:53+00:00"
    }
  ],
  "field_provenance": {
    "pm_data": "polymarket_api",
    "news_context": "exa_search",
    "editorial_judgment": "cm_signal_llm_judge"
  }
}
 
   PROVENANCE PROTOCOL v0.2 · [direct] venue api · [mediated] grounded web fetch + source url · [derived] computed from listed inputs · [editorial] versioned llm judgment · full spec /schema/provenance/v1

record CMSIG2026082707 published 2026-08-27T00:00:00.000Z signature sha256-63886cecc02… ← underlying event all signals →