Glassnode Says 31.2% of Bitcoin Supply Has Exposed Public Keys, Creating Potential Quantum-Attack Risk

Glassnode reports 31.2% of Bitcoin's supply (6.26M BTC) is in addresses with exposed public keys, up from 24.8% in 2021. This could pose a quantum-attack risk. Address reuse and certain transaction structures contribute to the exposure, with 57% of exchange-held Bitcoin affected.

Original reporting
Published Oct 9, 2026, 4:38 AM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 9, 2026, 5:50 AM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
Glassnode Says 31.2% of Bitcoin Supply Has Exposed Public Keys, Creating Potential Quantum-Attack Risk — source image
Decision brief

The 30-second read

$BTC-USDBearishLow
01

Why it matters

The disclosed exposure could influence risk assessments and pricing models for Bitcoin and related assets.

02

Market read

First‑time disclosure of large‑scale public‑key exposure adds a new risk factor to Bitcoin valuation.

03

What to watch

Potential mitigation via upcoming cryptographic upgrades (e.g., Taproot) could offset risk.

Relevance 8/10Novelty 8/10Timing: today

Background

Glassnode, a blockchain analytics firm, released a fresh analysis of Bitcoin address exposure, quantifying the share of supply with visible public keys.

Company-level read

Ticker impact

$BTC-USDBearishMedium confidence
Context

Glassnode reports 31.2% of Bitcoin's circulating supply is held in addresses with exposed public keys, creating a quantum‑attack risk.

Expected impact

likely downward pressure as market prices in quantum‑risk concerns

Evidence & confidence

The new data highlights a sizable exposure; while quantum computers are not yet practical, the risk perception may trigger sell‑offs.

Market effects

May raise scrutiny of other crypto assets that rely on similar cryptography.

Global, as Bitcoin is traded worldwide.

High, given Bitcoin's market cap and influence on broader crypto markets.

Counterpoint

Quantum risk is speculative; price impact may be limited until practical quantum computers emerge.

Key entities

  • Glassnode

    Provider of blockchain data and insights.

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