Measuring Bitcoin's Quantum-Exposed Supply
Recent research highlights the quantum risk exposure of Bitcoin's supply, revealing that 30.2% of issued BTC is currently at risk. The study categorizes this exposure into structural and operational types, with operational exposure accounting for the majority. The findings emphasize the importance of wallet hygiene and custody practices in mitigating public-key exposure.
- ▪6.04 million BTC, or 30.2% of the issued supply, is exposed to quantum risk.
- ▪Structural exposure accounts for 1.92 million BTC, while operational exposure totals 4.12 million BTC.
- ▪Exchange-related balances represent 1.63 million BTC, underscoring the role of custody practices.
2 outlets in our directory ran this story, first to last over 32 hours. All of the coverage we found sits in one bucket: centre. That one-sidedness is itself worth noticing.
- ▪ 6.04 million Bitcoin exposed to quantum risk, says Glassnode — Crypto Briefing
Glassnode Insights files mainly under crypto. We currently carry 5 of its stories.
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Story provenance
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Record
| Original publisher | Glassnode Insights |
| Canonical URL | https://insights.glassnode.com/measuring-bitcoins-quantum-exposed-supply/ |
| Publication time | Tue, 19 May 2026 11:57:26 GMT |
| Retrieval time | 2026-05-19T12:04:57.562Z |
| Last seen | 2026-05-19T12:04:57.562Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 9HqgVc8ndAmU · 2 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Product & Research Measuring Bitcoin's Quantum-Exposed Supply We map Bitcoin’s quantum-exposed supply, separating structural and operational sources of public-key exposure across the network. Glassnode, Rafael Schultze-Kraft May 19, 2026 • 7 min read Recent research has brought attention to an emerging Bitcoin security question: which coins are currently exposed to quantum risk at rest? The relevant threshold is whether the public key needed to spend a coin is already visible on-chain. By that measure, 6.04M BTC, or 30.2% of issued supply, is exposed, while the remaining 13.99M BTC, or 69.8%, shows no public-key exposure at rest. These numbers are broadly in line with recently published work [1].We separate this exposure into two categories.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Glassnode Insights.
