When will quantum computers break Bitcoin?

The window is 2029-2033. IBM ships Starling in 2029 (~200 logical qubits) and Blue Jay in 2033 (over 2,000 logical qubits on roughly 100,000 physical). Google Quantum AI, working with the Ethereum Foundation and Stanford, showed in March 2026 that breaking 256-bit ECDSA needs only 1,200-1,450 logical qubits - inside 500,000 physical - and finishes in minutes. Blue Jay clears that bar.

How many cryptocurrencies are quantum vulnerable?

Over 99% of cryptocurrencies by market capitalization use quantum-vulnerable signature schemes (ECDSA or EdDSA). This includes Bitcoin, Ethereum, and all major altcoins.

What percentage of Bitcoin addresses have exposed public keys?

Glassnode measured 6.04 million BTC - 30.2% of circulating supply, roughly $469 billion - sitting in addresses with exposed public keys as of May 2026. That splits into 1.92M structurally exposed in P2PK outputs and 4.12M operationally exposed through address reuse.

Quantum Computing & Cryptocurrency Statistics 2026

📅 Last Updated: August 24, 2026 | 📊 Total Statistics: 63 | 📝 License: CC BY 4.0 (Free to use with attribution)

📚 How to Cite This Data

All statistics on this page are free to use with attribution. Please cite as:

Source: SynergyX, "Quantum Computing & Cryptocurrency Statistics 2026" https://synxcrypto.com/quantum-cryptocurrency-statistics-2026.php

🖥️

Quantum Computing Progress

~2,500

Physical qubits in the best public quantum hardware today - none fault-tolerant at scale

Source: Public vendor disclosures 2026

1,121

Qubits in IBM's Condor processor (December 2023)

Source: IBM 2023

100,000+

Physical qubit target for IBM Blue Jay in 2033 - over 2,000 logical qubits

Source: IBM Quantum Roadmap 2033

$15 billion

China's quantum computing investment (2021-2025)

Source: Various estimates 2025

$1.2 billion

US National Quantum Initiative funding

Source: US Government 2023

1,200-1,450

Logical qubits needed to break 256-bit ECDSA - the current benchmark, down from earlier estimates near 2,330

Source: Google Quantum AI, Ethereum Foundation & Stanford, March 2026 2026

<500,000

Physical qubits the same ECDSA-256 break fits inside

Source: Google Quantum AI, March 2026 2026

~26,000

Physical qubits for the same break on neutral-atom hardware over roughly 10 days

Source: Caltech/Oratomic analysis 2026

Active qubits in Google Sycamore (54 fabricated) for the 2019 supremacy demonstration

Source: Google/Nature 2019

200 seconds

Time for Google Sycamore to complete quantum supremacy calculation

Source: Google/Nature 2019

10,000 years

Classical time Google claimed for the same calculation - IBM disputed it at roughly 2.5 days

Source: Google/Nature; IBM rebuttal 2019

105

Qubits in Google Willow, the first chip to show below-threshold error correction (December 2024)

Source: Google Quantum AI 2024

<5 minutes

Willow benchmark runtime against roughly 10^25 classical years

Source: Google Quantum AI 2024

<1 million

Noisy qubits to factor RSA-2048 in under a week - down from 20 million qubits in 2019

Source: Gidney, May 2025 2025

50+

Countries with active quantum computing programs

Source: Various 2024

Minutes

Time for a CRQC to derive a Bitcoin private key from an exposed public key

Source: Google Quantum AI, March 2026 2026

🔓

Cryptocurrency Quantum Vulnerability

99%+

Cryptocurrencies using quantum-vulnerable signatures (ECDSA/EdDSA)

Source: SynergyX 2026

$2.5+ trillion

Total crypto market cap vulnerable to quantum attacks

Source: CoinMarketCap + Analysis 2026

6.04 million BTC

Bitcoin sitting in addresses with exposed public keys