Quantum computing is moving faster than expected, and crypto isn’t keeping up.

This is according to new TechGaged.com research, based on qLABS data, which shows a clear divide in readiness – with Bitcoin ranking as the most vulnerable blockchain and Cardano emerging as the safest.

The findings come from the qLABS Quantum Vulnerability Index (qLVI), which ranks the 10 largest Layer-1 blockchains based on their exposure to quantum risks, including market-value-at-risk, historical-data exposure, and preparedness.

The top 10 blockchains, ranked by quantum vulnerability, are:

Top 10 Blockchains by Quantum Vulnerability are:

  • Bitcoin — 8.33
  • Hyperliquid — 7.90
  • BNB Chain — 7.87
  • Dogecoin — 7.77
  • Monero — 7.37
  • TRON — 6.83
  • Ethereum — 6.80
  • XRP Ledger — 6.30
  • Solana — 6.00
  • Cardano — 5.60

The Quantum Vulnerability Index (qLVI) scores each blockchain from 0 to 10, showing how exposure and preparedness translate into real-world risk, and the results are striking.

Four of the 10 blockchains have no quantum roadmap at all, and the other two only acknowledge the risk without a clear plan, leaving most of the market still unprepared.