Two-Thirds of All Crypto Is Exposed to Quantum Attack | Michal Pospieszalski

Watch on YouTube ↗  |  August 24, 2026 at 14:49  |  27:03  |  The Block
Speakers
Michal Pospieszalski — CEO, AmericanFortress

Summary

Michal Pospieszalski, CEO of AmericanFortress, explains how quantum computing could break ECDSA and steal crypto from exposed public keys, affecting roughly two-thirds of crypto and 100% of Solana. He criticizes migration-based quantum fixes and presents AmericanFortress's zero-knowledge proof of seed provenance as a no-migration solution. The interview also covers privacy/compliance applications, a five-year Q-Day estimate, and the project's late-October TGE and November production launch.

  • Explains how quantum computers could reverse ECDSA public keys and steal exposed crypto funds.
  • Roughly two-thirds of crypto is exposed; Solana is 100% exposed because public keys are on-chain.
  • Migration to post-quantum signatures like Falcon and Dilithium is criticized for potential losses and new algorithm risk.
  • AmericanFortress's zero-knowledge proof of seed provenance aims to provide quantum resistance without migrating addresses.
  • Privacy/compliance use cases include proving clean DeFi funds and public names with private transactions.
  • Q-Day is estimated within the next five years.
  • AmericanFortress plans a token TGE in late October and production release in November.
Ideas
Michal Pospieszalski CEO, AmericanFortress 5:02
Solana fully exposed to quantum attack.
Solana skips hashing public keys into addresses, so public keys are already exposed on chain; a quantum computer could reverse-compute the corresponding child private key and steal funds. The guest says 100% of Solana is affected, making it the most exposed major chain.
SOL HIGH
Michal Pospieszalski CEO, AmericanFortress 7:18
Bitcoin largely exposed once addresses are spent.
Roughly two-thirds of Bitcoin and crypto is exposed to quantum attack because once an address is spent, ECDSA reveals the public key; a quantum computer running Shor's algorithm could derive the child private key and steal the funds. Unspent addresses remain safe until touched, but the guest argues this is not a reliable security model.
BTC HIGH
Michal Pospieszalski CEO, AmericanFortress 24:06
AmericanFortress token launches with quantum fix.
AmericanFortress is commercializing proprietary zero-knowledge proof of seed provenance for quantum resistance without migration plus privacy and compliance tooling. It has 16 patents, major projects peer-reviewing the tech, a token TGE in late October, production releases in November, and plans to deploy across major chains; the token performs security work.
AmericanFortress token MED
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This The Block video, published August 24, 2026, features Michal Pospieszalski discussing SOL, BTC, AmericanFortress token. 3 trade ideas extracted by AI with direction and confidence scoring.

Speakers: Michal Pospieszalski  · Tickers: SOL, BTC, AmericanFortress token