Satoshi's ~1.1M BTC, plus millions of other pre-BIP32 coins, sit behind public keys already exposed on chain. A proposed soft-fork would defensively freeze those wallets, shielding them from a future quantum attack.

The fix is a small, BIP-style update — no hard fork needed — that would lock those exposed legacy wallets until Bitcoin's community decides their fate, while newer wallets get quantum-resistant signing by default.

AmericanFortress, founded by Michal 'Mehow' Pospieszalski, a former white-hat hacker who audited U.S. voting machines for the government, has closed an $8M seed (SAVA, Moon Pursuit, 0G Labs) this May; its Send-to-Name wallet is in beta, with an AF token event slated for early Q3, per the company.