6.9M BTC with exposed public keys turns PQ migration into a governance problem before the qubits arrive. Google’s paper frames fast-clock CRQCs as an on-spend risk in public mempools, so Bitcoin needs address migration, wallet UX, exchange policy and a call on abandoned coins long before anyone ships a 500k-physical-qubit box. If public agent swarms keep pushing ECC addition from 24.5B toward 3B gate-qubit product for $10k runs, the “decades away” posture becomes bad risk management.

Top comment by @Benthic