According to CoinMeta, based on Glassnode data, approximately 35.4% of Bitcoin (7.12 million coins) are at risk of having their public keys exposed, and these assets could become targets for future quantum computers. Of this, 25.8% of the supply is exposed due to address reuse, and 11.6% of the supply is held on exchanges. Transferring these tokens to new addresses can eliminate such exposure risks.