According to CoinMeta, data from Glassnode shows that more than one-third of Bitcoin coins (approximately 7.12 million, worth over $500 billion) are exposed to future quantum computers. Most Bitcoin addresses disclose their public keys when they are first used for sending transactions, and any coins that remain in those addresses or are subsequently sent to them are considered exposed. Glassnode states that "transferring these coins to new addresses can end this exposure."