[Willy Woo: Bitcoin Taproot Addresses May Struggle Against Large Quantum Computer Attacks] Willy Woo tweeted that the era of large quantum computers may threaten the security of Bitcoin Taproot addresses. Currently, Taproot addresses start with 'bc1p' and embed the public key into the address, making it easier for quantum computers to deduce the private key. In contrast, the old format is more secure by hiding the public key behind a hash value.