Grayscale’s head of research, Zach Pandl, argues that Bitcoin’s (BTC) quantum challenges are “more social than technical,” with a key hurdle being community consensus. In a recent blog post, Pandl noted that Bitcoin has lower engineering risk than other cryptocurrencies. It uses a UTXO model, proof-of-work consensus, no native smart contracts, and certain address types aren’t quantum vulnerable if not reused after spending. Bitcoin’s Lost Coins Could Become Its Biggest Quantum Headache The core problem centers on Bitcoins, where the private key has been lost or is otherwise inaccessible