QDayClock, a project focused on defending Bitcoin against the potential threat posed by quantum computing, has raised $6 million to develop quantum-proof tools aimed at securing the cryptocurrency's cryptography. This fundraising effort highlights growing concerns within the crypto community about the future security of Bitcoin as advances in quantum computing could theoretically break current cryptographic protections. Separately, Israeli quantum computing startup Qedma, backed by IBM, secured $26 million in a Series A funding round to address errors in quantum computing technology. Experts have noted that quantum breakthroughs might enable the recovery of lost Bitcoin by cracking old private keys, presenting both risks and opportunities for the cryptocurrency ecosystem.