Researchers have reduced the estimated computational cost of a specialized Bitcoin quantum-safe transaction by 82% to $59. According to data from the Quantum-Safe Bitcoin Optimization Challenge, improvements in graphics processing software have lowered the projected cost from approximately $320 during StarkWare's initial mainnet demonstration in August, to $67 in September, and further to $59 on October 13. This breakthrough is expected to make this Bitcoin protection method more affordable against the potential threat of future quantum computers, without needing to wait for changes to Bitcoin's underlying protocol. Currently, about 6.04 million Bitcoin public keys are visible on-chain, facing potential quantum attack risks.