Last month StarkWare mined the first-ever quantum-resistant Bitcoin transaction on mainnet — no hard fork, but a steep GPU bill: around
$320 each, because a valid hash appears roughly once in 70 trillion attempts.One week of open competition later:
$67. Down 80%.The leaderboard is AI-dominated — Anthropic's Opus 5 and Fable 5.1 on top, GPT-6 Astra, Grok 4.6, and Kimi close behind. A key benchmark jumped from 146 M to 820 M+ candidates per second on a stock
RTX 4090.StarkWare cautions that
$67 is an estimate, not a price, and a soft fork remains the proper fix. But seven days and minus 80% is a hard number to argue with.Decrypt