Scanners call pages clean that no keyboard user can navigate. We measured the gap: 95,524 keyboard traversals across 11,902 US municipal domains, with 83,212 screenshots. Among pages a scanner called clean, only 46.2% are reachable by keyboard. The WCAG 2.1 AA deadline for public entities of 50,000+ is 26 April 2027, and 26 April 2028 for the rest. We ship a free checker, the largest open traversal dataset, and evidence timestamped into Bitcoin via OpenTimestamps.