floor_vault holds a quote reserve and issues TOK as shielded notes or as the SPL mirror TATER. Every epoch a Groth16 proof shows the hidden floor did not fall and the live reserve covers the live supply. Redemptions pay out at the floor through Light-compressed quote notes. Write-up: Hot Potato: a token with a hidden floor that is proven never to fall.

The four-day mainnet run (25 to 29 October 2026) is wound down; its full trade history and what it showed are in Hot Potato post-mortem.