What it is
Plinth is a liquidity vault on Robinhood Chain, implemented as a Uniswap v4 hook around its own $PLINTH/WETH pool. The thesis: the floor only ever moves up.
Mechanism — a ratcheted floor
- Every swap pays a 3% fee: 1.20% is laid under the price as permanent WETH liquidity, 1.20% goes to depositors, 0.60% funds operations.
- The floor is ratcheted inside the hook — it has no downward path. The hook rejects any call that would lower it: "the whole guarantee is one comparison."
- A keeper converts coin-side fees to WETH and pushes the bid up; each lift is a course, recorded in an on-chain ratchet blotter.
Trust model
No admin key, no second token, no points program, no launchpad — the vault wraps its own pool and nothing else. Hook, keeper and position NFTs are pure code, and nothing is reversible.
Stack
React (Vite) + Tailwind static SPA, served via Cloudflare.