A computed cross-section of nacre. Offset courses of aragonite tablets are coloured by the interference of light in each tablet’s own layer stack; tablets thicken with depth, from about 408 nanometres at the top to 492 at the bottom, so the overtone walks from teal through green to mauve. Pointing at the panel reads out the thickness of the tablet under the pointer, the colour it reflects and the reflectance curve behind that colour, and tilts the surface — which shortens the optical path and shifts every colour, as a real shell does.
A nacre fishing hook hangs on a dark line from above the panel and sinks into a computed cross-section of shell; the panel’s probe rests on the point of the hook and reads the tablet under it.
Hookshade is a privacy workspace for Uniswap v4 on Robinhood Chain. Watch hooks that run in your own browser and never leave it. A batch-settled hook that lets the chain record one net swap instead of yours. And a shielded pool the trade comes out of, so the batch is settled by the pool and not by you.
The watch hooks are real. The Shade hook, its gate and the shaded pool are deployed on chain, with one WETH/USDG market seeded under them, and they pass 80 checks against the singleton’s own bytecode on every build. Nothing here has been audited, and the proving key is a development one. Each claim on this site says which of those it is.
Capabilities
Six properties. Three are running in your browser as you read this; three are in a contract you can read.
A watch hook is a rule: when a balance, a block or a pool price crosses a line, fire. The rule is sealed under a key your browser generated and will not export, and the only thing it ever sends anywhere is a read.
AES-GCM · No account · No serverEvery thirty seconds, while the tab is visible, all of your rules become one multicall. The RPC sees a list of addresses and slots. It does not see which rule asked, what the line is, or what happens when it is crossed.
Multicall3 · 30 s · Visible tab onlyA pool under the Shade hook cannot be swapped directly. Orders are cast into a batch; when it settles, buys and sells are matched at the pool’s own price and only the residual touches the pool. One swap per batch is what the ledger records.
beforeSwap gate · Matched at spot · Net residualA cast can be paid from a shielded note. The pool unshields into the batch and re-shields the output to a one-time key, so the address that settled the batch is the pool, not the person.
Groth16 · One-time keys · Poseidon tree160 pools on Robinhood Chain with 79 of them under a hook. The hook address itself says what it is allowed to do — the lowest fourteen bits are its permissions — and the pools page decodes them.
Live reads · Flag bits decoded · No indexerReading a chain needs no wallet, so the site asks for none. A wallet is connected for one transaction and the connection is not remembered. Your keys, your transactions, and your rules.
EIP-6963 · Not persisted · Wallet-approvedHow it works
Shade, Cast, Settle, Surface. One call each, and each one a transaction you can look up.
Deposit a token into the pool of notes. What you hold is a commitment in a Merkle tree, encrypted to your own viewing key, that nobody can spend but you.
Prove you own a note and cast its value into the open batch of a hooked pool. The pool, not you, is the address the batch sees — and the output is already addressed to a fresh one-time key.
Anyone closes a batch once its window ends. Buys and sells are matched at the pool’s price, fee-free; only what is left over is swapped, as a single swap, through the pool.
Spend the output note to any address, or keep it shaded and cast again. One proof, no queue, no address that can stop it.
Only Settle touches the pool, and it touches it once per batch. Two orders that match each other exactly leave the pool’s price and liquidity where they were — a property the test suite reads back from the singleton’s storage, one of 80 checks that run against its real bytecode.
Privacy
Privacy that does not say what it leaks is marketing. Each layer here names its own edge.
Watch hooks
Running nowHidden
Still visible
The Shade hook
DeployedHidden
Still visible
The shaded pool
DeployedHidden
Still visible
Comparison
The same workspace — hooks, pools, a chain — without the parts that were watching you back.
A monitoring workspace
With Hookshade
Pools
The list is a snapshot; every number beside it is read live from the singleton by your browser when you open the page.
Runs on
No indexer, no API key, no account and no server of ours between you and the chain.
Chain
Pool
Storage
Wallets
A rule you set here is yours in the plainest sense: it exists in one place, sealed, and the only trace it leaves is the read it makes. Set one and watch it work.
