How it works Holder yield Get HIDDEN Analytics Verify a payment Docs FAQ Buy HIDDENBuy HIDDEN
Privacy token · Robinhood Chain

Hold HIDDEN.
Stay hidden.

Balances live in encrypted notes only you can read, and every trade pays the private holders.

Built on open, permissionless infrastructure

On most chains anyone can read your balance and every payment you make. HIDDEN keeps them in encrypted notes only you can open.

Learn moreLearn more

Of every trade to holders

2.7%

Gas paid by your address

0 ETH

Admin keys over notes

0
How it works

Follow one payment.

Send 1,500 HIDDEN to a friend and see what each part of the system learns along the way.

Sign once · personal_sign
Signature kept in this browser Viewing key derived locally Proof written by your device Sent to the chain nothing

Sign once, prove on your device

One signature derives your keys. The proof is written in your browser.

Private payment1,500 HIDDEN
BBundler VVault FFee in HIDDEN 0Gas from you ?Your address hidden
Submit via bundler

A bundler carries it

The fee comes from your notes. Your address never pays gas.

+1,500.00 HIDDEN

Only your friend can read it

Their viewing key opens the note. Everyone else sees ciphertext.

Holder yield

Every trade pays private holders.

A fee on every HIDDEN trade, wherever it happens, buys HIDDEN for the vault. Every note's share of the vault grows with it.

2.7% of every trade

Every trade pays 3%: the 1% Pons fee and a 2% creator tax, on the curve, on Uniswap v4 or through any aggregator. 2.7% comes back to private holders.

PPons curve UUniswap v4 AAggregators

The harvester

Anyone can call harvest(). It keeps the gas for private payments topped up, then buys HIDDEN with the rest for the vault.

Every trade2.7% in ETH
Harvesterharvest()
Buys HIDDENwithin 3% of average
Vaultno new shares
Every note1 share = 1.0000

The vault

1.0000 at launch. It rises each time fees reach the vault, with no new shares minted.

Every note · Yours included

Every note grows

Each note's share of the vault is worth more HIDDEN. Only private notes earn; public HIDDEN does not.

By design

No keys but yours.

Nobody can freeze a note, and nobody stands between you and your balance.

Nobody can freeze a note

No admin key over notes and no upgrade. A note moves only with its owner's signature, the team included.

Proven on your device

Zero-knowledge proofs are written in your browser in seconds. Your notes and keys never leave the page.

Your wallet never pays gas

Private payments, sales and unshields pay a flat network fee from your notes, so your address never shows up.

Nothing to back up

Your keys come from one wallet signature. Same wallet, same keys, on any device.

Private, and still provable

Every private send comes with a proof of payment you can share: who was paid and how much, nothing about you.

No gatekeeper

Anyone can harvest the fees and any ERC-4337 bundler can carry a payment. Nobody but the owner can move a note.

Ecosystem

Works with what you already use.

HIDDEN is a plain ERC-20. Wallets, the Pons curve, Uniswap v4 and aggregators handle it unchanged.

Integration notesIntegration notes
Proof of payment

Private, and still provable.

Prove one payment to whoever needs it, and nothing else.

Share a link

A receipt only you can issue

Every private send comes with a proof of payment: a link that shows who was paid and how much, checked against the chain. It says nothing about you, and it cannot move the funds.

Verify a paymentVerify a payment

No wallet needed to check one.

receipt-v1.4663.0x…#9f2cVerify
Payment verified
Recipient0x51d0…77be
Amount1,500.00 HIDDEN
Sendernot revealed
Checked againstthe chain

Example receipt

Who sees what

Everyone learns less.

One private payment, told by every party that touches it.

Compare

A normal token, and a HIDDEN note.

What anyone can trace, side by side.

HIDDEN note
  • Balances live in encrypted notes only you can open
  • Payments hide sender, recipient and amount
  • Proofs are written on your own device
  • Your address never pays gas for a private action
  • Every trade pays you, through the vault
  • Keys come from one signature, nothing to back up
  • Prove one payment without revealing the rest
  • Hides among every note in the tree
Normal token
  • Every balance is a public record
  • Every payment shows who paid whom, and how much
  • One labelled address ties the rest to you
  • Every action is signed and paid from your address
  • Holding earns nothing
  • Your history is readable by anyone, forever
  • Showing one payment shows them all
  • Stands alone in a public ledger
Common questions

Questions, answered.

The details are in the docs.

What makes HIDDEN a privacy token?

HIDDEN is an ERC-20 that trades like any other. Shielded, it lives in the vault as an encrypted note: the amount, the sender and the recipient are hidden, and moving it takes a zero-knowledge proof instead of a public transfer.

Is buying HIDDEN private?

The purchase itself is visible on-chain, like any trade. What comes after is not: buy in the app and the tokens land straight in a private note, and the payments and sales you make from it do not link back to you.

Where does the holder yield come from?

From trading fees, not from new tokens. 2.7% of every HIDDEN trade is harvested: it keeps the gas for private payments topped up and buys HIDDEN for the vault, and the network fees private payments pay go to the vault too. It depends on how much HIDDEN trades, so nothing about it is guaranteed.

Can anyone freeze or take my notes?

No. There is no admin key over notes and no upgrade path, and a note moves only with its owner's signature, the team included. The vault has one limited role, a guardian that can pause new deposits; it cannot move, freeze or reveal anything already inside, and it can be renounced.

What do I need to start?

A browser wallet such as MetaMask, on Robinhood Chain, and some ETH to buy HIDDEN. You sign one message to create your privacy keys; the first time, one small transaction registers them so others can pay you.

Can I prove a payment if I have to?

Yes. Every private send has a proof of payment you can share as a link. Whoever opens it can check, against the chain, who received that one payment and how much. It reveals nothing else about you.

What if this website goes away?

Your keys come from your wallet's signature, not from this site, and the vault contract is public and immutable. Private payments go through standard ERC-4337 bundlers, so no single server stands between you and your notes.

Get HIDDEN

Three ways in.

ERC-20 on Robinhood Chain. Buy it privately, trade it anywhere, and shield what you hold.

Buy in the appBuy in the app
Your balance, your business

Your balance is
nobody's business.

Turn on privacy with one signature. Buy HIDDEN straight into a private note, or shield what you already hold.

Stay hiddenStay hidden