Hydd AlgorithmHydd AlgorithmOpen app
Privacy protocol / Robinhood Chain

Hold HYDD.
Stay Private.

HYDD is a privacy token on Robinhood Chain. Payments land on one-time stealth addresses, and every trade pays the vault holders.

Open app
what anyone can traceyour address, public

A normal token. Every balance and payment is a public record, and one labelled address ties the rest to you.

Vault backing

HYDD in the vault

Every share of the vault claims part of this HYDD. Payments move shares to one-time addresses; only their owners can find them.

Shielded supply
-
of all HYDD sits in the vault
Holder yield
-
growth of a share's value since launch
Network fee
-
HYDD suggested for a relayed payment
Price
-
HYDD per 1 ETH, moving average

Follow one payment.

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

  1. 01Your wallet

    Sign once

    Your wallet signs one message and your stealth keys are derived from it. Nothing new to write down: same wallet, same keys, on any device.

    Example payment · 1,500 HYDD01/05

    After this step

    Signature
    kept in this browser
    Spending key
    derived locally
    Viewing key
    derived locally
    Sent to the chain
    nothing

    First time only: one small transaction registers your public stealth key, so others can pay you privately.

  2. 02Your browser

    A fresh address for your friend

    The app mixes your friend's public stealth key with a random secret and computes a one-time address only they can control. It has never appeared on-chain before.

    Example payment · 1,500 HYDD02/05

    One-time address

    Ephemeral key
    0x…
    Computed by
    your device
    Keys sent
    none
    Friend's wallet
    not on it
  3. 03Relayer

    Signed, then relayed

    Stealth addresses never need ETH. You sign the transfer and anyone can relay it, taking a small fee in HYDD from your balance. The amount you send stays public.

    Example payment · 1,500 HYDD03/05

    Transaction

    Signed by
    your one-time key
    Sent by
    a relayer
    Network fee
    paid in HYDD
    Amount
    1,500 HYDD, public
  4. 04Vault

    The vault moves the share

    The vault checks the signature, moves the share to the new address and publishes an announcement so the recipient can find it.

    Example payment · 1,500 HYDD04/05

    Stored on-chain

    One-time address
    0x…
    Ephemeral key
    0x…
    View tag
    0x…
    Amount
    public
    Sender
    public
    Friend's wallet
  5. 05Your friend

    Only your friend can find it

    Their viewing key scans the announcements and recognises the payment: 1,500 HYDD, ready to spend or sell. Anyone can still verify the transaction.

    Example payment · 1,500 HYDD05/05

    What your friend sees

    Received
    +1,500.00 HYDD
    At
    a one-time address
    Status
    spendable

Every trade pays the vault holders.

The creator fee on every HYDD trade, wherever it happens, buys HYDD for the vault. Every share of the vault grows with it. Yield depends on real trading and is not guaranteed.

  1. Every trade

    On the Pons curve, on Uniswap v4 or through any aggregator, each trade pays a creator fee.

  2. Harvester

    Collects the fee and buys HYDD at the average price. Whoever calls it keeps a 0.5% tip.

  3. Vault

    Receives that HYDD as a donation, without issuing new shares.

  4. Every share

    Each share of the vault is worth more HYDD. Yours included.

Harvested
99.5%
of collected fees, bought for the vault
Trade fee
-
charged by Pons, in total

Value of one launch share, in HYDD

1.0000 at launch. It rises when fees reach the vault.

The chart fills in as fees reach the vault.

Get HYDD.

ERC-20 · Robinhood Chain
Hydd Algorithm
Explorer

  1. Buy it privately

    Pay ETH in the app and HYDD lands straight in the vault. The purchase itself is visible; where you send it next is not linked to your friend's wallet.

    Open app

  2. Trade it anywhere

    HYDD is an ordinary ERC-20: on its Pons curve, on Uniswap v4 once it graduates, and through aggregators.

  3. Shield what you hold

    HYDD bought elsewhere sits in your wallet in public. Shield it in the app and it becomes a vault share, where it starts earning.

No keys but yours.

Hydd Algorithm

No freezes, no backdoors.

The vault has no pause and cannot be upgraded, and no one can move a share without its owner's signature. The contracts are unaudited, so start small.

  • Owner's signature only
  • No pause
  • Not upgradeable
deriving keysin this browser

Keys made on your device.

Your stealth keys are derived in your browser from one wallet signature. They never leave the page, and no server sees them.

sent by
a relayer
ETH on the address
0 ETH
network fee
paid in HYDD, from your balance

Stealth addresses never need ETH.

The owner of a one-time address signs; anyone can relay the payment and take a small fee in HYDD. Nothing has to be funded first, so nothing links back to your wallet.

Nothing to back up.

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

Public, and still verifiable.

Every payment can be checked by its transaction: which one-time address was paid and how much. The sender stays visible too.Verify a payment

Payment verified

recipient
0x51d0…77be
amount
1,500.00 HYDD
recipient's wallet
not revealed

Questions.

Your wallet is nobody's business.

Open app