voidcashOpen app
Zero-knowledge privacy on Elysium

Elysium
Private Layer

Hold, send and trade from one private balance, and withdraw to any address the moment you want. The edge on Elysium is privacy, and now it's yours.

Open the app Buy $VOID
Privacy set
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HYPE shielded
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Through the pool
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Private transactions
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VOID burned
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Connecting
How it worksZKPrivate HYPE on Elysium

Pay privately
in four steps.

Proofs run in your browser, and your keys never leave it.

  1. Deposit into the vault. Your HYPE becomes a private note only your keys can open. It's free. The deposit is public, but what you do next isn't.

  2. Pay anyone privately. Send to any address or payment link. The chain checks a proof and never learns who paid whom, or how much. You only pay gas.

  3. Withdraw to any address. Move HYPE from your notes to any address, minus a 1% exit fee. Your own wallet never appears on the transaction.

  4. Exit fees burn VOID. Half of every HYPE exit fee buys and burns VOID. The other half goes to the team. VOID's trading tax funds a second burn.

Privacy

Public chains show everything.
We show a proof.

Public ElysiumThrough voidcash
A public transfer
from
0x51d0…77be
to
0x9a3c…e210
amount
1,250.00 HYPE
sender balance
4,210.55 HYPE
history
every payment, linked
anyone can read itforever
Through voidcash
from
to
amount
sender balance
history
what the chain checksproof ✓

Deposits and withdrawals are public, amounts included. The same amount going in and out minutes apart is easy to connect, so give it time and vary what you withdraw.

Security

You hold the keys.
We never see them.

1
signature to create your keys
0
fees to deposit or send
0
servers that see your notes
1%
exit fee, half used to burn VOID
Browser

Proofs run on your device.

Each proof takes seconds to generate in your browser. Your notes and keys never leave it, and no server ever sees them.

Vault

Only your signature can spend a note.

In an emergency the vault can be paused, which stops all spending until it resumes. It can also be upgraded to keep its proof system current. Both happen publicly on-chain.

Bundler

Gas comes out of your notes.

Private sends and withdrawals pay gas in HYPE from your notes. A bundler submits them, so your address never appears.

Keys

Nothing new to back up.

Your keys come from a single wallet signature. Use the same wallet on any device and you get the same keys.

Proof of payment

Provable when you need it.

Every private send comes with a link you can share. It shows who was paid and how much, and nothing else about you.

Verify a payment
recipient
0x51d0…77be
amount
15.00 HYPE
sender
not revealed
  1. BuiltVault and Noir proofs
  2. BuiltPrivate gas via ERC-4337
  3. BuiltPayment links and proofs
  4. LivePool opens on Elysium
  5. LiveVOID launches
The burn

More usage means less VOID.

The pool charges one fee, 1% on withdrawals. Half of the HYPE fees buys and burns VOID, and the other half goes to the team.

VOID is an ERC-20 on Elysium. It trades on its own Uniswap v4 pool and through any aggregator that routes it. The voidcash app can hold, send and withdraw VOID privately, but it doesn't trade it.

  1. 01Withdrawal

    Each withdrawal pays 1% of the amount leaving the pool. Deposits and private sends only pay gas.

  2. 02Fee collector

    HYPE exit fees are split evenly between the team and VOID buybacks. Fees on VOID withdrawals go to the team.

  3. 03Buy and burn

    VOID is bought in small steps, at most once every 12 seconds and with no more than 0.5% price impact, then sent to 0x…dEaD.

  4. 04Trading tax

    VOID's trading tax is split between the platform, the team and a buyback that also burns VOID.

Questions

What to know first.

The full details are in the docs.

What is voidcash?

voidcash is a private HYPE pool on Elysium. Once deposited, your HYPE sits in the vault as an encrypted note. The amount, sender and recipient are hidden, and every move is made with a zero-knowledge proof instead of a public transfer. The vault also holds listed tokens: VOID, VOLTA, BLOB and YIELDEX so far.

What does it cost?

Deposits and private sends have no fee. You only pay network gas, which private sends and withdrawals take from your notes. Withdrawing to a public address costs 1% of the amount leaving the pool.

Can I trade from my private balance?

Yes. Pick a Volta launch and buy or sell it out of your private balance. The vault makes the trade, so your wallet never touches the pool. Anyone can see the trade happened, but not who made it. It costs the same 1% fee as a withdrawal, and if it doesn't go through, your whole input comes back with no fee.

Where does VOID come in?

VOID is the voidcash token, trading on Elysium. HYPE exit fees go to a fee collector, which pays half to the team and uses the other half to buy and burn VOID. The buys are kept too small to be worth sandwiching. VOID's trading tax funds a second buyback and burn. You can also hold VOID privately: shield, send and withdraw it like HYPE, with gas paid from a private HYPE note. You don't need any VOID to use the pool.

Can anyone freeze or take my notes?

No one else can spend your notes. A note only moves with its owner's signature. They can be delayed or paused, though. Large withdrawals wait 24 hours before they're paid, and the vault's guardian can stop them during that time. In an emergency the guardian can pause all spending until it resumes. The vault can also be upgraded, for example to keep its proof system current. All of this happens publicly on-chain.

What do I need to start?

A wallet like MetaMask or Rabby on Elysium, and some HYPE. 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 need to?

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

What if this website goes away?

You don't lose access. Your keys come from your wallet's signature, not this site, and the vault contract is public. Private payments are standard ERC-4337 operations, so anyone can run a bundler and submit them.

App

Getting started takes one signature.

Connect a wallet on Elysium and sign once. From there you can deposit, send and withdraw HYPE privately.

  1. 01 Connect
  2. 02 Sign once
  3. 03 Shield HYPE
Open voidcash
Financial privacy on a public chain.

VoidCash Key Protocol Highlights

About VoidCash (Void Cash) Protocol on Elysium

VoidCash — also searched as Void Cash or voidcash at void-cash.com — is a non-custodial zero-knowledge privacy protocol purpose-built for native HYPE and tokens on the Elysium blockchain. On transparent public ledgers, every wallet balance, salary, treasury movement, and counterparty link is permanently exposed. VoidCash restores practical financial confidentiality by enabling anyone to deposit HYPE into an immutable cryptographic shielded pool with zero deposit fee, manage private notes locally, transfer value privately, and withdraw to clean Elysium addresses.

Client-Side Zero-Knowledge Proofs and Non-Custodial Security

Security in VoidCash relies on verifiable zero-knowledge cryptography rather than trusted intermediaries. When you shield HYPE or send a private payment through VoidCash, cryptographic commitments and nullifiers are generated inside your browser using deterministic viewing and spending keys derived from your wallet signature. Elysium smart contracts verify each proof mathematically without ever learning which deposit commitment backs a withdrawal, ensuring complete self-custody at every step.

VOID Token Utility and Automated Buy-and-Burn Alignment

The VOID token sits at the core of the VoidCash ecosystem. Entering the VoidCash privacy pool costs nothing in protocol fees so liquidity and anonymity depth can grow without friction. When funds exit the shielded pool back to a public address, half of the modest protocol exit fee is programmatically used to buy VOID on the open market and burn it permanently, directly linking VoidCash adoption on Elysium with sustained VOID scarcity.

VoidCash Frequently Asked Questions

What is VoidCash and how does it work on Elysium?

VoidCash (void-cash.com) is a non-custodial zero-knowledge privacy layer on Elysium that lets users shield HYPE into cryptographic notes, send private transfers, and withdraw to fresh addresses without linking wallets.

Is VoidCash free to deposit HYPE?

Yes. VoidCash charges zero protocol fee on deposits into the shielded pool. Only withdrawals incur a small exit fee, 50% of which buys and burns VOID tokens on-chain.

Does VoidCash ever custody my private keys or funds?

No. VoidCash is strictly non-custodial. Zero-knowledge proofs are generated locally in your browser and settled directly by immutable smart contracts on Elysium.

What is the relationship between VoidCash and the VOID token?

VOID is the native ecosystem token of VoidCash. Half of all withdrawal fees generated by the VoidCash shielded pool are used to purchase and permanently burn VOID.

Where can I read the official VoidCash technical whitepaper?

You can read and download the full VoidCash whitepaper directly at void-cash.com/voidcash-whitepaper.pdf for complete cryptographic specifications and Merkle tree architecture.