Ponsi Documentation

How Ponsi works

Everything about the Ponsi vault: the mechanism, the on-chain split, the contract functions, and the risks. Fully open, nothing off-chain.

Robinhood Chain · id 4663
01

Overview

Ponsi is a single public smart contract on Robinhood Chain. You deposit ETH, and you earn interest paid by every depositor who comes in after you. There are no lockups, no GPUs, and no hidden scoring. You can withdraw your interest or your entire balance at any time.

It is called Ponsi for a reason: the interest is funded by new deposits, not by outside yield. Read the risks before you deposit anything.

02

How it works

Every time someone deposits ETH, the contract splits it on-chain and credits interest to everyone already in the vault. The earlier and larger your deposit, the bigger your share of what comes next.

  • Deposit ETH into the vault contract.
  • Earn interest automatically as new deposits arrive.
  • Withdraw your interest or full balance whenever you want.
03

Deposit split (75 / 15 / 10)

Each deposit is divided three ways, transparently and on-chain:

  • 75% stays as your own withdrawable balance.
  • 15% is paid immediately as interest to everyone already on deposit, weighted by their balance.
  • 10% goes to a reserve used for manual $PONSI buybacks.
04

Interest accrual

Interest accrues continuously using a reward-per-token accumulator, the same accounting used by Synthetix staking. When a deposit arrives, its 15% interest share is distributed pro-rata across all current balances, so your claimable interest only ever goes up.

Your accrued interest is always visible via earned(address) and is claimable at any time without touching your principal.

05

Withdrawals

Withdrawals are direct and permissionless. The contract pays you straight from its balance, with no approvals or intermediaries.

  • claim() pays out your accrued interest and leaves your balance in.
  • withdrawVault(amount) pulls part of your balance back, 1:1.
  • withdrawAll() pulls your full balance plus interest in one transaction.
06

Contract & network

Everything is verifiable on the public explorer: the vault address, every deposit, and every payout.

Vault contractsoon ↗
NetworkRobinhood Chain · id 4663
ExplorerBlockscout ↗
Contract ABIvaultAbi.json ↗
$PONSI tokensoon
Deposit split75 / 15 / 10
07

Function reference

deposit()Payable. Send ETH; 75% credited to your balance, 15% paid as interest to existing depositors, 10% to the reserve.
earned(address)View. Interest accrued to an address so far, claimable at any time.
vaultOf(address)View. An address's current on-deposit balance.
claim()Withdraw your accrued interest to your wallet; principal stays in.
withdrawVault(uint256)Withdraw part of your balance, paid back 1:1.
withdrawAll()Withdraw your full balance plus interest in a single transaction.
totalVault()View. Total ETH currently on deposit across all users.
totalPaidOut()View. Cumulative interest paid out to depositors.
totalDeposited()View. Cumulative ETH ever deposited into the vault.
08

Token & reserve

The 10% reserve accumulates in the contract and is used for manual $PONSI buybacks by the owner. The $PONSI contract address is published at launch and shown in the footer and the contract table above.

09

Risks

Ponsi is exactly what the name says. Interest is paid from new deposits, and it only works while new money keeps coming in. When deposits stop, there is not enough for everyone to withdraw in full, and whoever is last can get nothing. There is no insurance. Only deposit what you can afford to lose, and audit the contract at your own risk.

10

FAQ

Where does the interest come from? From the 15% share of every new deposit, split across everyone already in.

Can I lose my deposit? Yes. If new deposits dry up, later depositors may not be able to withdraw in full.

Is there a lockup? No. You can withdraw your balance or interest at any time.

Is it audited? No formal audit. The full source and ABI are public — verify before depositing.