Zorrito

The no-loss lottery

You put money into a pool. The pool earns yield on Blend. Every week, one saver takes the yield. Nobody loses their initial capital.

Arturo Grande, founder · Argentina Builder Challenge, BAF × Stellar · September 2026

Saving does not motivate. The lottery destroys capital.

Problem
2 USD

What someone saving 50 USD at 4 % earns in a year. It changes nothing and motivates nobody.

0 USD

What almost everyone who plays the lottery is left with. It motivates like nothing else, and the money never comes back.

1956UK Premium Bonds: a state-run no-loss pool with 22 M participants
812 → 0Stellar ecosystem projects surveyed; none does prize-linked savings

Combine the two and drop what is bad about each

Product
1

You deposit

USDC, or XLM and USDT0 swapped at the door. It goes straight into Blend.

2

The pool earns

Blend's interest accumulates as the prize, and grows live.

3

The timer runs out

When the week is up, the draw fires on its own. drand provides the number and the contract verifies it.

4

One wins

The whole prize goes to one winner. Everyone else keeps what they put in.

Withdraw whenever you want: no penalty, no waiting for the draw, no permission.

On mainnet, with real money

Product
Prize at stake
12.3456789 USDC
Live
Draw in6d 23:59:58

Illustrative numbers

Join with what you have

USDC, XLM or USDT0. The app quotes Soroswap and the Stellar DEX and swaps through whichever pays more.

Streak and referrals

Seven days of “I saved today” double your odds. Each referral adds 10 % of their capital to your weight.

Tested end to end

Swap, deposit into Blend and withdrawal with real money from the app. Freighter, Cosmos, xBull and Lobstr.

Sep 15live on mainnet
3 daysfrom idea to mainnet
60contract tests
5,000USDC cap until the audit

How it makes money (proposed)

Business

Fee on the prize

5 to 10 % of the yield drawn each round. Never on the capital. Fixed in the contract, no admin.

Pools for communities

A branded pool for a wallet, a fintech or a club: same contract, another token or cadence. The fee is shared.

1 M USDCin the pool at 8 % a year
80,000 USDa year in prizes
8,000 USDa year for Zorrito at 10 %, with no custody
MotivatesCapital safeVerifiable randomnessOn Stellar
LotteryYesNoNoNo
Blend directlyNoYesn/aYes
PoolTogetherYesYesYesNo
ZorritoYesYesYesYes

Why Stellar, and why trust it

Tech

Real yield

Blend v2, non-collateral Supply position: it earns interest and cannot be liquidated. USDC pays ~8 % a year.

Verifiable randomness

drand signs a number that did not exist at close. The contract verifies it with Protocol 22's BLS12-381. Nobody can bias it.

Automatic, cheap draw

When the timer runs out a keeper fires the draw for a fraction of a cent. If it fails, the app retries on its own.

0roles: no admin, no pause, nobody touches funds
2^20accounts in a Fenwick tree; ~21 writes per operation
60tests, including real Blend and BLS signatures
RustSoroban SDK 27 · Next.js 16 · stellar-sdk 17

Who is behind it, and what comes next

Arturo Grande

Arturo Grande

Product builder, entrepreneur and educator. Founder of Desafiatech, DevRel at Celo, SpaceXAI Ambassador, host of Builders OFF the Record (275 K+ views). Salta, Argentina.

Today

Mainnet with USDC on Blend · join with XLM and USDT0 · streak and referrals · Freighter, Cosmos, xBull and Lobstr

Q4 2026

Audit and a higher cap · fee on the prize in the contract · distribution through communities

2027

Branded pools per community · USDT0 pool · mobile app and draw notifications

Zorrito

Try it on mainnet

stellar.zorrito.app

We are looking for an audit to raise the cap, and distribution with wallets and communities across Latin America.

github.com/artugrande/zorrito · stellar.zorrito.app/docs · pool contract on stellar.expert

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