SCRATCHR Docs

Odds, mechanics and trust model — the whole placard, in writing.

Introduction

SCRATCHR is an on-chain scratch lottery on Robinhood Chain. You buy a ticket with ETH or $SCRATCH, scratch it, and prizes are paid in tokenized real stocks — NVDA, TSLA, GME and more — as ERC-20 tokens delivered to your wallet.

ChainRobinhood Chain (EVM L2, chainId 4663, ETH gas)
Ticket tiersGREEN $1 · GOLD $5 · OBSIDIAN $20 (CLUB only)
Prize rate70%, posted public
Token$SCRATCH — fair launch on pons.family
InterfacesWeb app + X agent (@tryscratchr) + Telegram bot

Odds & prize table

One odds table applies to every tier — higher tiers scale prize amounts, never probabilities. 55% of tickets pay something; the overall prize rate is 70% of ticket volume, pity included.

Result        Odds          GREEN $1   GOLD $5   OBSIDIAN $20
Zonk          45%           —          —         —
Dust          25%           $0.40      $2        $8
Money back    18%           $1         $5        $20
2x            9%            $2         $10       $40
5x            2.7%          $5         $25       $100
20x           0.29%         $20        $100      $400
JACKPOT 500x  1 in 10,000   $500       $2,500    $10,000*

* OBSIDIAN jackpot pays from the progressive pot; while the pot is below max, the jackpot equals the current pot — always shown live. Pity: 10 consecutive zonks make the next scratch pay at least money-back, and the luck meter is displayed on screen.

Provably fair

Every roll is computed as HMAC-SHA256(serverSeed, clientSeed + ":" + nonce). The SHA-256 hash of the active server seed is published before any scratch uses it. Seeds rotate every 24 hours or 10,000 scratches, whichever comes first — the old seed is revealed at rotation.

  • Your client seed defaults to a random string and can be changed any time.
  • The verify page recomputes any historical roll in your browser — no API trust needed.
  • Prize payouts are on-chain stock-token transfers from the public pool wallet, visible on Blockscout.

Balance, withdrawals & fees

Prizes are USD-denominated and accrue to your balance ledger. Each win is assigned a random stock from the prize pool (NVDA, TSLA, GME, AAPL, GOOGL, AMZN, META, PLTR, COIN, NFLX) at live market rate.

Minimum deposit$2 (ETH or $SCRATCH)
Minimum withdrawal$5
Withdrawal feeZero. Always.
Instant sendWins ≥ $20 offer immediate on-chain delivery
Withdrawals ≥ $50024h review window (anti-exploit)
Thin liquidity fallbackIf a prize stock can't be bought within 2% slippage, the prize pays in ETH at the same USD value

The X agent

Bind your wallet to your X handle once (one signed message on the web app — the agent never holds your keys). Then commands are tweets, and reveals are public replies with a verify link.

@tryscratchr scratch x5     scratch 5 tickets
@tryscratchr balance        scratches + prizes + luck meter
@tryscratchr my stocks      prize portfolio breakdown
@tryscratchr withdraw       send prize tokens on-chain
@tryscratchr jackpot        current progressive pot
  • Limits: 50 scratches per day via X, 30s cooldown between command tweets.
  • Minimum X account age: 3 months (anti-bot).
  • The same commands work in the Telegram bot.

$SCRATCH & THE CLUB

Odds are identical for everyone. $SCRATCH buys volume, access and prestige — never probability.

Pay with $SCRATCH+25% scratches · 50% of tokens spent are burned
THE CLUB (hold 10M)3 free scratches/day (capped $1 each) · OBSIDIAN tier · gold badge
Jackpot payout50% stocks + 50% $SCRATCH
Ticket buyback-burn10% of every ticket
Special editions$SCRATCH-only purchase, 100% burned
Supply1B, 100% fair launch on pons.family, liquidity locked

Pool wallet & security

  • The prize pool hot wallet and cold treasury addresses are published — audit solvency any time on Robinhood Chain.
  • Withdrawals under $100 are instant and automated; the hot wallet has a daily outflow cap.
  • Launch policy: 100% of pons.family creator fees seed the prize pool for the first 30 days (then 50/50 with treasury).
  • SCRATCHR never custodies your wallet — deposits are transfers you sign, prizes are tokens you receive.

Disclaimer

SCRATCHR is an entertainment product involving games of chance with published odds. It is not an investment product, a securities offering, or financial advice. Tokenized stock prizes are third-party RWA tokens on Robinhood Chain; they are not brokerage shares. $SCRATCH is a utility token for access and in-app perks — it carries no profit expectation, no equity, and no claim on revenue. Games of chance may be restricted in your jurisdiction; you are responsible for complying with local laws. Play with what you can afford to lose. 18+ only.