Robinfun — Whitepaper

RobinFun is a permissionless, fair-launch token launchpad built natively for Robinhood Chain. Anyone can deploy a token in a single transaction. Every token starts trading immediately on a transparent bonding curve — no presale, no team allocation, no insider rounds. When a token reaches its graduation threshold, it automatically migrates to a public Uniswap market with its liquidity permanently burned.

The result is a level playing field: the price you see is the price everyone gets, the curve is the same for every buyer, and liquidity can never be pulled.

Traditional launches concentrate supply and information with insiders. A bonding curve replaces that with a deterministic pricing function: tokens are sold from a smart contract at a price that rises as more are bought and falls as they are sold back. There is no order book to spoof and no liquidity to rug — price discovery is mechanical and on-chain from the very first trade.

RobinFun uses a constant-product curve with virtual reserves (the same model that powers the most battle-tested launchpads). The contract holds a token reserve and tracks a virtual ETH reserve; buys move along the curve x · y = k, so each purchase raises the price and each sale lowers it, smoothly and predictably.

Targets are denominated in USD and snapshotted to ETH at the moment a token is created, so creators get consistent dollar milestones regardless of where ETH trades.

Every token launched on RobinFun shares the same fixed, transparent parameters:

Once the curve fills — i.e. $9,300 (≈ 5.74 ETH) has been raised, which corresponds to a market cap of ≈ $44,127 — the token graduates. Of the ETH raised, $9,000 is paired with the 300,000,000 tokens reserved for liquidity and deposited into a Uniswap V2 pool, and the remaining $300 funds the protocol treasury. The resulting LP tokens are sent to a burn address — 100% of the liquidity is locked forever. From that point on, the token trades freely on the open market and can never have its liquidity removed.

Graduation is finalized by a permissionless on-chain call and is hardened against front-running: liquidity is added directly to the pair so that no one can capture or block the migration.

RobinFun charges a simple, symmetric 1% trade fee — 1% on every buy and 1% on every sell. That fee is split evenly:

The fee applies both before and after graduation — on the bonding curve and on the Uniswap market — so creators keep earning from their token's volume for its entire life, and the protocol is sustainably funded. The fee is identical for every token.

Fees are always paid in ETH. On the curve, the fee is taken directly in ETH. On the Uniswap market, the fee accrues in the token contract and is automatically swapped to ETH once it's worth at least $5, then sent to the creator and treasury 50/50 — so both sides always receive ETH, never illiquid tokens.

The contracts are covered by an extensive test suite, including adversarial tests and a solvency invariant that fuzzes thousands of create/buy/sell/graduate sequences. Key protections include:

• Per-curve ETH accounting — one token's funds can never be spent by another.
• Reentrancy guards and checks-effects-interactions throughout.
• Graduation decoupled from trading, so a DEX hiccup can never freeze a curve.
• Direct-to-pair liquidity provisioning, immune to pool-seeding attacks.
• Best-effort fee payouts that can never brick trading.

RobinFun runs on Robinhood Chain (an Ethereum L2, chain ID 4663), using ETH as the native gas token. Tokens graduate into the chain's native Uniswap V2 deployment. Everything — creation, trading, graduation — happens on-chain and is verifiable in the explorer.

The launchpad factory is deployed and source-verified on-chain:

• RobinFunFactory: 0xD952A74C85a2221a7DaB185c62cfD7EBa8C94AFC

RobinFun is experimental software for launching and trading tokens on a bonding curve. Tokens launched on RobinFun are not investments and carry no promise of value. Nothing here is financial advice. Crypto assets are volatile and you may lose everything you put in. Always do your own research and only risk what you can afford to lose.