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CannonPad docs

How launches, the bonding curve, fees and graduation work on CannonPad, a fair-launch pad on Robinhood Chain (chain ID 4663).

Overview

Every coin on CannonPad starts the same way: the whole supply sits in a bonding curve and everyone buys from it at the same price. There is no presale and no team allocation. When the curve sells out, the coin graduates to a Uniswap v4 pool whose liquidity is locked forever.

Total supply1,000,000,000
Sold on the curve800,000,000
Reserved for the pool200,000,000
Platform fee0.7%
Max creator + holder tax5%

Launching a coin

  1. Open Create and connect your wallet on Robinhood Chain.
  2. Enter a name and a 2–10 character ticker. Add an image (PNG, JPEG, GIF or WEBP, up to 4 MB) and an optional description.
  3. Pick the pair: ETH, a stock token or an eligible Pons token. The page checks eligibility live.
  4. Under Show more options, set the creator tax and holder tax (together at most 5%), an optional initial buy and your socials.
  5. Confirm the transaction. If the initial buy is paid in an ERC-20 pair, your wallet first asks to approve that amount.

Launching itself costs only gas. Taxes are fixed forever once the coin is live.

The bonding curve

Each coin has its own curve contract: a constant-product market over virtual reserves. With x the virtual pair reserve and y the virtual token reserve, every trade keeps x · y from going down, and the price is x / y.

The starting token reserve is set so that when all 800M sale tokens are bought, y has fallen to a quarter of its start. That gives three useful properties:

  • The curve raises exactly 3× its virtual pair reserve.
  • The last price on the curve is 16× the first price.
  • At that last price, the raised pair tokens match the 200M reserved tokens, so the Uniswap pool opens at the curve’s final price with almost nothing left over.

The virtual pair reserve is chosen per pair so a curve raises roughly $10K before it graduates. Buys and sells take a slippage limit and a deadline, so a trade reverts instead of filling at a worse price than you accepted.

Fees and taxes

Every buy and sell on the curve pays:

  • 0.7% platform fee to the CannonPad treasury.
  • Creator tax to the coin’s creator, chosen at launch.
  • Holder tax paid out to holders as dividends, chosen at launch.

Creator tax and holder tax together are capped at 5%. After graduation the Uniswap pool charges the same total as its LP fee, and fees collected from the pool are split in the same proportions, so creators and holders keep earning after the curve is gone.

Holder dividends

If a coin has a holder tax, that share of every trade is distributed to everyone holding the coin, pro rata to their balance, in the pair asset (ETH, VRAX and so on). Dividends accrue automatically; claim them on the token page under Fees & dividends. The curve, the pool and the burn address never earn dividends.

Graduation

When the last sale token is bought, the curve stops trading and anyone can call migrate(). The curve then moves all raised pair tokens plus the 200M reserved tokens into a full-range Uniswap v4 position.

That position is owned by the curve contract itself, which has no function to withdraw it. The liquidity is locked forever, for the creator and the platform alike. Pool fees are still collected and split between the platform, the creator and holders.

Pairs and eligibility

A coin can be paired with:

  • ETH, the chain’s native asset.
  • Stock tokens priced by Chainlink, such as USDG or TSLA.
  • Graduated Pons tokens with at least $100K market cap and $10K pool liquidity. See Graduated Pons and Pair tokens.

Eligibility is checked when you launch: the Create page fetches a signed attestation for the pair, and the factory rejects pairs without a valid one. Pair tokens that charge a fee on transfer are rejected by the curve.

Contracts

Every coin gets its own token and curve contracts. Both addresses are listed on the coin’s page under About. Launch tokens have no owner, no mint function and no blacklist.

Risks

The contracts are unaudited. They are open source and tested, but they have not been audited. Only trade what you can afford to lose.
  • Prices on a curve move fast. Early buyers, the creator included, can sell into later buyers.
  • A coin’s name and image are chosen by its creator. Check the contract address before you trade.
  • Taxes are fixed at launch but can be up to 5% per trade on top of the 0.7% platform fee.