Skip to documentationLaunch a token
What a launch creates, which inputs creators select and how opening valuation is enforced.
On this page
A fixed starting point
A Sinjoh launch creates exactly 1,000,000,000 tokens with 18 decimals. Its opening implied market capitalization is platform-set at 2 ETH, converted into the selected backing. This is a price-times-supply valuation, not 2 ETH of backing raised or deposited. Creators cannot override the opening valuation.
The factory rounds the token-price tick down to spacing 10. WETH-backed launches need no exchange-rate lookup for that 2 ETH conversion. Other backings require a supported, valid pricing source. A missing or stale required source prevents launch rather than inventing a price.
Inputs selected by the creator
| Input | Meaning / constraint |
|---|---|
| Identity | Name: 1–32 UTF-8 bytes; symbol: 1–10 bytes. Description: up to 1,000 bytes; logo and each social/site URI: up to 256 bytes. |
| Backing | A different deployed token with at most 18 decimals and a supported opening-valuation source. |
| Tax model | One model for the market, with separate buy/sell X, Y and Z. Creator rates are at most 2,500 bps. |
| Floor / sell surcharge | Enable the funded floor and optional sell surcharge according to the market configuration. |
| Yield | Opt into the compatible configured backing default at launch, when one is available. |
| Revenue destination | An address, Treasury, Floor when enabled, or a canonical creator route. |
One atomic market creation
- Select an approved, nonretired hook and validate the token metadata, backing and economics.
- The factory creates token/vault clones, registers the market and initializes its Uniswap v4 pool.
- The hook places the managed launch curve and tracks any integer-rounding inventory remainder.
- If selected, create and connect the deterministic creator route inside this transaction.
- If selected, execute the creator’s first buy and distribute its output. Invalid inputs revert the whole launch.
The pool uses LP fee 0 and tick spacing 10; Sinjoh’s backing-denominated charges are collected by the hook. Only the hook manages its liquidity. An outside LP cannot add arbitrary liquidity to the canonical market.
Optional first buy
The creator supplies backing and a minimum token output. The first buy pays base and creator taxes but is exempt from the five-second launch surcharge. It can distribute to at most ten recipients including the buyer; shares total 10,000 bps and rounding remainder goes to the buyer. ERC-20 funding approval can be a separate wallet operation.