Launch overview

Every launch on Archr produces the same on-chain shape, whether it was triggered from the site, Reddit, or X. This page covers what actually happens and what the caller-facing rules are. Site launches can also turn on Airdrop Mode to reserve part of the supply for another coin’s holders.

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What a launch produces

A single launch transaction does five things atomically:

1. Deploys a plain Coin with fixed supply 1,000,000,000e18 (1 billion, 18 decimals). See FAQ → what does a coin look like on-chain. The mint recipient is the launcher factory.
2. Escrows 5% of the supply (50,000,000 coins) into the on-chain TrancheEscrow in the same transaction. That pot funds the holder-rewards program for ARCHR holders and the coin’s own early buyers; the amounts and unlock times are fixed at launch and enforced by the contract.
3. Creates a Uniswap V4 pool for (native ETH, Coin) at an LP fee of 0 and tickSpacing 200, with the creator-reward hook attached. The pool is initialized at a launch tick derived from a target FDV in USD, read from the live Chainlink ETH/USD feed on 4663. For a plain launch the target is $1,662.
4. Adds the remaining 95% of the supply (950,000,000 coins) as single-sided liquidity: a sell wall spanning from just above the launch tick up to the top of the usable range. There is no ETH on the buy side at launch; buyers eat into the wall in order.
5. Emits a Launched event and mints the launch-wall LP position directly to the burn address 0x000000000000000000000000000000000000dEaD. The position is owned by no address, so nobody can withdraw or move it.

Trading is live the instant the transaction confirms, but the position cannot be withdrawn or moved by anyone.

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Fixed shape, not a bonding curve

Archr does not use a bonding curve. There is no “launch phase” that later graduates into a real AMM; a launch is the AMM going live. Pricing is standard Uniswap V4 concentrated-liquidity math from block one, so any tool that speaks V4 (aggregators, the swap widget on each coin’s page, direct router calls) can trade against the pool.

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Name and symbol rules

Both fields are sanitized before signing. The rules are the same on every trigger surface:

• Up to 32 characters each (the client sanitizer caps length).
• Letters, digits, and a small set of safe punctuation are allowed. Other characters are stripped.
• Whitespace is trimmed and collapsed.
• Empty name defaults to the symbol.

Names and symbols are not globally unique. Two different launches can each ship a PEPE, unless that ticker has been disabled; the unique identifier is always the deployed contract address, shown on the coin’s page and in the trigger reply.

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Disabled tickers

The factory keeps a registry of disabled tickers. A launch whose symbol is on it reverts; this is enforced by the contract. Matching is case-insensitive for standard symbols (letters and digits, 2 to 12 characters), so disabling PEPE also blocks pepe. ARCHR is disabled from day one. Tickers get onto the registry through OG protection and migrations; the tickers page also covers the registry’s honest limits (emoji and lookalike characters cannot be protected).

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Dedupe

Each trigger surface has its own dedupe key: Each key is enforced on-chain: a launch keyed to a value that has already produced a coin reverts AlreadyLaunched. On the bot-driven surfaces this is the crash-safety backstop for a lost or replayed trigger.

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The launch tick

The launch tick is where the sell wall starts: the lowest price at which coin can be bought. It is derived from a target initial fully-diluted valuation in USD, read live from the Chainlink ETH/USD feed on 4663, then snapped to a valid tick (a multiple of the pool’s tickSpacing = 200). Because the coin sorts above native ETH in the pool (ETH is currency0, the coin is currency1), the launch tick is a positive integer. For a plain launch the target FDV is **$1,662**. [Airdrop Mode](/launch/airdrop-mode) launches put a smaller share of supply in the pool, so their targets are higher ($5,567 and $19,200); the targets are set so the pool holds the same liquidity depth at every tier.

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Cost to launch

Every launch on Archr pays gas in native ETH on 4663. A typical launch is on the order of 0.005 to 0.01 ETH. There is no launch fee and no platform cut of the coin’s trading rewards: 100% of the pool’s 1% ETH skim is collectable to the coin’s recorded creator as ETH, and the contract has no function that routes it anywhere else. If you launch from the site with a non-zero dev-buy, add the ETH you are spending on that buy to the total. A plain Reddit or X launch costs you nothing. With the and buy suffix, the transaction is sent from your linked wallet, which pays the buy amount and the gas.

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What happens right after

The moment the transaction confirms:

• The coin’s contract is deployed at a deterministic address (CREATE2). The coin sorts above native ETH, so it is currency1 in the pool.
• The pool is initialized at the launch tick.
• 95% of the supply sits in the pool as single-sided liquidity; 5% sits in the escrow, unlocking on the holder-rewards schedule.
• The launch-wall LP position is owned by the burn address.
• The coin’s creator is recorded (site and user-linked launches record the launching wallet automatically; Reddit and X launches claim afterward).
• The swap widget on archr.win/token/<address> is live.

Traders can start buying immediately. See trading overview for the pool shape and slippage behavior.