> ## Documentation Index
> Fetch the complete documentation index at: https://tonch.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Launching a Jetton

> What you need before launching a tonch Jetton, what gets deployed, and what to expect after the transaction lands.

Launching a Jetton on tonch is a single TonConnect signature. The launch transaction deploys two contracts (a TEP-74 Jetton master + a per-launch bonding curve), mints the supply, and registers the launch with the factory — all in one transaction.

This page covers the full pre-flight and what to expect. The next two pages walk through the launch form fields and the optional dev-buy.

## Pre-flight checklist

Before you click **Launch on TON**, make sure you have:

* A TON wallet with **at least 4 TON** (3 TON launch fee + \~0.5 TON gas + a small buffer).
* A **square image URL** that wallets and explorers can fetch — usually 256×256 or 512×512 PNG/JPEG. Hosted on a CDN, your own domain, or a service like ImgBB. Don't use a Telegram link (rate-limited and blocked by some explorers).
* A **clear name and symbol**:
  * Name: 1–32 characters, any text.
  * Symbol: 1–12 characters, A–Z and 0–9 only (the form auto-uppercases and strips other characters).
* Optional: a **description** (shown on the token page and in some wallets), and **website / Telegram / X** links.
* Optional: a **dev-buy size** in TON if you want to be the first buyer on your own curve.

## What gets deployed

A single launch transaction deploys these contracts:

1. **TEP-74 Jetton master** — the standard TON Jetton contract. Holds total supply, mints to wallets via the standard transfer flow. Owned by the factory at first; ownership is renounced after the initial supply mint.
2. **Bonding curve sale contract** — per-launch contract that holds the for-sale TON and Jetton reserves. Receives buys and sells until graduation, then triggers the DeDust migration.
3. **LP locker** (one per launch) — the write-only sink that holds LP Jettons after graduation.

The 1B token total supply is split:

| Allocation      | Amount            | Where it goes at deploy                                   |
| --------------- | ----------------- | --------------------------------------------------------- |
| For-sale supply | 800,000,000 (80%) | Curve's Jetton wallet, sold via buys                      |
| AMM reserve     | 200,000,000 (20%) | Curve's Jetton wallet, held until graduation seeds DeDust |
| Total           | 1,000,000,000     |                                                           |

There is **no creator allocation**. The deployer's only way to acquire tokens is to dev-buy at launch or buy on the curve like everyone else.

## What happens after you click Launch

1. **Address derivation.** The frontend computes the future Jetton master address using your token metadata + the standard Jetton master code. This is needed to set up the DeDust per-Jetton vault.
2. **DeDust vault resolution.** The frontend asynchronously looks up the DeDust v2 native + Jetton vaults that will be used at graduation, and packs their addresses into the launch payload.
3. **TonConnect signing prompt.** Your wallet shows the destination (the factory address), the value (3.5 TON: 3 TON fee + 0.5 TON gas), and the payload. Review and approve.
4. **On-chain deploy.** The factory receives the message, deploys the curve and Jetton master contracts, mints supply, and emits a `TokenLaunched` external-out log.
5. **Indexer pickup.** The tonch indexer polls the factory's outbound messages every 3 seconds. Your token appears in the API and the homepage **Live launches** strip within \~30 seconds.
6. **Token detail page renders.** Once indexed, your token's page is live at `tonch.app/token/<curve_address>`. Share the URL — that's where buyers will trade.

## What if it fails

If the transaction is rejected or stalls:

* **Wallet rejected:** your wallet's review screen flagged something. Check the destination address (should be the factory) and the value (3.5 TON). If those look right, try again or switch wallets.
* **TonConnect timeout:** your wallet didn't respond in time. Re-open the modal and re-sign.
* **Tx sent but token doesn't appear:** the indexer is a few seconds behind chain. Wait \~60 seconds and refresh. If it still doesn't appear after 5 minutes, check the deployer wallet's transaction history on Tonviewer to confirm the launch tx actually succeeded.
* **Tx reverted on chain:** rare, usually only if the factory rejects the metadata format. Check the launch fee was 3 TON (or the current configured fee — see [Reference / Contracts](/reference/contracts)).

The 3 TON launch fee is **not refunded** if the transaction reverts after the factory accepts it. If the wallet refuses to sign or the tx never lands, no funds move.