Four.meme BSC Launch

Sumo supports Four.meme BSC launches on BNB Smart Chain. Four.meme is not a Uniswap-style pool launch: Sumo obtains the create transaction through the Four.meme API, predicts the token address, builds bundle buys against the Four.meme curve, and submits the launch atomically through BSC bundle builders.

Prerequisites

Before launching, make sure you have:

1. Token metadata ready: name, ticker, image, description, and social links
2. BNB for token creation, dev buy, bundle buys, gas reserves, and bundle priority fee
3. A launch plan: target supply control, dev buy, bundle wallet count, and optional tax settings
4. A wallet plan: use ready wallets from private keys, Wallet Farm, or another profile, or create new BSC wallets / buy aged BSC wallets through Wallet Marketplace during the wizard

Launch Flow

1. Info

Choose Four.meme BSC in the Launchpad field, then enter the token and profile details.

Total supply and decimals are fixed by Four.meme and are not edited in the standard Sumo flow.

2. Buy Mode

Four.meme uses BNB buy planning against the Four.meme curve.

Launch mode

The mode and the quote asset are fixed once the draft is saved; start a new draft to change them.

Graduation Bundle

A Graduation Bundle turns one BSC block into the whole life of the curve: create, buy it out, migrate, and buy back from the pair.

• The token must be a tax token. Selecting Graduation Bundle turns Tax Controls on and locks the switch, and the API refuses a graduation draft without it. Only a taxed (Token8) Four.meme token runs TradeStop and the PancakeSwap V2 migration inside the buy that completes the curve; an untaxed token sells its curve out and waits for Four.meme's operator to migrate it minutes later, which would leave the Post-Graduation Wallets with no pair to buy from in the same block. The fee presets and the tax split stay yours to set.
• The curve leg is fixed at 80%. Dev buy plus every bundle wallet always sums to Four.meme's full maxOffers (800M of the 1B supply). The Bundle Buy field is derived: 80% minus the dev buy.
• The last bundle wallet is the crossing wallet. It targets whatever offers are left rather than a fixed share, because that is what TokenManager2 fills before it stops trading. Sumo funds it with 2% extra so it still passes the launch-time balance check if the earlier legs over-deliver slightly; Four.meme fills only to the cap and refunds the rest in the same transaction. The crossing wallet must keep a floor of its own — 0.41% of supply on BNB and stablecoin quotes, 1.21% on a tokenized stock — which is why the Dev Buy ceiling drops in this mode. That floor is not protection against outside buyers: if someone else's buy lands before the crossing, the launch still migrates, the crossing wallet just receives less than it planned for.
• Post-Graduation Buy is everything above 80%. The Supply Control Target runs from 80% + 0.01% per Post-Graduation Wallet up to 99%, and the difference is split across the Post-Graduation Wallets. They buy from the migrated pair, which receives 98% of the raise (Four.meme keeps 2% as its migration fee), the liquidity-directed share of accrued curve buy tax, and the unsold token seed. When tax is directed to liquidity, that token seed is slightly below 200M and funding estimates include a margin for the adjustment. Recipient-only tax keeps the nominal seed. Those buys pay the pair's 0.25% fee, and the token's buy tax—always on in this mode—is skimmed from the pair's output as well. Although the controls allow 99%, tax can make targets near that limit unreachable; the launch planner rejects those targets.
• Bundle and Post-Graduation Wallets share one budget. The quote asset's gas class sets it — 48 on BNB, 40 on a stablecoin, 30 on a tokenized stock — and the two counts must add up to at most that. Raising one lowers the other's ceiling.
• On an ERC-20 quote the crossing headroom comes back as the quote token. Four.meme's Helper swaps the whole funded BNB into the raised token and the manager pulls only what the curve still needs, so the leftover stays in the crossing wallet as the stock or stablecoin, not as BNB. The Funding table's tooltip on that row says roughly how much.
• Post-launch cleanup. Token Transfer is available after either launch mode, including before migration. Sell / Buy requires a Graduation Bundle that migrated. See Holder cleanup below.
• If the crossing completes the sale without migrating (for example the migration ran out of gas), the profile activates on the curve and Sumo notifies you that the sale is complete and awaiting Four.meme's migration. Four.meme's operator migrates the token to PancakeSwap shortly after; curve buys revert until then, and the profile moves to the pair automatically once the migration lands.

Holder cleanup

After the bundle lands, Sumo can move the controlled supply out of the launch wallets and into fresh holder wallets, so the token's holder list does not read as a handful of bundle addresses. Pick the method with the Token Cleanup Method selector in Buy Setup.

Available in both launch modes. Bundle mode offers Off and Token Transfer; transfers can run after confirmation while the token is still on the curve. Graduation Bundle adds Sell / Buy, which needs the migrated PancakeSwap pair. If graduation does not complete, Token Transfer still runs, while Sell / Buy is skipped with a notification. Switching back to Bundle mode preserves cleanup as Token Transfer. New Bundle drafts default to Off.

The tax is paid on every pair leg. A Graduation Bundle is always a tax token, and the Token8 tax is skimmed on the base side of a pair trade — so Sell / Buy pays the pair's 0.25% fee plus the sell tax on the way out and the pair fee plus the buy tax on the way back in. At the default 5% presets that is roughly 10.5% of the redistributed supply, on top of price impact. The Buy Setup summary shows the result as Final Supply Control next to the initial target. Token Transfer pays no pair fee and no tax, because the token's tax applies to pair trades, not to a plain wallet transfer.

Sources follow the launch mode. Cleanup redistributes from the bundle wallets and, for a Graduation Bundle, the Post-Graduation Wallets, so the holder count must be at least one holder per source wallet and at most 100 per source wallet, up to 400 holders in total. Injection wallets take no part in cleanup.

Quote asset

A Four.meme curve is priced in one raised token — the asset every buy pays into. Sumo offers the presets Four.meme publishes as launchable:

Launch wallets stay funded in BNB for every quote. On an ERC-20 quote each buy goes through Four.meme's Helper, which swaps BNB into the raised token on the way in, so no wallet ever has to hold the stock or stablecoin. Sumo reads the live BNB-to-quote rate to size each wallet: while it is loading the BNB requirement reads "Quoting"; if it cannot be priced, the launch cannot be sized and the draft is refused.

Two things change on an ERC-20 quote:

• The dev buy becomes its own transaction. The create carries no pre-sale, and the dev wallet buys immediately after it, so the dev wallet keeps gas for that buy on top of its deploy reserve.
• The bundle is smaller. Each hop buy costs more gas than a native curve buy, so the wallet budget follows the quote: 48 wallets on BNB, 40 on a stablecoin, 30 on a tokenized stock. Lowering the budget re-clamps the Bundle Wallets count.

The quote asset is fixed once the draft is saved; start a new draft to change it.

Tax Controls

Four.meme tax settings are different from the shared Uniswap-style tax contract.

The four split rates must add up to 100%. In the wizard, liquidity rate is derived from the other three values.

3. Wallets

Add, import, or generate wallets for each required BSC role.

You can use ready wallets, create new wallets, or buy aged wallets at this step. Ready-wallet paths include importing private keys, pulling wallets from Wallet Farm, or reusing wallets from another profile. Additional paths include creating new wallets or buying aged inventory from Wallet Marketplace.

Sniper wallets are not used by Four.meme BSC launches, and holder wallets appear in either mode with holder cleanup enabled.

4. Funding

Save the draft before funding. Sumo uploads the image to Four.meme when needed and stores the Four.meme image URL on the launch draft.

The funding table tracks BNB requirements for token creation, dev buy, bundle buys, gas reserves, and BSC bundle priority fee. With Sell / Buy holder cleanup it also carries one fixed BNB row per holder wallet for its cleanup buy. If CEX funding is enabled, deposit the estimated BNB into the funding wallet and use Fund to distribute it through Husher. If CEX funding is disabled, fund the dev and bundle wallets directly and use Check Balances.

5. Strategies

Optionally add starter strategies to the profile before launch. You can configure Counter Trade, DCA, and Limit Order strategies by hand, or apply a strategy preset: Sumo ships built-in Hyped, Standard, and Staircase presets, and your org can save its own presets for reuse across launches and imports. Strategies are saved with the draft and can be reviewed after the token is live.

6. Launch Preview

The preview shows:

• Four.meme metadata and uploaded image status
• Predicted token address
• Dev and bundle wallet counts
• BNB funding rows
• Supply split across dev and bundle buys
• Optional tax configuration and tax wallet

When launched, Sumo builds the Four.meme create transaction, appends bundle buys, simulates the BSC bundle, submits it to supported BSC builders, and confirms the landed transactions on-chain.

After Launch

When the bundle lands, the profile becomes active and opens in Live Trading. Four.meme profiles use the Four.meme connector for quotes, trades, migration progress, and post-launch spot-price data.

Launch Logs

Four.meme profiles add a Launch Logs tab for metadata upload, create transaction preparation, bundle simulation, bundle submission, and confirmation.

Further Reading

• What Are Memecoin Bonding Curves? — this launchpad's curve overlaid on every other supported launchpad, with graduation math
• How Much Does It Cost to Launch a Memecoin? — simulate launch cost, starting market cap, and supply held for this launchpad