Glossary
Bundle
A bundle is a group of transactions sent together so they execute in a fixed order, all of them or none. In a memecoin launch, bundling means sending the token’s creation and the creator’s buys from several wallets as one unit, so nobody else can trade between them.
How a bundle is built depends on the chain. On Solana it is an atomic bundle, a list of up to four or five transactions with a tip. On EVM chains there is no Jito, so the bundle lives inside one transaction that makes several calls, using EIP-7702 and ERC-4337.
A bundle is about how transactions are sent. It is not the same as a cluster, which is how a holder-map tool such as Bubblemaps groups wallets that sent funds to each other.
On Ballistic, bundled launches are called Block-0 launches.
Why all or none matters. A launch that lands half done can leave a token with no creator buy, or buys with no token. A bundle removes that case: either everything in it lands, in order, or nothing does.
What a bundle does not do. It does not set the price, the volume or what holders do next, and it does not hide anything: the transactions and the holders are on chain for anyone to read. How a bundle is built on each chain.
Questions
Is bundling the same as a sandwich attack?
No. A sandwich puts transactions around someone else’s trade. A bundle is a group the sender chooses to send together, here the creator’s own transactions.
Can you bundle without Jito?
On Solana a bundle goes through a relay. Ballistic’s default relay is Helius Sender. On EVM chains there is no Jito, so the bundling happens inside one transaction instead.
How many transactions fit in a bundle?
On Solana, four or five, depending on the relay: four on Ballistic’s default relay. On EVM chains the whole launch is one transaction.