pump.fun basics3 of 9
What is a CA in crypto?
CA stands for contract address: the unique address of a coin on its blockchain. Anyone can copy a coin's name and ticker. Nobody can copy its CA.
NTRNDMqQSiwEC2jJs3wJiZS6bpGYQJtMNQJgiX3WyV6
- 43characters
NTRN…WyV6what wallets showNTRNDMstarts with its ticker0 O I lnever in a CA
What does CA mean in crypto?
CA is short for contract address. It's where a coin lives on its blockchain, and it's how every wallet, exchange and chart site knows which coin you mean. You'll find it in a coin's X bio, its pinned post and its pump.fun page, and you'll see "CA?" in every group chat the moment a new coin comes up. "Drop the CA" means "post the address, so I buy the right coin".
On Solana, the precise name is the coin's mint address. "Contract address" comes from Ethereum, where every token is its own small program, called a contract. On Solana, one shared program makes every coin, and each coin's address is called its mint. People say CA anyway, and on Solana it means the mint address.
Why the CA matters more than the name
Stock tickers are unique because an exchange hands them out. There's one AAPL on Nasdaq, and nobody else gets to use it. Nobody hands out coin names. Anyone can launch a coin called notrandom with the ticker $NTRNDM, and nothing on pump.fun stops them.
Ticker: a nickname
- notrandom$NTRNDM
- notrandom$NTRNDM
- notrandom$NTRNDM
Anyone can use it.
CA: a serial number
NTRNDMqQSiwEC2jJs3wJiZS6bpGYQJtMNQJgiX3WyV6
One coin, for good.
Think of the ticker as a nickname and the CA as a serial number. Two coins can share a nickname. They can't share a serial number: once a coin exists at a CA, nobody can make another one there. That's why the CA is the first thing anyone asks for, and why copycats, called vamps, copy everything but the CA.
Read any CA
Paste a CA, or try an example. The reader checks it the way a wallet does, shows the short form wallets display, and compares it, character by character, with the CA you trust.
- 43 characters. Solana CAs run 32 to 44.
- Only CA characters: no
0,O,Iorl. - A valid Solana address.
- Wallets show it as
NTRN…WyV6. - Doesn't end in
pump: a custom CA, or a coin from somewhere other than pump.fun's create page.
Why most pump.fun CAs end in pump
pump.fun grinds its own CAs so they end in pump, and hands one to every coin made on its create page. The ending tells you a coin came from pump.fun. The rest is random, so every coin looks alike at a glance: 7Hq3…pump, 9xKe…pump, Fw2b…pump.
A custom CA swaps the random start for a word. $NTRNDM's starts with NTRNDM, DEEZ NUTS's reads DeEz…nuts, and holy shit's reads HoLy…Shit. Holders learn the word the way they learn the ticker, and a copycat's random CA gives it away. Here's how to get a custom CA on pump.fun, with or without pump at the end.
Where to find a coin's CA
- From the project itself: its X bio, its pinned post, its website. This is the one to trust.
- On pump.fun: in the coin page's web address, after
/coin/, and on the page, with a button to copy it. - On chart sites and explorers: in the coin's details. Search by name and you'll get many coins; search by CA and you'll get one.
- In your wallet: open the coin and look for its address in the details.
The addresses around a coin
A coin comes with a handful of addresses, and only one of them is the CA. Mixing them up is how people send SOL to the wrong place.
| Address | What it is | Send SOL to it? |
|---|---|---|
| Mint address (the CA) | The coin itself. | Never. |
| Bonding curve | The account holding the curve's SOL and unsold tokens, until the bonding curve fills. | Never. Buy through an app, which trades with the curve for you. |
| Pool | Where the coin trades once it graduates. | Never. |
| Creator wallet | The wallet that launched the coin. It earns the creator rewards. | Only to pay that person. |
| Your wallet address | Where your SOL and your coins live. | Yes. It's where you receive. |
Never send SOL to a CA. A CA is a coin, not a wallet, so in most cases nobody can send the SOL back.
How to check it's the real coin
- Copy the CA from the project's own channels. Its X bio, pinned post or website. Never from a reply, a DM or the top search result.
- Paste it, don't type it. One wrong character is a different address.
- Compare more than the ends. Lookalike CAs copy the start and end people check. Check a chunk of the middle too, or paste both into the reader above.
- Remember what a CA proves. It tells you which coin you're buying, not whether it's a good one. On pump.fun, buying with a slippage tolerance you understand is the next step.
Your coin's CA can read like its name, from the moment it launches. We find a CA that starts with your word by trying keys on GPUs until one fits, then you launch on pump.fun, the launchpad, with one wallet approval. Pick your word on the order form, and pick your coin's trading pair: SOL or another coin.
Questions
What does CA mean in crypto?
Contract address: the unique address of a coin on its blockchain. "Drop the CA" means "post the coin's address", so everyone buys the same coin.
Is a CA the same as a mint address?
On Solana, yes. A Solana coin's CA is its mint address, the account that defines the coin. "Contract address" is the Ethereum name, where every token is its own contract.
Can two coins have the same CA?
No. Each CA belongs to one coin, for good. Two coins can share a name and a ticker, which is why buyers check the CA.
Why do pump.fun CAs end in pump?
pump.fun grinds its own CAs so they end in pump, and hands one to every coin made on its create page. A custom CA starts with a word instead, with or without pump at the end.
Where do I find a coin's CA?
On its pump.fun page, in the web address after /coin/, and in your wallet's details for the coin. When you can, copy it from the project's own X bio or pinned post.
What happens if I send SOL to a CA?
In most cases, it's gone. A CA is a coin, not a wallet, so nobody can send the SOL back. Send SOL only to wallet addresses.
