A crypto wallet address is a string of letters and numbers that others use to send you cryptocurrency — similar to an IBAN for a bank account. It is safe to share. It is derived from your public key, which in turn comes from your private key, but nobody can work backwards from the address to your private key.
Crypto transactions cannot be reversed. Sending to the wrong address or on the wrong network is one of the most common ways people lose money. This guide shows you what addresses look like and gives you a checklist to follow every time. To understand where your keys live, read hot vs cold wallets.
Key takeaways
- Your address is public and safe to share; your seed phrase and private key never are.
- Different blockchains use different address formats — and some formats are shared across many networks.
- Always check the network, not just the address, before sending.
- Send a small test first and compare the full address, not just the first and last characters.
Address, public key, private key and seed phrase
| Item | What it is | Share it? |
|---|---|---|
| Seed phrase | 12 or 24 words that can recreate all your keys | Never |
| Private key | Secret number that signs transactions | Never |
| Public key | Derived from the private key | Not needed |
| Address | Short form of the public key used to receive funds | Yes |
If anyone asks for your seed phrase — including «support staff» — it is a scam. Read our 12 rules for seed phrase security.
What addresses look like
Bitcoin
- bc1q… — native SegWit, the most common today, with lower fees.
- bc1p… — Taproot, the newest format.
- 3… — nested SegWit / multisig addresses.
- 1… — legacy addresses; still valid but more expensive to spend from.
Ethereum and EVM networks
Ethereum addresses start with 0x followed by 40 hexadecimal characters. The same address format is used on Ethereum-compatible networks such as Arbitrum, Optimism, Base, BNB Chain and Polygon. Your 0x address is the same on all of them — but the balances are completely separate.
Other networks
Solana addresses are long base-58 strings without a prefix; Tron addresses start with T. Some exchanges also require a memo or tag (for example for XRP, XLM or TON) to identify your account. Forgetting it can lead to lost or delayed funds.
Why the network matters
Because many networks share the same 0x address format, wallets and exchanges will happily accept a withdrawal to the right address on the wrong network. For example, USDT exists on Ethereum, Tron, Solana and others. If you withdraw USDT on one network to an exchange that only supports another, the funds may not arrive — and recovery, if possible at all, can take weeks and cost fees. Read more about stablecoins and their networks.
Rule: the network you select when sending must match the network the receiving wallet or exchange shows when you copy the deposit address.
A safe sending checklist
- Copy the address from the receiving wallet’s own «Receive» screen — never from an old transaction or a chat message.
- Choose the same network on both sides.
- Add the memo/tag if the receiving exchange requires one.
- Compare the full address character by character, or at least the first six and last six characters plus some in the middle.
- For large amounts, send a small test transaction first and confirm it arrived.
- Check the network fee and that you have enough of the native coin to pay it.
- On a hardware wallet, verify the address on the device’s screen, not just on your computer.
Address poisoning and clipboard malware
Two scams target addresses directly:
- Address poisoning: scammers send you a tiny or zero-value transaction from an address that starts and ends with the same characters as one you use often. Later you copy the wrong one from your history and send funds to the scammer.
- Clipboard hijackers: malware replaces any crypto address you copy with the attacker’s address. That is why you must check the pasted address, not just the copied one.
Use your wallet’s address book for regular recipients, keep your computer clean, and read our list of 15 common crypto scams.
Can I have more than one address?
Yes. Bitcoin wallets generate a new receiving address each time to improve privacy, and all of them belong to the same wallet. Ethereum wallets usually use one main address per account, but you can create as many accounts as you like from the same seed phrase. Using a separate address for risky activity, such as trying new DeFi apps, is a good habit.
Frequently asked questions
Can someone steal my crypto if they know my address?
No. An address only lets people send to you and see your balance and history on the public blockchain. Funds can only be moved with your private key.
What happens if I send crypto to the wrong address?
If the address is valid but belongs to someone else, the transaction cannot be reversed. You can only ask the owner to return it — if you can identify them. If you used the wrong network with an exchange, contact its support; recovery is sometimes possible.
Is my wallet address anonymous?
It is pseudonymous. It does not contain your name, but all transactions are public, and exchanges that verified your identity can link addresses to you.
Do addresses expire?
Blockchain addresses do not expire. Exchange deposit addresses can change, so always copy a fresh one before depositing.
Next step: choose between a hot and a cold wallet, or learn how to buy crypto safely.
