Sending crypto to the wrong address is irreversible. Address verification is the most important step before any transaction.
Why Verification Matters
| Risk | How It Happens |
|---|
| Clipboard hijacking | Malware replaces copied address |
| Wrong address | You paste an old or incorrect address |
| Phishing site | Fake site shows scammer’s address |
| Typo | Manually typed address has an error |
| Address poisoning | Scammer sends dust to trick your history |
Verification Methods
| Method | Security |
|---|
| Check first 3 + last 3 characters | Low |
| Read address aloud | Low |
| Verify on hardware wallet screen | High |
| Use address book (whitelist) | High |
| Send small test transaction | Very high |
| QR code scan | Moderate |
| ENS/domain name | Moderate |
Hardware Wallet Verification
| Step | Action |
|---|
| 1 | Generate receive address on the device |
| 2 | Check the address on the device screen |
| 3 | Compare with what’s on your computer screen |
| 4 | Only confirm if they match exactly |
Never trust the address displayed on your computer alone. Malware can alter it.
The Test Transaction Method
| Step | Action |
|---|
| 1 | Send a small amount (1-5% of total) |
| 2 | Wait for confirmations |
| 3 | Verify the test arrived correctly |
| 4 | Send the remaining amount |
Test transactions add time but prevent catastrophic errors.
Address Whitelisting
| Feature | How It Works |
|---|
| Withdrawal address whitelisting | Only send to pre-approved addresses |
| 24-hour delay | New addresses take 24 hours to activate |
| Multi-factor confirmation | Requires 2FA for new addresses |
Most exchanges offer whitelisting — enable it.
Address Poisoning
| Attack | How It Works |
|---|
| Scammer sends tiny amount (dust) to your wallet | Your address book shows their address |
| Your transaction history shows their address | You might copy it by mistake |
| They use a vanity address similar to yours | First/last characters match |
Best Practices
| Practice | Why |
|---|
| Verify on hardware wallet screen | Malware can’t alter the device display |
| Use whitelisting on exchanges | Adds a delay for new addresses |
| Send test transactions for large amounts | Confirms the destination |
| Check the full address (not just first/last) | Avoids address poisoning |
| Use a fresh address for each transaction | Privacy and verification |
| Never copy and paste without checking | Clipboard hijacking is common |
ENS and Domain Names
| Service | How It Works |
|---|
| ENS (Ethereum Name Service) | vitalik.eth instead of 0x123… |
| Unstoppable Domains | Similar to ENS |
| DNS for crypto | Not standardised |
Domain names reduce errors but add a trust risk (the domain controller could change the address).
Bottom Line
Always verify a crypto address before sending. Use a hardware wallet screen to confirm the address. Send a test transaction for large amounts. Enable withdrawal whitelisting on exchanges. Check the full address, not just the first and last characters. Clipboard hijacking and address poisoning are real threats. A few extra seconds of verification can save you from losing your entire transaction.
This content is for educational purposes only. Not financial advice. Do your own research before investing.