Tool
Validate Ethereum address format and verify EIP-55 checksum compliance. Prevent transaction errors with instant address verification.
Format Validation
Verify proper Ethereum address format and length requirements
EIP-55 Checksum
Validate and convert addresses to proper checksum format
Error Prevention
Prevent transaction errors by validating addresses before use
Ethereum Address Validator
Validate Ethereum address format and EIP-55 checksum
Example Addresses
0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed0x5aaeb6053f3e94c9b9a09f33669435e7ef1beaed0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAePremium Vanity AddressesReady Now
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ZK Generation
Keys encrypted at all times during generation. Zero-knowledge architecture ensures maximum security.
Everything Automated
No human in the loop, nobody touches the keys. Fully automated secure delivery system.
Collector-Grade Rarity
Hand-picked patterns: lucky numbers, word formations, and mathematical sequences.
Burn on Read
0 data retention. Private keys are permanently destroyed after secure delivery.
Understanding EIP-55 Checksum
What is EIP-55?
EIP-55 (Ethereum Improvement Proposal 55) is a standard that adds a checksum to Ethereum addresses using mixed-case hexadecimal encoding.
The checksum is computed by taking the Keccak-256 hash of the lowercase address and capitalizing letters whose corresponding hash digit is ≥ 8.
This prevents many common transcription errors and makes addresses self-validating.
Examples
0x5aAeb6053F3E94C9b9A09f33669435E7Ef1BeAed0x5aaeb6053f3e94c9b9a09f33669435e7ef1beaed0x5aAeb6053f3E94C9b9A09f33669435E7Ef1BeAedWhy Validate Addresses?
Benefits
- Prevent Loss: Avoid sending funds to invalid addresses
- Error Detection: Catch typos before transactions
- Standard Compliance: Ensure addresses follow EIP-55
- Development Safety: Validate addresses in smart contracts
Common Use Cases
Technical Implementation
Validation Process
EIP-55 Algorithm
// Pseudo-code for EIP-55 checksum validation
function validateChecksum(address) {
const addr = address.slice(2).toLowerCase();
const hash = keccak256(addr);
for (let i = 0; i < addr.length; i++) {
if (parseInt(hash[i], 16) >= 8) {
if (address[i + 2] !== addr[i].toUpperCase()) {
return false; // Invalid checksum
}
} else {
if (address[i + 2] !== addr[i].toLowerCase()) {
return false; // Invalid checksum
}
}
}
return true; // Valid checksum
}Frequently Asked Questions
What happens if I use a non-checksummed address?
Non-checksummed addresses are still valid and will work for transactions. However, they don't provide error detection benefits and some applications may reject them or warn users.
Can I convert any Ethereum address to checksum format?
Yes, any valid Ethereum address can be converted to EIP-55 checksum format. Our tool automatically provides the checksummed version when you validate an address.
Are uppercase and lowercase addresses different?
No, Ethereum addresses are case-insensitive for transaction purposes. However, the mixed case in EIP-55 serves as a checksum to detect errors.
Do all wallets support EIP-55 addresses?
Most modern wallets and applications support EIP-55 checksummed addresses. Some older systems might not validate the checksum but will still accept the address.