GlossaryAdvanced
Checksum Address
A wallet address format with built-in error detection using mixed letter case.
A checksum address is a wallet address format that encodes error-detection information, commonly through a specific pattern of uppercase and lowercase letters, letting software automatically detect many common typing or copying mistakes before a transaction is sent.
This provides an additional, automatic layer of protection against accidentally sending funds to a mistyped or corrupted address, on top of manually double-checking an address.
Examples
- A wallet might reject an address with an invalid checksum, catching a likely typo before funds are sent.
- Checksum encoding uses letter case as a built-in error-detection mechanism within the address itself.