Address Tools
Runs offlineChecksum, validate and inspect any Ethereum, Bitcoin or Solana address.
About address tools
An EVM address is twenty bytes of hex, and EIP-55 adds a checksum by capitalising certain letters. That checksum is the only thing standing between a mistyped character and a permanent loss, so a mixed-case address that fails its checksum is a genuine red flag rather than a formatting quirk. Solana addresses work differently: thirty-two bytes of base58, case-sensitive, with no checksum at all — which is why you compare them character by character. Bitcoin sits in between: every form carries a checksum, whether the legacy base58check of a 1 or 3 address or the bech32 of a bc1 one, so a mistyped character is caught before the money moves. This tool tells you which kind you have and whether it is sound.