3 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Address checksum (EIP-55). Address checksum for any EVM address: validates it and returns the EIP-55 checksummed form, saying whether the input was all lower case, all upper case, correctly checksummed or mixed case with...
Solana Program Derived Address (PDA) calculator — derive the canonical off-curve address and bump from bounded public seeds offline, without RPC or key handling.
Validates an EVM address and returns it in EIP-55 mixed-case checksum form. Catches typos before you send funds: an address that fails the checksum is almost always mistyped.