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Check if Address is a Valid Public Key

Validates if an address is a valid Ed25519 public key.

Returns: boolean - true if the address is a valid Ed25519 public key, false otherwise

const isValidPublicKey = connection.checkIfAddressIsPublicKey(address);

Parameters

  • address: Address - The address to validate

Examples

Check if an address is a valid public key:

const address = "GkFTrgp8FcCgkCZeKreKKVHLyzGV6eqBpDHxRzg1brRn";
const isValid = connection.checkIfAddressIsPublicKey(address);
console.log(`Address is valid public key: ${isValid}`);

Validate multiple addresses:

const addresses = [
  "GkFTrgp8FcCgkCZeKreKKVHLyzGV6eqBpDHxRzg1brRn", // Valid public key
  "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA", // Valid public key (program)
  "invalid-address", // Invalid
];
 
for (const address of addresses) {
  const isValid = connection.checkIfAddressIsPublicKey(address);
  console.log(`${address}: ${isValid ? 'Valid' : 'Invalid'} public key`);
}

Use in validation logic:

function validateWalletAddress(address: string): boolean {
  if (!connection.checkIfAddressIsPublicKey(address)) {
    throw new Error("Invalid wallet address: not a valid Ed25519 public key");
  }
  return true;
}
 
// Usage
try {
  validateWalletAddress(userInputAddress);
  console.log("Address is valid");
} catch (error) {
  console.error("Invalid address:", error.message);
}

See also

Last updated on
Check if Private Key Matches AddressCreate Wallet