This command is used to show an address on an external signer for verification purposes. It confirms that the provided address matches the one displayed by the external signer, ensuring its accuracy.

How is this used?

The walletdisplayaddress command is utilized to verify the authenticity of a Bitcoin address by displaying it on an external signer. This is particularly useful in scenarios where additional security measures are required, such as confirming the correctness of addresses before initiating transactions. By comparing the displayed address with the one provided, users can ensure that the address has not been tampered with and can proceed with confidence.