https://developer.bitcoin.org/reference/rpc/validateaddress.html
validateaddress — Bitcoin
This site aims to provide the docs you need to understand Bitcoin and start building Bitcoin-based applications.
validateaddressbitcoin
https://chainquery.com/rpc/validateaddress
validateaddress, Bitcoin Core RPC, ChainQuery.com
returns information about the given Bitcoin address.
bitcoin corevalidateaddressrpc