You do not notice this, you do not need to enter your private key, but just enter a bitcoin address, and if the private key for that address exists in our database, it will show you otherwise, something to display Does not exist
And from where do you get those private-keys? If that's the case, your website is pretty much useless since there are 2^160 possibilities of Bitcoin addresses and you only have 24,363,716 addresses stored in your database.
Please note that none of the addresses you are looking are not stored in server and all of it in client-side search operations are done.
How is this a client-side if the address is being sent to a page called "search_api.php"?
yes True, 2^160 possibilities of Bitcoin addresses, We are also in the warehouse for storing them using the technology of the day,
We only have two days to start our work and need a lot of storage equipment
about send it to "search_api.php", it just search it in Database, not another
It's normal to call it to search the database or use its data
Remember we use Address, and address is a Public case,
Are you personally afraid I have your bitcoin address while I have no information about your private key?