Validate an Address using the Public Key

[c4b4d4]

I'm working on a project that uses this library and I'm looking to verify if an Address belongs to a Public Key.

Is this possible with the library? Is this even possible with Cardano?

I could easily do this using the Private Key, but validation is being done on the server-side and I don't want in any way to send the Private Key over the Network in any kind of way.

So how could I know if a pair of Address+Public Key belong together.

[SebastienGllmt]

Just hash the public key and then check if any address has the public key hash as the payment credential (tools like cardano-db-sync provide a payment_cred field for this)
You can look at the address spec in Cardano (cardano-foundation/CIPs#78) to see how to get the payment credential for an address if you're looking to match a specific address.

[c4b4d4]

Just hash the public key and then check if any address has the public key hash as the payment credential (tools like cardano-db-sync provide a payment_cred field for this)
You can look at the address spec in Cardano (cardano-foundation/CIPs#78) to see how to get the payment credential for an address if you're looking to match a specific address.

My problem is, this validation needs to happen as well on addresses that have not made a single payment yet on the blockchain. (Newly created addresses).

Already tried to match the Public.hash() with anything available from the BaseAddress, but no luck on finding a validation.