Do you get confused while managing multiple certificates? Not sure which CSR belongs to which certificate? Not sure which key belongs to which certificate? Well, we're here to soothe your pain. Running below OpenSSL commands in your system will tell you which CSR and Private Key corresponds to which cert. So, what are you waiting for? Run these OpenSSL commands in your system!
openssl pkey -in privateKey.key -pubout -outform pem | sha256sum
openssl x509 -in certificate.crt -pubkey -noout -outform pem | sha256sum
openssl req -in CSR.csr -pubkey -noout -outform pem | sha256sum