I have to laugh at those that won’t use eqsl or QRZ as they do not account for any confirmations. I mean an ARRL certificate is good for what?
ARRL has their own award system as does EQSL and QRZ. Each of those certificates will get you the exact same thing…not even a cup of coffee! LOL!!! I personally do not see a difference between how the confirmations occur. Both parties have to upload the contact…that creates the confirmation. None of the administering bodies actually confirm anything…well the ARRL will confirm paper cards if it is not conformed electronically.
For the record…I confirm all my sota contacts, as a chaser and activator, on QRZ, Eqsl and LoTW.