Total certainty will always be difficult, the CIA, the Cuban G2 and even Russian intelligence influenced to a greater or lesser extent... but Maduro doesn't offer any proof that says he won, on the other hand speaking with those inside they believe that he did lose, in addition to the large protests... in the same way: nothing changes, Maduro is in power and decides when to let him go
Conducting a survey on Nostr to analyze and verify the votes on the web would not help much, most of them are opponents of Maduro