I feel like most of the people (Loud Whispers excluded) here forget that you have to prove that your cure actually cures cancer before anyone believes a word out of your damn mouth.
Completely irrelevant to the primary reason you immediately back up and disseminate the information necessary to create the cure to as many places as possible, in whatever format is easiest to continue to propagate. Point of as immediate as possible and public publishing is entirely so there's little to no chance mankind
loses it. You can work out the rest of it once it's in several dozen different servers and it's not going to functionally disappear if you get hit by a truck or some shit while you're working on whatever step 3 is.
Seriously, most of the folks talking about trials and testing appear to be forgetting they're holding a cure to goddamn cancer in their hands in this scenario, and so far as they're aware the sole copy thereof. You don't squirrel that shit away while you're trying to convince people it works, you make as many copies as you can and put them in as many places as you can and worry about the rest once losing the original doesn't mean losing it entirely. You can't convince friggin' anyone you have a cure if the information burns up in a house fire and whatever physical backups you have go to pot for whatever reason. One backup isn't enough for something like that. Several isn't, either. Several
dozen spread across the globe and you're getting where you probably should be for something that important.