Delivering an Earth-Shattering Discovery?

An anonymous reader asks: "Just for fun... suppose you've made an Earth-shattering discovery that, when revealed, will cause massive social upheaval. Maybe you've discovered a new energy source or weapon, or figured out how to factor large primes in seconds, or learned how to time travel back in time and affect the present. Being a nice guy, you decide to warn the world now and give everybody a few years to prepare before revealing the discovery. How can you absolutely encrypt or otherwise protect your discovery, but guarantee its revealing at a certain future date even if you and everybody you know is long gone? For example, could you bounce an electromagnetic signal describing the discovery off a celestial body several light-years away?"

Comments

if it is prime,

[Valar]

it is a product of one and itself. What you mean is factor composites into primes. Either that or you know something I don't ;).

If you discover time traven dont tell ANYONE!

[HanzoSan]

Thats the best solution.
Do you really believe your government will use this to help you?

Do you want to see time warfare? Do you want the government to control the past and future?

Dont release devices which humanity is not responsible enough to handle. We can barely handle nuclear power and computers how the hell are we supposed to handle time travel?