Next work-in-progress improvement to the SeedSigner image entropy flow: * FORCE the process to collect all 50 live preview frames (they're hashed in as additional entropy). * Make sure they're all unique. * Make sure they're not a blank color (all black, white, purple, etc).

As my image entropy writeup notes, the current implementation can skip past the live preview frames. They're meant to add some bulk to the input entropy on top of what the higher-res final image provides.

But the same reassurance has to be reiterated: Image entropy through EVERY historical release WORKS FINE as-is. As long as you can see whatever you're aiming at on screen (not blacked out, not blasted white), the camera is providing thousands of times more data than you need.

This PR is about going on the offensive: making image entropy more bulletproof. Your EYES are still the most valuable gatekeepers, but this builds considerable musclepower alongside you.

@SeedSigner This is good, like it. Several frames will harden the process and eliminate most possibilities of human flaw in capture

@SeedSigner Yep. Current process: works great, but someone determined to screw it up can. After my new PRs: sorry, you get millions of bits of entropy or we abort.

@SeedSigner Great common sense improvements! Bravo! 🙌

@SeedSigner Yeah, the analysis I did on the whole image entropy process was super useful to really probe the worst-case scenarios. This is the 2nd of 5 planned PRs to further harden the whole process. Really excited for it all to get rolled out!

@SeedSigner Very cool 😎🆒, Any news about the dice rolls? Could they be increased in

@sesi_the_man @SeedSigner Good content!

@SeedSigner that is cool 👍

@SeedSigner

@sesi_the_man @SeedSigner Good improvement, that was the biggest flag I noticed last week. And Thank you.

@sesi_the_man @SeedSigner It's weirdly exciting to close the door on these degenerate "you basically have to be TRYING to fuck up" corner cases.

@SeedSigner Amazing man! Thank for all the great work put on this!

@SeedSigner love it

@SeedSigner Awsome

@SeedSigner This is why open source matters. Bug found, raw captures published, fix already in progress. Try getting that from a closed-source wallet 🔥

@SeedSigner but it still all comes down to potential flaw(s) in sha256?

@SeedSigner Dice rolls (the way we and Coldcard and others implement it) requires two sha256 steps. Picking words out of a jar requires one sha256 step. Same for coin flips. There's no escaping it.

@SeedSigner 🔥🔥 leta go !!

@sesi_the_man @SeedSigner It should stop image entropy rather force the user to roll the dice 🎲 and bring their entropy. Bitcoins fundamental never trust anything only verify.

@sesi_the_man @SeedSigner The code is completely FOSS (and it's quite simple) so there is no trust, no magical RNG to depend on. The code absolutely needs lots of critical Team Red kind of eyes / AI on it. But it's about verifying the process. Not trust.