reports of bitcoiners getting emails from #coinkite regarding the #coldcard incident WARN: this could be a #phishing campaign Do not click links, be paranoid threat actors could easily have gotten gour email from orher leaks, dara brokering, and so targetting you indiscrimantly to phish

Why is #entropy important in #cryptography ? check this webpage: https://keys.lol Very simple example of why you need 'pure' randomness to generate entropy... "How does this work? A private key is basically just a number between 1 and 2256. This website generates keys for all of those numbers, spread out over pages of 128 keys each. This website doesn't actually have a database of all private keys, that would take an impossible amount of disk space. Instead, keys are procedurally generated on the fly when a page is opened. The page number is used to calculate which keys should be on that page. Finding an active wallet is hard, but not impossible. Every time you open a random page, you have a chance of finding someone else's fortune." #coldcard #RNG #bug #bitcoin

hey @WalletScrutiny, maybe worth updating the coldcard listings on the dashboard?

WalletScrutiny

Know your wallet like you built it.

Not everyone is a developer. Not everyone has to be.

10,000 satoshi #meme #bounty Seeking the best meme relating to the #ColdCard #RNG bug that just wiped out some plebs whole stack today (31 july) Dont just steal, make some art and post it as comment to this note. winner selected on 5th August and will request an LN invoice. Tragedy sucks, memes are forever

"And be sure to use AI when working on your next book or essay or piece of art or photography, and then smile or even laugh at your own cleverness when you see how good it is, and how easy, because who the hell has time to work at something, to give time to craft, to create with their own minds, to spend years being mediocre. Why do that when mastery, or at least competency is so simple only a good prompt away?" - View quoted note →

#sandbattery #innovation - ported from reddit: This new facility can hold 100 MWh for about a month in summer and a week in winter. That's enough for the town of 5000 local residents. TechCrunch estimates the Finnish battery's costs are under $25 per kilowatt-hour, compared to around $115 for leading lithium-ion batteries. 90% efficiency. It doesn't use any "rare earths" or critical materials. Instead using locally sourced, recyclable materials. Units are scalable and modular to fit different needs and uses. Suits small towns (like the current facility) and large scale industrial uses. 13 meters tall and 15 meters wide. Independent of geography. No supply issues due to any geo-political problems. Designed to store energy when it's cheap and plentiful and supply when it's expensive.

Sand batteries are a significant advancement in clean energy technology.

This month, Finland launched the world

Polar Night Energy

Sand Battery

The Sand Battery is a large-scale, high-temperature thermal energy storage system that uses sand or similar materials as its storage medium. It ena...

sauce: /r/Futurology/comments/1v8vnig/finland_builds_the_worlds_largest_sand_battery/