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A recent hack drained millions from cold wallets — not because they were online, but because their "random" seed generator wasn't actually random. Our fix: 2048 individually printed word tiles. No chip, no firmware, no algorithm. Shake them in a jar. Pull your seed phrase by hand. Import it... show more
13,708 Aufrufe • vor 2 Monaten •via X (Twitter)
18 Kommentare
Make sure each time you pull, you put it back in before the next pull. 👍🏼
Cool. Could do the same thing with a printer, a sheet of paper, and a pair of scissors though.
I made a word picker about two years ago. It turns out that BIP-39 is a bit more complicated than that. There is a checksum involved. Long story short, I have a much better seed phrase generator now. Have a look!
Only 3 & 4-letter words? Nah. This is a good v0.1 but it can't be v1.0 yet, need to iterate a v0.2 that includes these words all the way up to 7-8 letters per word. 2048 is slim, need at least 16384 (if not 65536 or MORE, English vocab is HUGE). (+Microplastic is unhealthy.)
That spread thooo
Put them in a blender and pulse it to get the best mixing effect! j/k - Nice product! Maybe explain that BUTT isn't actually a seed word and you're only using the first four letters - so the word is actually BUTTER.
If you do that, you will lose your coins again
What if I take a large book like the dictionary or the bible, close my eyes, turn to 10 random pages and pick the 17th word I see from each page? I feel like that has a higher entropy rate.
🤣
Unfortunately, a lot of hardware wallet designers insist on supporting only the ill-designed BIP39 (or SLIP39) that require a "checksum" that has NO benefit and prevent people from easily make a mnemonic by explicit manual means. Abolish this checksum. Forward to HW makers.
This is the core issue most people ignore. Hardware wallets are only as strong as the entropy behind the seed. If the randomness is compromised, everything else collapses. Physical, offline generation still sets the highest bar for real self-custody.
@BitcoinBrabant
Interesting approach.. but how are you handling the BIP39 checksum? If all 12 or 24 words are selected randomly from the tiles, most generated phrases should fail checksum validation. Or should someone keep drawing until they happen to land on a valid phrase?
There's no reason to do all this. Just make a random number generator that grabs the last X digits of your system time, if it's not between the starting and ending numbers you assign, it tries again. In this case, last 4 digits between 1 and 2048. Happens only when you activate.
This slight reduces entropy as the word chosen can not be chosen again. Plus the last word is not the right checksum.
Put back the selected seed after each draw in the jar Repeat for 11 words (12-word seed) or 23 (24-word) Let SeedSigner calculate the final word (checksum)
Oh OK, so looks good!
NVK trying to reduce entropy:
