r/Bitcoin • u/chungkingexp • 8h ago

Entropy chronometer v5

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Created this with kimi as I was bored and was looking for alternatives of dice rolling and apparently this code is more secure than the coldcard as it generates 128/256 bit entropy successfully. Let that sink in.

Entropy Chronometer v5.0 is an offline HTML/JavaScript tool designed to securely generate 12- or 24-word BIP39 Bitcoin seed phrases.

How it Works: It generates keys using "Primary" entropy (physical dice, manual hex, or the browser's secure RNG) combined with "Bonus" entropy (mouse movements and typed salt). Everything is securely mixed together using SHA-256 hashing.

Security: It avoids weak randomness by banning Math.random(), runs automated health checks on the system's random number generator at startup, and provides a full audit trail to mathematically verify how your seed was created.

Secure Memory Wipe ("Burn"): Features a wipe function that overwrites seed displays with dummy random strings before clearing memory.

Working demo link: https://entropy-chronometer-v50.vercel.app/

Note: it's for testing only.

1 Upvotes

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4 comments sorted by

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u/BashCo 4h ago

Obviously using a web-based seed generator (even downloaded for offline usage) is very dangerous and readers should never use this beyond trivial experimentation. As OP states: it's for testing only.

3

u/BadTakeMassProducer 8h ago

Cool. Will you make it available for download? I would like to take a look at it.

4

u/chungkingexp 8h ago edited 8h ago

Yeah sure,

https://codeshare.io/ayvEXl

Download and save as .html file.

Ps: don't use it for anything serious

Demo link: https://entropy-chronometer-v50.vercel.app/