Bitcoin Seed Generator Entropy32 Plus Harnesses Radioactive Decay for True Randomness
A new open-source hardware project has surfaced as an innovative Bitcoin seed generator called Entropy32 Plus. This device relies on radioactive decay for true randomness, a physical process that produces unpredictable intervals between individual events.
The core idea behind this Bitcoin seed generator is to avoid the deterministic pattern of standard software-based random number generators, which produce identical output from identical inputs every time. Radioactive decay, on the other hand, occurs at quantum-mechanically random intervals that cannot be predicted in advance.
The Entropy32 Plus device uses a Geiger counter to detect each decay pulse from a radioactive or background source and converts it into a clean high or low reading using an LM393 comparator. The onboard firmware captures the timing gaps between successive pulses, which are then passed through a SHA-256 conditioning stage to whiten them and remove statistical bias.
The processed entropy is mapped onto words from the standard 2048-word BIP39 English list, generating a Bitcoin seed phrase. The entire process runs on a custom PCB built around an ATmega328P microcontroller, paired with a small OLED display and a button-driven interface for on-device operation.