hotbits · radioactive entropy

Random, from radioactive decay.

A CAJOE Geiger counter, a Raspberry Pi, and a Δt₁/Δt₂ comparison turn cosmic noise into NIST-tested bits. Polls fast for the pool, slower for the labs.

See the entropy in 3D — rotatable point clouds
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Fresh pool
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Consumed
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Total bits
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Fails 24h
Statistical quality
waiting for first metric window…
NIST 800-90B continuous health
no continuous-health snapshot
Test battery · last 30
passanomalyfail
no battery history
/random/hex · live · refresh 4sstreaming
fetching entropy…
Build your own
CAJOE Geiger counter · Raspberry Pi 4 · Δt₁/Δt₂ comparison · SHA-256 conditioning