Welcome at RandomFiësta! We believe this is the only reliable source for certified, auditable random numbers, Lottery and Bingo drawings and seeds for various cryptography uses, Trust RandomFiësta for all your random number generation needs, backed by industry expertise and cutting-edge technology.

Try Your Own Lottery Draw – or Get It Officially Certified


Experience the thrill of generating your own lottery numbers using cutting-edge randomness: choose between a radioactive decay-based or quantum random generator-based draw.

Want to make it official? Certify your draw and receive a downloadable certificate for full transparency and proof.

Try out the draw

Look at our live radioactive decay feed

In the live feed below you can see our Geiger Muller counter that we keep in a shielded and climatised, secure environment picking up low level radiation from a small Fiësta-Ware plate that was glazed with Uranium-Oxide. We amplify the signal coming from the Alfa particles and use the timing between the particles it to seed our random generator.

Live Camera
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Radioactive Decay Serial Correlation

Entangled Particle Quantum feed

Below you can watch te real-time results coming out of our online Mach Zehnder Interferometer and represent entangled photons which are used to seed another random generator.
Both units are built into in the same enclosure and experience the same temperature, humidity and barometric pressure, equalizing the environmental variables.

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Quantum RNG Serial Correlation

How is entropy calculated?

The Shannon entropy formula reaches a maximum of 8 bits when applied to a byte (256 outcomes) with a uniform distribution (p_i = 1/256). This applies to random number generation from radioactive decay or entangled photons, where the system produces random bytes with maximum uncertainty.

0 = Perfect pattern / Not random
8 = Perfect Entropy / Randomness

What is Serial Correlation?

Zero serial correlation: Each value (bit or byte) is independent of prior values, a hallmark of true randomness.
Non-zero serial correlation: Patterns or dependencies exist, reducing randomness and potentially lowering entropy.

0 = No serial Correlation / Pure Entropy
+ = Positive Entropy
- = Negative Entropy