Cryptographically proven draws

EntropyDraw

Draws by numeric range or name list, publishing verifiable data to inspect and confirm every result.

Access EntropyDraw Understand the modes

EntropyDraw — Cryptographically verifiable draws and public beacon auditing

Two draw modes

For casual choices

Instant mode

Fast and fully reproducible. The outcome is deterministic based on the public inputs of the draw — set by whoever initiates it. Recommended for casual selections.

For contests and prizes

Auditable mode

Locks the range or name list and awaits a future round from the public drand network before calculating the outcome. As a result, the outcome does not yet exist at the moment of locking. Use when pre-draw unpredictability is essential.

Public verification

Every draw publishes SHA-256 hashes, input parameters, timestamp, result, and a permanent verification URL with a QR code. Rejection sampling prevents modulo bias.

Audit Articles & Guides

Detailed guides explain how to verify a draw, inspect SHA-256 hashes, and choose between instant draws and public randomness beacons.

View audit guides

Philosophical connection: Chance, determinism, and the human search for mathematical truth connect the engineering rigor of EntropyDraw to classic reflections cataloged on WebSofia.