Life & fun · February 12, 2026
Double blind entropy using Drand for verifiably fair randomness
The only way to get a trust-less random value is to have it distributed and time-locked three ways, player, server and a future-entropy. In the demo above, the moment you commit (Roll-Dice) a commit with the hash of a player secret is sent to the server and the server accepts that and sends back the hash of its secret back and the "future" drand round number at which the randomness will resolve. The future used in the demo is 10 secs When the reveal happens (after drand's particular round) all the secrets are revealed and the random number is generated using…
In plain words
This tool generates verifiably fair random numbers using a three-way commitment system: a player secret, a server secret, and a time-locked future entropy value from Drand. Users commit to their choice by submitting a hashed secret, the server responds with its own hashed secret and a future Drand round number, and after that round concludes, all secrets are revealed to cryptographically produce a tamper-proof random result. It is designed for anyone needing trustless randomness in gaming or applications where fairness cannot depend on any single party.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
The only way to get a trust-less random value is to have it distributed and time-locked three ways, player, server and a future-entropy. In the demo above, the moment you commit (Roll-Dice) a commit with the hash of a player secret is sent to the server and the server accepts that and sends back the hash of its secret back and the "future" drand round number at which the randomness will resolve. The future used in the demo is 10 secs When the reveal happens (after drand's particular round) all the secrets are revealed and the random number is generated using "player-seed:server-seed:drand-signature". All the verification is in Math, so truly trust-less, so: 1. Player-Seed should matches the player-hash committed 2. Server-Seed should matches the server-hash committed 3. Drand-Signature can is publicly not available at the time of commit and is available at the time of reveal. (Time-Locked) 4. Random number generated is deterministic after the event and unknown and unpredictably before the event. 5. No party can influence the final outcome, specially no "last-look" advantange for anyone. I think this should be used in all games, online lottery/gambling and other systems which want to be fair by design not by trust.
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