GALABET FAIR / A measured roll

Dice.

Choose a target. Roll a number between 0.00 and 100.00. Follow it back through the fraction, the bytes and the original inputs.

Interactive public-seed demonstration

A fox technician compares a result receipt with a calibrated measuring rail.

56.12

Target 50.00

0.00100.00

Target50.00

56.12 > 50.00 Target met

Read the calculation ↓Server demo ↓

Public inputs. Real calculations.
Each new example advances the nonce and runs @galabet/fair in your browser. Results are reproducible, and the seed is visible to everyone.

Client seed for the next exampleDisplayed result: galabet / nonce 42

Inspect this Dice result · nonce 42

THIS EXAMPLE / NONCE 42

Keep the inputs.
Check the result.

This demonstration uses a public server seed. Its record checks the calculation; it does not establish when a live service published a commitment.

Client seed: galabet
Fractions consumed: 1
Highest cursor: 0
Server seed commitment: ab37723062965715c5e6eeb54816f909a8e787bd3bfaee67a3cc0a3b90707de7

Open full verifier ↗

Revealed inputs and complete JSON

{
  "spec": "GFS/1.0",
  "profile": "single-player",
  "game": "dice",
  "params": {},
  "serverSeed": "5c1f7d3e8a2b4c6d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d",
  "clientSeed": "galabet",
  "nonce": 42,
  "commitment": "ab37723062965715c5e6eeb54816f909a8e787bd3bfaee67a3cc0a3b90707de7",
  "cursor": 0,
  "result": 56.12,
  "at": 0
}

FROM FOUR BYTES TO TWO DECIMALS

Where did
56.12 come from?

A screenshot preserves the roll. A completed record preserves the inputs needed to reproduce it. Both support and engineering can check the same calculation.

FIRST FOUR DIGEST BYTES

143168234224

143/256 + 168/256² + 234/256³ + 224/256⁴

0.5611712262…↓floor(f × 10001) / 10056.12

The target is a separate comparison.

“Over 50” requires a roll greater than 50.00. Exactly 50.00 does not meet that condition. Moving the target after a public example changes the comparison; it does not rewrite the recorded roll.

Dice displays values in hundredths from 0.00 through 100.00. Stakes, win conditions and payout rules belong to the application using the mapper.

THE BOUNDARY IN THE RULE

What happens
at exactly 50?

One hundredth is enough to change a strict comparison. The roll, target and direction belong together in the result you show a player—and in the record a support team reads later.

49.99Does not meet it

49.99 is below 50.00.

50.00Does not meet it

Equality is excluded in both directions.

50.01Meets the target

50.01 is above 50.00.

The amount returned includes the stake.

A winning 100-chip example returns 198 chips. Its net change is +98. A support record needs both figures, together with the target used when the round began.

The exact mapper gives this selection a 49.9950% chance under uniform 32-bit input. There are 10,001 displayed values, and 50.00 belongs to neither strict selection.

Example stake

EXAMPLE / WINNING ROUND: RETURNED
Original stake: 100 chips
Total return multiplier: 1.9801×
Returned after rounding: 198 chips
Net balance change: +98 chips
Calculation: floor(100 × 1.9801)

FOR A COMPLETED ROUND

Keep the original selection after the controls move. A receipt for “over 50” must not be relabelled “over 75” because someone changed the next bet. The fairness record reproduces the roll; the settlement fields explain the balance.

REFERENCE EXAMPLE / NONCE 42

Reproduce a support record in Node.js

Fox passing a seed capsule into the example

JavaScript · reference library

import { play } from '@galabet/fair';

// Public example inputs. Never publish an active server seed.
const seeds = {
  "serverSeed": "5c1f7d3e8a2b4c6d9e0f1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d",
  "clientSeed": "galabet",
  "nonce": 42
};

const { result, floats } = await play({ game: 'dice', ...seeds });
console.log({ fraction: floats[0], roll: result });

EXPECTED OUTPUT

fraction  0.5611712262034416
roll      56.12

Fox reading the reproduced result from a receipt

This snippet calculates a public example. In a real service, the active server seed stays on the server until it is safe to reveal.

OPTIONAL / SERVER SESSION

Try the chip demo.

The connected demo commits to a private server seed and maintains a virtual chip balance. Reveal a completed seed to check its rounds. It requires the Galabet demo API.