FairBit.bet
Verify the maths yourself. That is the whole pitch.
Most sites put "provably fair" in the footer and never explain it. We built one where
you can recompute every round you played and check it yourself, so here is exactly
how it works and exactly what the numbers are. Pull it apart.
How the fairness worksBefore you place a bet you are shown
sha256(server seed). You set your own
client seed. A nonce increases by exactly one per bet. Every result comes from:
HMAC-SHA256(server_seed, client_seed:nonce:cursor)
The digest is sliced into 4-byte groups and converted to floats in [0, 1).
Because the hash is published before you bet, the server seed cannot be swapped
after seeing your wager. Rotate your seed whenever you like and the
old server
seed is revealed — hash it, confirm it matches what you were shown, then replay
any past round through the same HMAC and check the result matches. Bet history
stores the client seed, server seed hash and nonce for every round.
The games and the edgeTwelve originals: Dice, Limbo, Plinko, Keno, HiLo, CoinFlip, Wheel, Roulette, Mines,
Blackjack, and two slots (Wildlands, and Crypto Vault which has a bonus round).
1% house edge on the originals. Blackjack is
0.315% measured against
basic strategy — six decks, dealer stands on all 17, blackjack pays 3:2, double on
any two cards, one split. It is lower than the rest because blackjack's edge comes
from its rules, not from a payout table we picked.
The tables for Keno, Plinko, Wheel and both slots are
derived, not hand-tuned:
a payout shape is chosen, then one scale factor is solved numerically so the expected
return lands as close under 0.99 as the displayed decimals allow.
Two things deliberately not copied from other slots:
- No winning combination ever pays less than your stake. A "win" that returns
less than it cost is a habit worth not having. - The symbols above and below a payline come from the same seed. They are real, not
near-miss decoration.
On Crypto Vault the bonus is carved
out of the same 0.99 rather than bolted on:
payline 0.8233, bonus 0.1667. That split is published in the paytable, which is why
the line pays less than a slot without a bonus.
CurrenciesBTC, LTC and DOGE, each with a completely separate balance — no conversion between
them, they behave like three wallets. Every amount is an
integer at 1e-8 precision,
so nothing drifts through floating-point rounding.
Try it without depositingAccounts start at
zero — no fake bonus balance. A faucet drips:
BTC 0.00000100 LTC 0.00100000 DOGE 1.0000
One claim per currency every 30 minutes, with a balance ceiling so it refills an empty
wallet rather than topping up a winning one. Minimum bets are 10 satoshis, so a claim is
genuinely about ten bets.
No KYC to play with the faucet.Also in- VIP — Bronze through Obsidian, 0.25% to 1.50% rakeback, banked per currency and
paid in the coin it was earned in. - Affiliate — 25% of the house edge on everything your referrals stake, which is
0.25% of their volume. Paid on volume, not on their losses, so it never depends on
the people you invited losing. - Auto-bet on every game — bet count, on-win/on-loss reset or increase by %, and
stop-on-profit / stop-on-loss. - Multi-step rounds survive a refresh — Mines, HiLo, CoinFlip, Blackjack and the
vault bonus are stored server-side. - Live chat with tips and rain. Rain only reaches players who are actually connected.
Straight answersRNG audit: no third-party certification. The fairness is verifiable by you, per
round, which is a different and in my view better guarantee — but it is not an audit.
House edge: 1% on the originals, 0.315% on blackjack. Over time the expected
result of play is a loss. That is what a house edge means, and no betting system
changes it.
https://fairbit.betBreak it. If you find a round that does not recompute, post the seed and nonce in this
thread and I will fix it.
18+. Only stake what you can afford to lose. 
