Provably Fair Bitcoin Blackjack | Free Faucet, 3:2 Pays

DEALER

YOUR HAND

Bet: 0 sats

SPACE to deal

Play with any balance ≥ your bet. Deposits & withdrawals min: 100 sats.

Provably Fair

Server Seed Hash (Commitment)

Your Client Seed (Current: default)

Current nonce (game #): 0

What is this?

Your client seed adds your own randomness to each shuffle. Combined with our server seed, it determines the deck order. By setting your own seed, you ensure we can't predict or manipulate outcomes. Change it anytime. A new seed takes effect on your next hand.

Every shuffle uses HMAC-SHA256(server_seed, client_seed:nonce) with Fisher-Yates algorithm. The server commits to the seed hash before you play. After rotating, you can verify past games were fair.

Recent Games (click to verify)

Learn how verification works →

history · recovery code

Your Stats

Hands

Total Won

Best Win

Recent Hands

No hands yet. Start playing!

Blackjack Info

Classic Vegas rules: 6-deck shoe, 3:2 blackjack, provably fair shuffles.

← Back to Games

Provably Fair Bitcoin Blackjack over Lightning

Lightning Faucet blackjack uses a 6-deck shoe shuffled fresh for every hand with cryptographic randomness you can verify. Blackjack pays 3 to 2, regular wins pay 1 to 1, and you can double on any two cards, split pairs up to three times, and take insurance against a dealer ace. Bets run from 1 to 25,000 sats.

You do not need to deposit to sit down. Claim free sats from the daily scratchcard or the weekly free spin and play them at the table. Learn the basics in Bitcoin blackjack basics for beginners or read the full blackjack rules.

Quick facts

Minimum bet: Bets run from 1 sat to 25,000 sats a hand. The chip presets start at 2 sats, and any amount in that range is accepted.
Checking a result: Every result is committed before you bet. To check one: note the server seed hash shown while you play, rotate your seed so the previous 64-character server seed is revealed, then paste that seed, your client seed and the bet nonce into the checker on our provably fair page. Each outcome is HMAC-SHA256 of your client seed and the nonce, keyed by the server seed, so one revealed seed reproduces every bet it covered.
Cashing out: The minimum withdrawal is 100 sats, paid as an LNURL-withdraw QR: any Lightning wallet with LNURL support scans it and pulls the sats into your own wallet, and your wallet supplies the invoice, so no payout address is stored on your account. Withdrawing normally requires the account to have deposited at least 100 sats at some point, but sats you earn from tasks such as offers, microjobs and the bug bounty are exempt up to the amount you have earned, with no deposit at all. Offer earnings carry one extra first-payout check: they stay locked until you have earned 10,000 sats from offers, and any withdrawal you complete lifts that check for good. Microjob and bug bounty sats are not affected by it. See ways to earn.

Can I play Bitcoin blackjack with a free faucet?

Yes. Claim free sats from the daily scratchcard and the weekly free spin, then play them here. Bets start at 1 sat, so one claim is enough to play without depositing.

Is the blackjack shuffle provably fair?

Yes. Each hand starts from a freshly shuffled 6-deck shoe. Every result comes from HMAC-SHA256 of a server seed, your client seed, and a nonce that increments each bet. The server seed hash is shown before you play and the seed is revealed when you rotate it, so you can verify any result yourself.

What does blackjack pay here?

A natural blackjack (an ace plus a ten-value card as your first two cards) pays 3 to 2. Any other win pays 1 to 1, insurance pays 2 to 1, and a push returns your bet.

Can I double down and split?

Yes. Double on any two cards, split any pair up to three times for a maximum of four hands, and double after a split. Split aces receive one card each.

Do I need an account or KYC to play blackjack here?

You need a free account, created the moment you sign in with a Lightning wallet or an email. There is no KYC: no ID, selfie, or address check. See our privacy policy for what account and gameplay data we collect.

How fast are blackjack payouts over Lightning?

Wins land in your balance the moment the round settles. Withdrawals go out as an LNURL-withdraw QR that any LNURL wallet can scan, and clear over Lightning in seconds. Withdrawals unlock after a first deposit of just 100 sats.

Provably Fair Bitcoin Blackjack with a Free Faucet | Lightning Blackjack, 3:2 Pays