Shuffle Blackjack Verifier
Verify the fairness of your Shuffle.com and Shuffle.us Blackjack card deals using cryptographic proof
Understanding Shuffle Blackjack
Game Statistics
How It Works
100% Private
All verification happens entirely in your browser. Your seeds and bet data never leave your device - we don't collect, store, or transmit any information.
How to Verify Shuffle Blackjack Results
Step 1: Get your seed data from Shuffle
To verify a Blackjack bet, you need three pieces of data:
- Server Seed (Unhashed): Navigate to your bet history on Shuffle.com or Shuffle.us. Click on the Blackjack bet you want to verify. The server seed will be revealed in the bet details after the round completes.
- Client Seed: Found in the same bet details section. This is the seed you set before the bet.
- Nonce: Each bet has a unique nonce. Find it in your bet details alongside the seeds.
Note: The server seed is automatically revealed after each round on Shuffle.
Step 2: Enter your data in the form above
Paste your data into the verification form:
- Enter your Client Seed exactly as shown on Shuffle
- Enter the Server Seed (Unhashed) from your bet details
- Enter the Nonce for the specific bet you want to verify
The verifier calculates the card sequence using Shuffle's exact HMAC-SHA256 algorithm.
Step 3: Compare the card sequence with your bet
After clicking Verify, you'll see the complete card sequence:
- The verifier shows all cards dealt from the shuffled 8-deck shoe
- Compare the card order with your actual Blackjack hand (player cards, dealer cards, and any additional cards drawn)
- If they match exactly, the bet was provably fair
If results don't match, double-check you're using the correct unhashed server seed and nonce for that specific bet.
Frequently Asked Questions
What is the house edge in Shuffle Blackjack?
Shuffle Blackjack has approximately 0.5% house edge when using optimal basic strategy, which translates to about 99.5% RTP (Return to Player). The game uses a standard 8-deck shoe with traditional Blackjack rules.
Does this verifier work for both Shuffle.com and Shuffle.us?
Yes! Both Shuffle.com (international) and Shuffle.us (US sweepstakes) use identical provably fair algorithms for Blackjack. This verifier works for both platforms - just enter your seeds and nonce from either site.
How many decks does Shuffle Blackjack use?
Shuffle Blackjack uses an 8-deck shoe (416 cards total). The HMAC-SHA256 algorithm shuffles these decks and determines the card order for each hand dealt. This is a standard configuration used in many casino Blackjack games.
What does the Blackjack verifier show?
The verifier shows the complete card sequence dealt from the shuffled 8-deck shoe. This includes your cards, the dealer's cards, and any additional cards drawn during the hand, allowing you to verify that the game outcome was determined fairly and matches your actual Blackjack round.
Is my bet data safe when using this tool?
Absolutely. All verification happens 100% client-side in your browser using JavaScript. Your seeds, nonces, and bet data never leave your device - we don't collect, store, or transmit any information to our servers.