We use a commit-and-reveal scheme where the server generates a SECRET and shares its hash before betting. After the bet is resolved, the server reveals the SECRET, allowing users to verify the fairness by recalculating the HMAC_SHA256(SECRET, HASH_OF_BET_TRANSACTION).
XRoll - Provably Fair Gaming on XRPL
Why XRoll.io?
Provably Fair
Our commit-and-reveal scheme ensures every bet is cryptographically fair and verifiable. Check out our Technical Whitepaper for more information.
100% On-Chain
All bets, results, and transactions are fully auditable on the XRP Ledger blockchains for complete transparency.
Regulatory Compliance
Integrated with Sumsub for KYC/AML. Play responsibly within legal frameworks and set your own betting limits.
Immediate payout
Immediate payout straight to your wallet.
Why You'll Love XRoll
Unparalleled Security
Play with confidence knowing your bets are secure and tamper-proof.
Instant Payouts
Win big and receive your rewards instantly, without delays.
User Friendly
No-nonsense UI. Just play. From any wallet.
Optimal Bankroll Growth
Our betting limits are designed to ensure a mathematically optimal bankroll growth while ensuring the house never goes bankrupt.
How to get started
Step 1
Send a transaction to (XRP Ledger). Send any non-dust amount (e.g. 0.001 XRP). It will be sent back with important information for verification.
Step 2
You'll get a response with the commit for the next secret, so you can verify its fairness. It's possible that you'll get asked to pass KYC (see the return transaction Memo field, or use our Admin Panel).
Step 3
That's it! Start betting simply by sending transactions to (XRP Ledger). Use our open-source admin panel to set limits, verify outcomes, or inspect transaction memos in your wallet. Every response from us will contain information to mathematically verify the fairness of the next roll.
NOTICE!
Our system includes two major security mechanisms to avoid Denial of Service attacks and ensure fairness and uptime for all the players. You must be aware that:
- Non-bet transactions (commands, above limit, etc) will be refunded minus transfer fees. Fees in the XRPL are extremely low (around 10 drops), but you should be aware of this.
- Transactions below the dust amount are ignored, since we'd be losing money by acknowledging them, opening us to attacks.
See It in Action
Betting from Wallet
Send a transaction directly from any XRPL wallet to start playing instantly.
Casino Interface
Prefer a GUI? Use our intuitive interface for real-time gameplay and bet control.
Fairness Verification
Every result includes cryptographic proof you can independently verify.
Let's Partner
We're actively seeking partnerships with licensed operators and distribution platforms to expand our provably fair gaming model. If you're regulated and share our vision for transparent on-chain betting, we'd love to connect.