Is a smart-contract crash game automatically more trustworthy than a Provably Fair one?

Not automatically. A smart contract removes the need to trust a company's private server, but you're now trusting that the contract code itself is correct and was actually audited — an unaudited or poorly-audited contract can still hide a bias. Check for a named audit firm and a real report, not just a badge.

Why don't more crash games run fully on-chain?

Cost and speed. Running every round's logic on Ethereum mainnet would add $1-8 of gas to every bet, which makes small-stakes play impractical. Games that go on-chain tend to pick low-fee chains like Solana or Arbitrum specifically to avoid that problem.

Can I verify a Provably Fair round after it happened?

Yes, if the casino implements it correctly — you should be able to take the revealed server seed, your client seed, and the round's nonce, and recompute the same SHA-256 hash the casino published before the round started. Our Provably Fair verifier tool walks through this step by step.

暗号資産

DeFi対中央集権型クラッシュゲーム

クラッシュゲームが公平性を証明する2つの方法。直接監査できるスマートコントラクトと、ラウンドごとに検証できるプロヴァブリーフェアのハッシュです。

Every crash game you'll find online falls into one of two settlement models, and the difference matters more than most casino marketing explains.

Centralized Provably Fair games

Most crash games — Aviator, JetX, Spaceman, and the majority of the genre — run on the casino's own servers. Fairness is guaranteed through a Provably Fair system: before a round starts, the server commits to a hashed "server seed" you can't see, combines it with a client seed you can influence, and after the round reveals the original seed so you can independently recompute the SHA-256 hash and confirm the result wasn't altered after the fact.

This model is fast, cheap to run (no gas fees on the game logic itself), and — when implemented correctly and verified — genuinely tamper-resistant. The catch is trust in implementation: you're verifying that a specific round's hash matches, but you're trusting the casino's server code overall wasn't built to cheat before that point.

On-chain smart-contract games

A smaller but growing set of crash games run the entire round logic as a smart contract on a blockchain like Ethereum, Solana, or Arbitrum. The randomness source, the crash-point calculation, and the payout are all executed and recorded on-chain, meaning anyone can audit the contract code directly on a block explorer rather than trusting a company's server.

The tradeoff is cost and speed: on-chain games inherit whatever gas fee and confirmation time their host chain has, which is why on-chain crash games have concentrated on low-fee chains like Solana and Arbitrum rather than Ethereum mainnet.

Which should you choose?

Neither model is strictly "safer" — a well-implemented Provably Fair centralized game and a well-audited smart contract can both be legitimately fair, and a badly-run version of either can't. What matters practically: check whether a Provably Fair implementation actually lets you verify a real round (not just claims to), and for on-chain games, check whether the contract has a published audit from a named firm rather than just an unverified claim of one.