Play the
economic layer.

An onchain gacha built on Arc. You pay a fixed price in USDC, one spin happens, and you receive a token reward drawn at random from the machine’s published reward table. Every step is recorded onchain and can be checked by anyone.

It depends on the machine. Genesis and Discovery are 2 USDC, Velocity is 3 USDC, Blue Chip is 5 USDC. The exact price is shown before you sign, and the price is locked into the spin the moment it is accepted — it cannot change underneath you.

Tokens that actually trade on Arc Mainnet. Each machine lists its full reward set, the possible amount range for every asset, and the probability of each band, before you spin.

A prize vault funded ahead of time. A machine cannot accept a spin unless the vault already holds enough of every asset in its reward table to cover the worst-case payout for that spin and every spin still in flight. The contract enforces this, so a machine cannot promise what it cannot pay.

By commit–reveal. Before your spin exists, the operator publishes a batch of sealed commitments onchain. Your spin consumes the next one in strict order and binds it to your address, the machine version and a future block. The seed is then revealed, and the result is the hash of the seed, the salt, your request’s entropy and that block’s hash. Anyone can recompute it.

No. The seed was committed before your spin existed, so it cannot be adapted to the outcome, and revealing anything other than the committed pre-image fails the onchain hash check. Once revealed, the value is immutable — there is no admin function anywhere that can overwrite it. The operator can refuse to reveal, which denies a result rather than changing it; if that happens you are refunded in full and compensated from the operator’s bond.

Your reward stays yours. If the push transfer fails — a token pauses, or blacklists your address — the amount remains reserved in the vault and becomes claimable by you. It is not withdrawable by the treasury and it is not lost. You pull it whenever the token allows.

Arc, Circle’s Layer 1, chain ID 5042. Arc Mainnet opened on 16 September 2026.

Native USDC — the gas asset on Arc, which uses 18 decimals. Because it is the native asset, a spin needs one signature and no ERC-20 approval. Note that the separate USDC ERC-20 interface on Arc uses 6 decimals; Arcade does not mix the two.

The fairness page lists every spin with its id, machine version, config hash, request transaction, revealed seed and salt, the anchor block, the resulting random word, and the settlement transaction. You can recompute the word yourself from the published inputs, or call the contract’s own recompute function and compare.

No. Most spins return less than the spin cost — that is what the published odds describe. Reward tokens are volatile and some are thinly traded, so a reward’s value can also fall after you receive it. Arcade makes no promise of profit and you should not treat a spin as an investment.

No. Arcade is an independent application built on Arc. It is not affiliated with, sponsored by, or endorsed by Circle or Arc.