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- Every time a brew is minted, there’s a chance for a reward
- Rewards are **small **(and frequent) or large (and very rare)
- Reward eligibility is determined on-chain with no additional third-party dependencies
- There’s a 256-block window to claim a reward
- When a reward is claimed, ETH is distributed to the minter, the current holder of a random token, and the contract owner
- Rewards are designed to scale with demand
Mint Rewards
Every time a brew is minted, there’s a chance a portion of the current contract balance will be distributed as a reward. Rewards aren’t just for the minter - they also go to a random holder and the contract owner.
- A large reward consists of ~50% of the contract balance and has a 1 in 420 chance of occuring
- A small reward consists of ~10% of the contract balance and has a 1 in 10 chance of occuring
The amounts are appoximate - more on that below - and distributed to the minter, random holder, and contract owner according to this chart:
| Odds | Minter | Random Holder | Contract Owner |
|---|
| Large Reward | 1 in 420 | ~49% | ~9% | ~9% |
| Small Reward | 1 in 10 | ~5% | ~1% | ~1% |
Eligibility Delay
A token’s reward outcome is determined one block after it’s minted using blockhash(mintBlock). Until the minting block is sealed, no one can know the outcome. This prevents having to use a third-party service like chainlink for randomization.
Claim Window
Ethereum exposes blockhash only for the last 256 blocks; if a claim is attempted after that, blockhash(mintBlock) == 0 and the token is not eligible (effectively creating a soft deadline to claim within ~256 blocks).
- Currently, a bot is set up to auto-process claims on behalf of onchainbrews.eth
- As a fallback, anyone can manually trigger the claim function within the 256-block window.
