Etherium

An ERC20 token backed by ETH with daily lotteries and auctions.

Overview

Etherium is a collectible ERC20 token where:

• 1 ETH mints 1000 ETHERIUM (minus 1% fee)
• All operations have a 1% fee that funds daily lotteries and auctions
• Random holders win lottery prizes proportional to their holdings
• After day 7, supply becomes fixed at the total minted

Key Mechanics

Minting & Redemption

• Days 0-6: Unlimited minting at 1:1000 ratio
• Day 7+: Can only mint if someone redeems (burns) tokens first
• Redeem ETHERIUM for ETH anytime at contract's ETH balance / total supply ratio (1% fee applies)
• Redemption value increases as auctions bring in ETH at market prices

Daily Distribution

• Fees collected each day are distributed the next day
• After minting period: 50% of fees go to lottery, 50% to auction (both run daily)
• Smart contracts cannot win lotteries (excluded from holder tracking)

Auctions

• Use WETH for bidding (prevents DoS attacks)
• 10% minimum bid increment
• Winners receive ETHERIUM tokens

Technical Details

• Built on OpenZeppelin ERC20
• Uses Fenwick tree for efficient weighted random selection
• 25-hour days ensure events rotate through different times
• Fully immutable - no admin functions

Development

# Install dependencies
forge install

# Run tests
forge test

# Deploy
forge script script/Deploy.s.sol --rpc-url <RPC_URL> --broadcast

License

MIT