Base ecosystem contracts for general use by third parties

MultiMarketPrediction Contract

A decentralized prediction market smart contract that allows the admin to create multiple markets using supported ERC20 tokens.

• Admin features: add supported tokens, create markets, resolve outcomes, withdraw accidental ETH.
• User features: place bets on market options, claim winnings if their chosen option wins.
• Security: uses OpenZeppelin’s ReentrancyGuard, Ownable, and SafeERC20 for safe and secure interactions.
• Mechanics:
  • Each market has a question, multiple options, and an end time.
  • Users bet with supported tokens before the deadline. git
  • After resolution, winners can claim a proportional share of the total pot.

Disperse Contract

A bulk transfer utility contract for distributing ETH and ERC20 tokens to multiple recipients in a single transaction, similar to disperse.app.

• ETH dispersal: send ETH to many wallets in one transaction.
• Token dispersal: approve tokens to the contract, then distribute to multiple addresses.
• Admin features: recover mistakenly sent tokens/ETH, transfer ownership.
• Security: includes ReentrancyGuard and a minimal SafeERC20 wrapper.
• Notes:
  • Useful for airdrops, rewards, or batch payments.
  • Large recipient lists may hit gas limits — split into multiple calls if needed.