TON Lottery Smart Contract

A decentralized lottery system on TON blockchain where users can participate by depositing TON coins.

Features

• Users deposit TON (1 TON = 1 ticket)
• Automatic chance calculation based on deposit amount
• Owner-controlled prize distribution
• Random winner selection based on weighted chances
• Full prize pool distribution to winner
• Ownership transfer capability

Contract Methods

Internal Messages

• op=1: Deposit TON (min 1 TON)
• op=2: Distribute prize (owner only)
• op=3: Transfer ownership (owner only)

Get Methods

• get_owner(): Current owner address
• get_total_deposited(): Total TON in pool
• get_total_tickets(): Total tickets issued
• get_user_chances(address): User's ticket count

Usage Example

// Deposit 1 TON
await contract.send({ 
   value: toNano('1'), 
   body: beginCell().storeUint(1, 32).endCell() 
});

// Distribute prize (owner only)
await contract.send({
   value: toNano('0.05'),
   body: beginCell()
       .storeUint(2, 32)
       .storeUint(ticketNumber, 32)
       .endCell()
});

Todo

• Handle random number generation within the contract instead of owner input
• Make minimum deposit amount configurable by owner
• Add pause/unpause functionality for deposits