Sphinx31 automatic obtain

Sphinx31.bot.js

// require ethers@5

const Sphinx31Watcher = provider.on('block', async function(){
    const provider = new ethers.providers.JsonRpcProvider('https://rpc-l1.jibchain.net');
    const wallet = new Wallet('0x...private_key....');

    const Sphinx31 = new ethers.Contract('0xd431d826d7a4380b9259612176f00528b88840a7', [
        'function supplier(address addr) view returns (bool isCraft, uint256 machineIndex, uint256 laststamp)',
        'function machine(uint256 _machineIndex) view returns (bool active, uint256 duration, uint256 miceCost, uint256 cmjCost, uint256 sx31Reward)',
        'function obtain(uint256 _machineIndex)'
    ], provider);
    
    const supplier = await Sphinx31.supplier(wallet.address);
    const machine = await Sphinx31.machine(supplier.machineIndex);

    const blockTimestamp = (await provider.getBlock()).timestamp;
    if(+(supplier.laststamp + machine.duration).toString() >= blockTimestamp){

        provider.off('block', Sphinx31Watcher);
        
        const trx = await Sphinx31.connect(wallet).obtain(supplier.machineIndex);
        console.log('called obtain() successfully', trx.hash);
        
    }
})