How to subscribe to Multiple Eth addresses on USDT token transfer events-CodePudding

I have a list of Eth user deposit addresses. They can make External USDT transfers to these addresses. How do I subscribe to the USDT contract and filter for all the User Addresses I have for deposits. My user numbers would keep growing.

I understand I can filter Transfer events on 1 to address. But how do I filter on a addresses in the order of thousands?

CodePudding user response：

You can use the web3 event handler options object (docs) to subscribe to transfers to only specified recipients.

Example:

usdtContract.events.Transfer({
    filter: {
        // `to` is the name of the indexed Solidity event topic, as in
        // `event Transfer(address indexed from, address indexed to, uint value)`
        to: ["0x123", "0x456", "0x789"]
    }
}, (err, data) => {
    // ...
});