Filter events by topics/selectors

[michprev]

Events can be filtered by event topics here:

SDK/packages/sdk-server/src/lib/chains/evm/poller.evm.ts

Lines 105 to 110 in 5d757a0

	//build url
	const url = this.apiURL +
	`/api?module=logs&action=getLogs&address=${address}` +
	`&fromBlock=${startBlock}&offset=${cursor.limit}` +
	`&page=1&sort=asc&apikey=` +
	this.apiKey;

The SDK should be interested only in a few kinds of events:

• deposit
• release
• refund

Each event has its selector/topic which is equal to keccak256 of a normalized signature of the event. For example, a VS Code extension named Tools for Solidity can be used to get event selectors.