This is a PRO endpoint, available to any paid tier
This historical endpoint is throttled to 2 calls/s
Query Parameters
Your Etherscan API key.
Chain ID to query, eg
1 for Ethereum, 8453 for Base from our supported chains.Set to
account for this endpoint.Set to
balancehistory for this endpoint.The address to query, like
0xfefefefefefefefefefefefefefefefefefefefe.Block number to check balance at, all the way up to the genesis block
0.