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Now I am wondering how to get the historical balance of ETH and ERC-20 Tokens, like the web tool provided by etherscan. I attempted to add all the transactions on Etherscan to get the historical ERC-20 balances but some of the balances are less than zero which is impossible.

For example, considering address 0x3CC3AE64f26C8FA893358E5AE7717a0D001C0940 and token contract (Aura) 0xC0c293ce456fF0ED870ADd98a0828Dd4d2903DBF, this address received 1,014.571495152404966172 Aura on May-01-2023 as shown by tx 0xe5213a18e203f51f76f36f86a0c63eb7b69867eee80e29b0c577073ee1f1e6d3. However, the web tool shows that on May-03-2023 is zero but on May-02-2023 is 1,014.571495152404966172. But I haven't found any tx that pays 1,014.571495152404966172 Aura on May-02-2023 or May-03-2023. So I am wondering why the web tool shows that on May-03-2023 is zero.

I appreciate your answers and help!

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I can find out the transaction which transfered 1,014 AURA on MAY-02-2023. This is tx: https://etherscan.io/tx/0x177633fbfa3481b1077941dd9b3466bd7174b60976fb9f3e5d9e14eb4870df73 enter image description here

He transferred those aura to CoW Protocol. It means the tool is not wrong, you can look for transactions of ERC20 transfer by accessing this tab https://etherscan.io/tokentxns?a=0x3CC3AE64f26C8FA893358E5AE7717a0D001C0940&p=8

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  • I appreciate your answer. You really help me a lot! The etherscan.io/… only shows the latest 5000 transactions. Are there any ways I can find all the ERC20 transfer? I found the 'CSV export' tool etherscan.io/…, but it is a form and I would like a website layout like the tab your provided etherscan.io/…. I appreciate your assistance!
    – Devin
    Commented Sep 3 at 5:54
  • You may need to search another 3rd party to support it. It requires a lot of resources to scan, so I don't think it will be free. I haven't try that stuff before so I can't give you any suggestion
    – CT95
    Commented Sep 4 at 1:56
  • Thanks for your reply! I will try another 3rd party.
    – Devin
    Commented Sep 4 at 6:17
  • Please accept the answer if it solves your problem
    – CT95
    Commented Sep 4 at 10:36

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