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The method to aggregate functions belonging to contracts is given in this library: https://pypi.org/project/web3-multicall/

But my question is, how can I aggregate a basic web3 function (that is not a part of any contract) too using Multicall?

In my case, I want to get multiple transaction receipts/timestamps (using the web3.eth.get_transaction_receipt() or web3.eth.getBlock().timestamp function) via a single API call.

Would it be possible for them or any other basic non-contract functions such as web.eth.eth_balance() to be used with the Multicall feature?

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3 Answers 3

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I will give you an example. Imagine you want to get balances of 100 addresses.

There are two general options:

  1. Your Backend/Frontend calls blockchain a 100 times.

  2. You write a SmartContract function that receives an array of 100 addresses and in turn returns an array of 100 corresponding balances.

The second option is the way to go.

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  • Thank you for the answer. Do you know any public SmartContract which returns the timestamp of a block (similar to web3.eth.getBlock().timestamp), that I can directly use?
    – DEEPAK S.V.
    Commented Aug 4, 2022 at 19:19
  • @DEEPAKS.V. - Yes, the Multicall contract (linked in another comment) does have a getCurrentBlockTimestamp to fetch that. Just note that you wouldn't be able to provide an arbitrary block number; it only shows the most recent block's timestamp.
    – DefiDebauchery
    Commented Jul 25, 2023 at 15:35
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You will get answer at https://github.com/mds1/multicall, a smart contract on many chains.

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  • You aren't answering the question: how to use multicall to call a non contract function in web3 python?
    – Ismael ♦
    Commented Feb 23, 2023 at 22:21
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Multicall3 contract provides a bunch of wrappers around built-in Solidity functions, for example getCurrentBlockTimestamp. You just need add their calls to Multicall3.aggregate.

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