Get the value of ERC20 tokens transferred using the Etherscan API

Question

I am using Etherscan API to get transaction and other details for addresses.

I need to find out no. of tokens transferred between two addresses. For Ex - for Below TxHash I see 1564+ tokens transferred. When I use this API call I see from and to address but not token value.

Hello All, Have you found any solution for the same ? Thanks — Mangesh, Sep 06 '18 at 10:35

score 4 · Answer 1 · answered Jul 12 '19 at 02:56

Here's json result from your api call:

{
    jsonrpc: "2.0",
    id: 1,
    result: {
        blockHash: "0x8fe66b0c15a1c1155338bb5628db55f05cfe72d1194931134b4721cd07e9eda7",
        blockNumber: "0x416850",
        from: "0x167a9333bf582556f35bd4d16a7e80e191aa6476",
        gas: "0x13880",
        gasPrice: "0x4e3b29200",
        hash: "0x03430ecdf52d37a8d3645fa9b19c072ec367edbd0d4eba3cc1c7f7c5e7dcc7d2",
        input: "0xa9059cbb0000000000000000000000007a2641bb2fb31ccd33ba5488c886c3bc4714ec6b000000000000000000000000000000000000000000000054ca7578dcf8bb7aa0",
        nonce: "0x15a82",
        to: "0x9a642d6b3368ddc662ca244badf32cda716005bc",
        transactionIndex: "0x2a",
        value: "0x0",
        v: "0x25",
        r: "0x790a06d5773006ecbc719354d966d100470e6267a68d3446ca0ebfd8df4452b5",
        s: "0x4e58eb2997a3c8add1386a47a71ac5bb915a2a53343883ea1ea4d8e69a6be486"
    }
}

Please take care of the input field:

First 4 bytes is method hash:
```
a9059cbb
```

Next 32 bytes is target address:

0000000000000000000000007a2641bb2fb31ccd33ba5488c886c3bc4714ec6b

Last 32 bytes is value of ERC20 tokens transferred:

000000000000000000000000000000000000000000000054ca7578dcf8bb7aa0

0x54ca7578dcf8bb7aa0 = 1.5641152016500001e+21

phra · Answer 2 · 2017-10-10T18:28:35.310

2

Given a txtid is possible to retrieve the logs of the transaction via web3 using the getTransactionReceipt() function.

Alternatively, you can use this API exposed by etherscan.io: https://etherscan.io/apis#logs

Remember to set the right topic, as mention in this other answer: What is topics[0] in Event logs?

edited Oct 10 '17 at 18:28

answered Sep 18 '17 at 12:43

phra

83
8

Yes eventually I am trying this, but this would require traversing all transactions of a address and check for that address in all logs. – garg10may Sep 18 '17 at 12:45
2

Also I am not sure how to find topics, without topics I can't traverse all the logs since they would need pagination which is very ineffective since there are 400k blocks. Still exploring. Was hoping there was some direct way. – garg10may Sep 18 '17 at 12:47

score 0 · Answer 3 · answered Dec 09 '21 at 09:06

0

@jun.wu,

x54ca7578dcf8bb7aa0 = 1.5641152016500001e+21

How did you come to this conclusion? Is there any formula or what?

answered Dec 09 '21 at 09:06

Laralex

26
2

As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center. – Community Dec 09 '21 at 11:01
This does not really answer the question. If you have a different question, you can ask it by clicking Ask Question. To get notified when this question gets new answers, you can follow this question. Once you have enough reputation, you can also add a bounty to draw more attention to this question. - From Review – Julissa DC Dec 09 '21 at 13:45

Get the value of ERC20 tokens transferred using the Etherscan API

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