Get Wrapped ETH amount paid on Polygon network NFT transaction

Moralis General
#1

I just noticed an issue getting transaction history for an NFT on polygon. The sales on OpenSea on in Wrapped ETH (wETH).

Iā€™m using getWalletTokenIdTransfers() to get the transaction history for single token IDs. The value it returns is a MATIC fee and not the amount of ETH paid.

const fetchNFTTransfers = async () => {
        try {
          const options = {
            chain: 'polygon',
            address: '0x67F4732266C7300cca593C814d46bee72e40659F',
            token_id: '555',
          };

          const resp = await Moralis.Web3API.token.getWalletTokenIdTransfers(
            options
          );

          const data = await resp.result;

        } catch (err) {
          console.error(err);
        }
      };

This is one of the OpenSea sales transactions returned which has a value:

amount: "1"
block_hash: "0x507e8ffacbde64dbed5bb78baf1db049238399facb4268c14cdbe50b6a4bf618"
block_number: "30689343"
block_timestamp: "2022-07-13T19:01:30.000Z"
contract_type: "ERC721"
from_address: "0xaf6a968a7563bb8fcb999290792c8b357f7b5839"
log_index: 64
operator: null
to_address: "0xb8a376f55c9ec030b070bcae233aae471d9aa9e0"
token_address: "0x67f4732266c7300cca593c814d46bee72e40659f"
token_id: "555"
transaction_hash: "0x64c5eb5dc4c67f5047248c1f22cd5e67ce3ffbe769f63c5cf8406282d4cb1e92"
transaction_index: 12
transaction_type: "Single"
value: "27000000000000000"
verified: 1

If you check PolygonScan you see the value is 0.027 MATIC but under ā€œTokens Transferredā€ the sale price of 5.5 ETH is there. Thats the number I need but it doesnā€™t look like any of the Web3Api returns this data.

https://polygonscan.com/tx/0x64c5eb5dc4c67f5047248c1f22cd5e67ce3ffbe769f63c5cf8406282d4cb1e92

Does anyone know if there is a way to get the ETH tokens transferred from this one transaction?

#2

I thought maybe I could run a new search on that txn hash for the WETH contract address but doesnā€™t look like any of the Web3APIā€™s are setup to do this.

#3

Have you looked at using the OpenSea API?

Another option is to use getTransaction and manually go through the Transfer event logs to get the wETH amounts.

1 Like
#4

Oh nice, I didnā€™t see the getTransaction function.

I was thinking of doing that using Covalent and loop through the logs.

Thank you