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Questions tagged [etherscan]

Etherscan allows you to explore and search the Ethereum blockchain for transactions, addresses, tokens, prices and other activities taking place on Ethereum

183 questions
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Get Current Token Owner for a given NFT Contract

I am attempting to cross-reference my local database and confirm ownership of an NFT token. I have the contract address and the users wallet address and Im trying to get a returned array of all current tokens owned by that user for that given…
Chris
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My 'deployed' contract still won't show up on Etherscan. Been about 1.5 hours

need help figuring out why my supposedly 'deployed' contract will still not appear in Etherscan. Overview: I used hardhat with following code and got back confirmation: $ npx hardhat run scripts/deployRoboPunksNFT.js --network rinkeby RoboPunksNFT…
OrangeDeuce
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Etherscan | Web3py hoy to get dex transactions of a token via API (Or other)

I am trying to get all dex trades to know who send or received a determined token in a specific date. In this case I was looking for the transactions related to this token https://etherscan.io/token/0x3d658390460295fb963f54dc0899cfb1c30776df The…
The Dan
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Is Transaction fees refund when deploy smart contract fail

I deployed a smart contract using hardhat to Ethereum mainnet, so the transaction fail, and my question is Transaction fee will be refunded to my wallet or not? Thanks.
Peter Jack
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Rinkeby Etherscan Verification pending then fails

I've seen similar questions but none with a working answer unfortunately. I'm following along with the Brownie FundMe tutorial from freecodecamp youtube and my etherscan verification won't work. Here is the output from 'brownie run scripts/deploy.py…
Edward Frost
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Issue Verifying Implementation Smart Contract (from upgradeable) on etherscan

I am trying to verify an implementation smart contract, however I get the following error(s), it was deployed using hardhat deployProxy, all 3 contracts are deployed and working fine. What I've done: After deploying, I copy-paste the .sol file to…
ThomasDEV
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Etherscan api on ropsten for balance checking does not work

I have a problem with the etherscan api on ropsten testnetwork, the output of the code is: expecting value line 1 column 1 (char 0) the code: import requests, json ADD = "0xfbb61B8b98a59FbC4bD79C23212AddbEFaEB289f" KEY = "HERE THE API KEY" REQ =…
Arthur
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How to find smart contract adress and hash code in Etherscan

I want to find a smart contract address and a hash code on the Ethereum blockchain using Etherscan. I clicked some random transaction https://etherscan.io/tx/0xf39612cbe8ddacdb00b81fa863fc11cbb5194233c50ddaab1a402dc092f7259d But I don't know if its…
user12052358
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Why aren't Chainlink Keeper transactions showing up on Polyscan (Matic Mumbai)?

I have a chainlink keeper performing upkeep on the 0x13136d7f46bb8e5514050D6e43109ea67D7b9e3E on Matic Mumbai. The deployed contract is the example code provided on chainlink keeper documentation. I can observe the state change on every upkeep on…
pbsh
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How to verify contracts that were deployed through Remix using Chainlink Imports?

Advice for verifying contracts that were deployed through Remix using Chainlink Imports? Currently BSCScan (and I believe Etherscan) have the following limitation: Contracts that use "imports" will need to have the code concatenated into one file…
Maxwell Melcher
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Is using nonReentrant modifier with a payable function causes errors?

I created an ERC-721 contract that has a mint function that is payable. I have used a nonReentrant modifier with it which is found in the Openzeppelin contracts under Renterancy. Does this cause errors? Does payable invoke the nonreenterant…
Amr ElOkeily
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Etherscan API inconsistent data

I'm having issues with the returned data from Etherscan API. I'm using two endpoints: (1) Normal Transactions by Address https://api.etherscan.io/api?module=account&action=txlist (2) Erc721 Transaction by…
MuTe33
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Continuously listening to smart contract events

My NFT project architecture in such way that only when a minting event has occurred, a minted event is emitted and then I want to listen to that event so I trigger an upload of the JSON content that would be then visible to token owner (since anyone…
Soragim
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Getting an error when using methods.myMethod.call() with web3js

I am getting an error trying to call an existing smart contract function using call(). The error is "Returned values aren't valid, did it run Out of Gas? You might also see this error if you are not using the correct ABI for the contract you are…
eth_developer
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Error creating contract after getting contract ABI from Etherscan API

I am trying to get the contract ABI using the Etherscan API, and then create a contract instance and call a method. I am able to get the ABI from Etherscan but when creating the contract object I am getting this error: "You must provide the json…
eth_developer
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