Questions tagged [etherscan]
Etherscan is a search engine that allows Ethereum blockchain users to look up, confirm and validate transactions that have taken place on the blockchain.
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I want to subscribe to flashloan events on the Aave v2 contract via websocket, how do I find the function/event?
I am trying to set up a websocket connection with ethers.js to listen for flashloan events.
I have made a connection successfully listening to Transfer events on the USDT contract - which was simple ...
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Ethereum Money Loss: Seeking Help to Identify the Hacker [closed]
I hope this post finds you well, but I'm currently facing a significant problem that I need your help with. My phone was inexplicably hacked, leading to the loss of a substantial amount of money from ...
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Why is Transaction Value showing 0 ETH on Etherscan?
I'm not sure why the transaction value on Etherscan is showing as 0 ETH when the transaction was confirmed.
According to the recipient, they haven't received anything in their wallet either and I'm ...
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How to get a token bluecheck from polygonscan?
I would like to ask about blue checks in polygon scans.
Is there any documentation that we need to submit to receive a blue check for our token registered with polygonscan?
On the polygonscan ...
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How Can I find the right network of the transaction? - an emergency question for a newbie
I used 'Goerli faucet' and entered my MetaMask wallet address, but now I don't know which network I should use to see how much Ethereum I have because currently, my MetaMask wallet shows that I have ...
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Transaction involving contract and ETH
I have a problem in Web3. I'm trying to obtain data from an ETH transaction but it involves a contract (Coinbase 10). From what I understand of the transaction, it looks a lot like token transactions (...
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Smart contract deployment pending forever
I have a smart contract that is compiled and deployed using Remix and verified on Sepolia testnet.
https://sepolia.etherscan.io/verifyContract-solc?a=0xA3Bc4ac115CF4C57b507797731F43c14Ff6A2A6c&c=...
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What is 'value' in this Uniswap transaction log on Etherscan?
Hi, I'm finding it difficult to understand what Value is(=0.16 ETH in this example).
Is it the miner tip to put the transaction first wrt to everyone else? Or is it the value in ETH of the token ...
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How to retrieve addresses affected by block?
I need to scan each block and extract addresses affected in the block.
The address is affected when funds (ETH, tokens, etc.) are sent to or from the address or involved in any other transaction.
As ...
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Uniswap V2 router contract call fails with TransferHelper: TRANSFER_FROM_FAILED
The scan link is here: https://wemixscan.com/tx/0x717a6385a15f896a08dc9e6ca3980cdd7443ca8a88a0ab5944522c61200c06a8
I'm trying to swap between WWEMIX(Wrapped Wemix token) for WEMIX$ (Wemix dollar) by ...
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How can this account address selled more erc20 token then it received?
I'm using the Alchemy API to retrieve all transactions for a specific address. When I run the API for this address on this particular token, I only receive two transactions. The first transaction ...
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why can't use Apostrophe( ' ) in token Name,
Polygon explorer/ etherscan explorer
why can't use Apostrophe( ' ) in token Name, And if I did the explorer shows "'"; instead Apostrophe. eg.(cat's = cat+ "'"+ s)
...
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How can I find simple smart contracts to test with?
I am working on a project where I have to retrieve source codes of deployed Ethereum smart contracts from Etherescan.io, and I am looking for very simple smart contracts where I can perform some ...
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Availability of smart contracts in Etherscan?
Are all smart contracts deployed in the Ethereum network available on Etherscan.io ?
Because I read here https://info.etherscan.com/using-smart-contract-search-tool/ that 'All verified source code can ...
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Building Cryptocurrency Tracking system for monitoring stolen cryptocurrency transactions
When hackers steal tokens from an account, what they generally do is divert the flow of tokens via multiple proxy accounts making it complicated for the cyber-forensics department to track final ...
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Help me make sense of this seeminlgly simple Uniswap V2 transaction, please
https://etherscan.io/tx/0x006a041ade99b4715e6578ac968932f47fa9f1be1a676ad66678260ca0fbb6d1
This appears like a vanilla UniswapV2Router02 swap, sending the well-known method ...
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Can I make a contract call to refund the unused gas fee to a specific address instead of the msg.sender?
Can I make a contract call to refund the unused gas fee to a specific address instead of the msg.sender? I want to use this as a means of charging fees for my project.
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How to know which smart contract have same wallet address as contract owner?
Is is possible to find out which smart contract transferred ownership to a same wallet address (different from the contract created owner) on Etherscan / Bscscan?
Let say i only have a targeted wallet ...
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How to get the amount recieved during swap on Uniswap?
I'm trying to get the amount that I recieved in WETH during swap on Uniswap(can be hardcoded WETH).
On the code below, I took random address that did swap, got his transactions and then decoded it ...
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USDT Transaction Dropped & Replaced
While trying to send USDT to a wallet address, my transaction got dropped and replaced. I assumed that the transaction would go through if I just wait, but it seems that it got replaced and sent to a ...
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how to verify a contract on etherscan?
thank you for your answers, but I think I'm still missing something, I don't know where to look for the elements that I don't like? does anyone have a solution please? I try with CONTRACT VERIFICATION ...
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How Can I Filter Ethereum Transactions by Method ID or Name, Similar to Etherscan's Advanced Filter Feature
I am working on a project where I need to retrieve all transactions associated with a specific method within a given block or set of blocks. As an example, Etherscan provides this functionality ...
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How were tokens withdrawn from this wallet without having the private keys?
Case beyond my knowledge.
There is a wallet on Ledger. Etherscan.io reports a successful transaction of some fake coin FROM this wallet. The amount of coins is non-zero.
No action has been taken with ...
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how to deploy factory smart contract
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.17;
contract Car {
string public model;
address public carAddr;
constructor( string memory _model) {
model = _model;
...
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Fetching an implementation contract using ethersjs
I'm attempting to get the implementation contract for a proxy using ethers (and testing it using the recently published Paypal USD: https://etherscan.io/address/...
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What api can i use to find token max per wallet and max per tx
Im trying to make a programm that returns max tokens per wallet and max tokens per transaction after i provide the contract address. What api should i use for this goal?
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Have I been hacked?
Why can’t I see the ether in the balance even though the received transactions are there?
https://etherscan.io/address/0xdc16771a8461dac99750e806a02f3c5fb298e8de
Really confused here, would ...
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Coin transaction not showing in Pinklock wallet
I'm trying to help my friends sort out an issue for why the coin supply they locked/sent to Pinklock v2 wallet aren't showing up in said wallet.
this is the txn: https://etherscan.io/tx/...
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Multible Transactions right after opening Trade or Method 0x110bbd8d
I've been looking at the latest pairs on dextools.io lately and I've noticed that it's becoming more and more common that even when the trading pair is only a few minutes old, there are already ...
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How to find the origin of the token/crypto in the wallet?
For example,
Wallet 0x...A1 has 0.5 ETH. I want to know about the origin of 0.5 ETH.
Can I get that data from the Etherscan API (what endpoint?) or another solution?
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Can a smart contract change the true value of ethereum in a wallet
I have created an atomic wallet where stolen funds have been returned to me by a recovery company in ethereum.Ican see the eth in the wallet with a dollar value.An etherscan of the wallet address ...
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Stuck Transaction: Receiving USDT from Binance Smart Chain to Coinbase Ethereum Address
I hope you can assist me with a transaction issue I'm currently facing. I received USDT to my Coinbase Ethereum address from Binance Smart Chain, but the transaction is on hold, and I am unable to ...
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How to Un-flatten a smart contract in Solidity?
how to un-flatten this smart contract?
https://etherscan.io/address/0x789e35a999c443fe6089544056f728239b8ffee7#code
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Ledger sent eth to uniswap router and now swap was completed why is that?
I made a swap on my ledger using wallet connect and instead of swapping the coins on uniswap it sent the eth to the router and no coins were swapped
Any idea why that would be and if there is anything ...
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Self-Destruct function able to restore tokens?
I sent tokens to etherscan contract address which can be triggered to send them back to the sender's address probably. Can someone help me out with that to do so? Need every help out there :/
Would ...
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How to read private immutable field?
In solidity, immutable fields are stored on bytecode and not at the storage slot. So, if I want to query how can I do it?
eg:
pragma solidity >=0.7.0 <0.9.0;
contract MyContract {
uint ...
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I found a transaction that the maxFeePerGas is equal to maxPriorityFeePerGas on ehterscan
I know the maxFeePergas = baseFeePerGas + maxPriorityFeePerGas in EIP-1559.
But I found this transaction.
https://etherscan.io/tx/0xe753607fff85bb9298b90d4dc3357c92d82add1f9a09b48c348fdd7e97a68cd2
I ...
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How to decode a log['data'] hexBytes from a solidity event using web3.py
I need help pulling zkEVM log data from testnet.
I have this simple solidity event in my smart contract (https://testnet-zkevm.polygonscan.com/address/0x98544219dd60eCc071302dAfBfce22F74334f244) that ...
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Brownie Explorer API not set for this network
I am trying to deploy a solidity contract with the source code to a Sepolia test net, using Brownie. The contract deploys successfully, but the source code does not. I keep getting this error.
File &...
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Coinbase ghost transactions - what happened?
I went through the following process with a new wallet, and I lost my funds (not a lot)...
I am trying to understand, from the blockchain perspective, what actually happened.
This is the wallet in ...
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How to identify ERC 20 swaps using ehterscan API
Hi I would want to identify ERC 20 swaps for a certain ETH address using etherscan API.
At their site method column shows if it's a swap.
But the json of the response doesn't include a method field, ...
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contract.deploymentTransection.wait(1) not working in ethers version 6.4.0
Error is in this line
const deploymentReceipt = await contract.deploymentTransection.wait(1);
Entire code I am using to deploy contract and wait
const { ethers, run, network } = require("hardhat&...
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Why some transactions do not show "Estimated duration" on etherscan.io?
For example, the following transaction:
https://etherscan.io/tx/0x55208219262d9687ba18982d7c77e5052bceeada85a9075ca061d6c911778dd5
In the Timestamp line, you can see "Confirmed within 17 secs&...
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Decode ByteCode contract
How to decode a ByteCode contract on etherscan for exemple : https://etherscan.io/address/0x6b75d8af000000e20b7a7ddf000ba900b4009a80#code?
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Constructor Arguments for verification on Etherscan
I want to verify a contract on Etherscan.io, but I am not able to find the correct Constructor Arguments.
I tried everything which is explained on StackExchange, but cannot get it to verify...
using ...
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How to find Constructor Arguments for verification on Etherscan.io
I spent 4 days for this work.
plz make me know anybody.
this is solidity code of my token
I use openzeppelin.
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
import "@openzeppelin/...
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Eth received minus eth spent does not match eth balance and by a big margin
This address "0xd75e7d1A42b616A24a8AFA71a462D74738a87d50" shows eth balance 0f 3.66. However this address has received 162 eth and spent about 10 eth. The eth balance should be much higher ...
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UniswapV3 Swap Router Sepolia Address
Have been looking for UniswapV3's SwapRouter's deployed address on the Sepolia Test Network. For some reason the Unsiwap has't provided us with the Sepolia deployed addresses.
Can someone help me here....
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How to get the error message from the require statement?
I am using this test contract on Remix IDE
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
contract testfunction{
function test() public pure{
require(false,"Testing ...
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EIP-1559 transaction classification on etherscan
I am wondering how I can detect the type of transaction submitted on Ethereum based on EIP-1559 adopted or not.
Thank you
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