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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Events Emitted in logs but not mentioned in the contracts

Event EvProfit is the second event emitted in this transaction on etherscan. However, when i click on "view source" & get redirected to the contracts on 0x743123, I couldn't find where ...
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map.json file is empty after deploying the contract

I set dev_deployment_artifacts: true in brownie-config.yaml I did brownie run. But, the map.json file just contains {} i.e., it is empty. Why is this happening? Can someone help me out!! Thanks in ...
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Tokens lost in uniswap by using manualswap function in etherscan. Please help

I had initiated manualswap from etherscan. Please check the transaction : https://etherscan.io/tx/0xf389c6e00c2dca2f1b3e21724d0c1d3c3b602b17c504cefd4ccc4450d3c4b4e2. Instead of receiving ethereum, it ...
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Finalized blocks with 0 transactions and 0 block reward

This block was finalized 21 mins ago from now and there is one exactly like this waiting to get finalized Here is the link of that. Both of them had 0 transaction, 0 block reward, 0 extra data, 0 gas ...
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What information can I get from a hash?

Say i have a hash - I think sha256/keccak: 90ad6dec4ce7167e92c7a7122232d48a1fd5e6c5e81cb3f45c147424b6728437 What do i do with it? Is there something on etherscan that can decipher it or show what it ...
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Getting chain name from transaction query

I'm trying to get the get a list of transactions a wallet has had with a specific chain. Initially I thought I could just filter by the contract address, but it seems like there are multiple chains ...
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Parsing log data from Etherscan

I am trying to use Python to parse Uniswap swap event data from Etherscan. Here is the code for obtaining the swap event log: import requests etherscan_api = 'https://api.etherscan.io/api' ...
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Error! Unable to generate Contract ByteCode and ABI on rinkeby etherscan [duplicate]

I am trying to verify and publish a smart contract on rinkeby etherscan. But I keep on getting this error. "We tried looking for a match from the list of compiled contract bytecode outputs (as ...
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How does etherscan checks that the contract is ERC20 standard implementation?

Suppose I created any ERC20 contract, how does etherscan recognise that the deployed contract is an ERC20?
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generation of my private key

Can my private key be generated when someone else creates a wallet? If each private key is generated completely randomly, then I think my key can be generated repeatedly I created a wallet, but on ...
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How can you make sure you have your fee recipient set correctly?

Using Teku, Prysm, or other consensus client, how can you make sure your fee recipient is getting the fees from staking? Is there a way to see where your fees are going on the block explorers? Should ...
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Is it possible to verify someone else's smart contract on Etherscan?

I just deployed an ERC20 token on the Rinkeby testnet. The token has some features like Minting and Burning. After verifying the code on Etherscan I am able to interact with the functions and generate ...
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what is the purpose of a raw tx hex?

Every now and then I'll see someone say just copy/send the raw tx hex, I guess to copy the transaction - like an nft mint - and send it faster instead of writing through the contract? Is this correct? ...
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Procedure for getting a crypto exchange to freeze and apprehend a whale scammer?

Traced a wallet funneling embezzled funds to a wallet on a centralized exchange using the peel-chain strategy. It's accumulated thousands of stolen bitcoin for almost a decade and still is! How to ask ...
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is there anyway I can get all nft transaction for certain nft collection address?

I'd like to get sales transactions(e.g. "Atomic match" or "Transfer from") for certain nft collection like bayc, preferrably on python. I tried several methods like using smart ...
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Verify on Rinkeby doesnt work for my contract eventho all parameters are right

Hello the following code has been succesfully compiled and deployed to rinkeby(0x2e38e76bc1bf67483e5c79dfa7adb8aa66667daf) but I cant verify it. I have quadruple checked the compiler version, if ...
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Read functions do not appear in a verified contract

I have developed a contract that deploys another contract (without params in the constructor). The idea is to have the first contract (Platform) as a common storage contract and use the second ...
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Transaction on etherscan vanished

Anyway i saw my transaction of eth on etherscan, thought looking good. so put laptop away for 10 minutes and waited for it to clear into my Metamask. After just 10 a 20 minutes went back and saw that ...
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Tracking ip in etherscan

How do you find ip address in an ethereum transaction/etherscan? My ledger wallet was recently compromised and the tokens in my wallet were stolen. Is there anyway i can track the ip address in ...
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Is it possible to pull proxy contracts through an Ethereum based API?

I built out a script using web3js that will scrape data from specific contract ABIs. But, if the contract that is interacted with is utilizing a proxy contract it will pull the ABI of the proxy, not ...
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MetaMask Registering Contract Methods - Not Working

I was following these docs: https://docs.metamask.io/guide/registering-function-names.html#verify After verifying my contract and using the write section, my methods still aren't verified by MetaMask, ...
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Etherscan -> logs -> data -> receiptId

what is the reciptId section in the data section. How can you include it in a transaction? new to ethereum so sorry if this is a stupid question. I would like to include the name of a person in the ...
2 votes
1 answer
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Goerli Eth not showing up on metamask

I have tried 3 ways to get goerli eth - the alchemy faucet. The alchemy Goerli faucet. The transaction link on etherscan: https://goerli.etherscan.io/tx/...
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Nonce of an account or contract in etherscan

According to ethereum.org, nonce is a counter that indicates the number of transactions sent from the account, and in a contract account, this number represents the number of contracts created by the ...
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Verify on etherscan

Trying to verify contract 0x0568a87e64e65f4cc7898e08f0e57ffe2aa6241f, compiler 0.8.7 with source code // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/...
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How can I solve withdraw function not working on a deployed contract which worked on testnet

This is my smart contract and the withdraw function doesn't work , throws a big gas fee amount and seems not to work // SPDX-License-Identifier: UNLICENSED pragma solidity ^0.8.9; ...
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Harmony - Extracting staking reward amount from a CollectRewards() transaction

I've been working through my transaction history in Harmony (using Koinly to keep records - but a combination of Koinly API sync, Lila's Ledger and some manual extracts to reconstruct history). I'm ...
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API that lists ERC20 token holders and balance

I am looking for a service that provides an API that lists addresses holding a given ERC20 token holder and the amount held. The API would be similar to Etherscan's: https://docs.etherscan.io/api-...
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Get block from timestamp at given times

I'm looking for a way to find the block corresponding to a given timestamp; for a graph where you can see your balances per day in a graph. I tried to make it but my provider/node was using too much ...
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How to mint Dai to Goerli testnet wallet?

Trying to get lots of Dai (need like 300,000+) on Goerli to transfer to zksync alpha testnet. When I try to just directly mint to my wallet's address on etherscan using the contract web interface, ...
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Contract verification fails with standard-json-input having linked libraries

I have a simple library and contract using that library as follows: CNTestLib.sol // SPDX-License-Identifier: MIT pragma solidity 0.8.10; library CNTestLib { function doStuff() public { } } ...
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Out of gas ethernaut lvl 10 - reentrance

I'm trying to solve Ethernaut level 10 reentrancy task, but I'm getting "out of gas" error. https://ethernaut.openzeppelin.com/level/0xe6BA07257a9321e755184FB2F995e0600E78c16D This is my ...
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how can send ERC-20 Token to multiple address in solidity from deployed contract?

Here is my mulsend contract code and Here I want to send token to multiple address from another deployed contract this is my deployed contract: https://rinkeby.etherscan.io/token/...
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Gas estimation failed error

Following error is coming: Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending? execution reverted { "...
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Error HH8: There's one or more errors in your config file

MY hardhat.config.js require("@nomicfoundation/hardhat-toolbox"); require("dotenv").config(); require("@nomiclabs/hardhat-etherscan"); const Goerli_RPC_URL = process.env....
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How to get info of the collected/unclaimed fees of liquidity providers of Uniswap V3 API?

I have been struggling a few days to find a way to get information on the rewards (or fees) that liquidity providers on Uniswap V3 gain in a specific pool (claimed AND unclaimed fees). However, the &...
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How to search with a partial address ethereum

I have a partial eth address with multiple letters/numbers in their correct place. how could i go about searching a list of addresses that contain the same sequence and place? i have chunks of the ...
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Transaction status marks Success but don't have Tokens Transferred

when I checked some transactions I found sometimes transaction mark success but can't see any info like Token Transfer. In this case, do you know what type of this transaction ?
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Do ETH have its own contract address in Ethereum Chain?

Sorry that i have a stupid question would like to ask. As I know, each token which ride on EVM has its own contract address. However, i am not sure native token.Such like native token (ETH), will it ...
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Is there a Harmony API function to fetch both both the HMY and ETH transaction hashes

It appears that Harmony Transactions have multiple hashes, with the web-based block explorer showing both a Harmony and an ETH transaction hash (randomly picked example). This is causing me some ...
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Why isn't ether value not showing in etherscan transaction?

I called a fund function and sent 0.55 ether to this contract. Now called withdraw function and all the ethers in the contract came back to my metamask account. But in the screenshot below you can see ...
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Fail with error 'TransferHelper: TRANSFER_FROM_FAILED'

I'm trying to swap a BNB for BUSD using pancake swap and quick nodes but I am getting a error when doing the swap. https://bscscan.com/tx/...
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How to verify in PolygonScan correctly?

I am trying to verify a contract in Polygonscan. I flatten my contract, remove the constructors, compile in REMIX IDE without erros with Petesburg EVM version using enabling optimization (200). The ...
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Why are certain Ethereum transactions not showing up in downloaded blockchain data?

I am trying to calculate the balances of addresses on the Ethereum blockchain and I noticed that some of them came up negative when I was testing my code. This led me to realize that, of course, some ...
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How to differenciated between ERC20 transactions and normal transaqctions when getting raw transactions using web3

When looking at etherscan transactions are divided as normal transactions or ERC20 transactions. When using web3 and getting the transaction, correct me if Im not wrong, but all of them are bundled ...
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Computing a Marketcap gives unreasonable results

Let's take a hypothetical token, let's say $SANI. https://www.dextools.io/app/ether/pair-explorer/0x394cb9e147b8b288e38615ae04f442a037bcb99f Let's look at the contract, totalsupply: https://etherscan....
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What values does Disperse.app's disperse function parameters look like?

So the etherscan's write function looks like this, I've tried submitting: 0.05 address1,address2,address3,address4,address5 10000000000000000 and the contract won't accept it, does anyone know where ...
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Why the transaction fee in blockchains change?

I would like to understand why when making a transaction in the blockchain, the fees change. Being in the polygon network, I execute the same contract 10 times and the transaction price is always ...
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When calling `getOwners` on a Gnosis Safe contract, is there a trivial code solution to detect if the returned addresses are also Gnosis Safes?

I'm looking to build a sort of whitelist of addresses for my application based off the owner addresses associated with a Gnosis Safe contract. I want this to work up to two levels deep, so I'm calling ...
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Calling multiple contract methods in nodejs returns error

I'm developing a crypto bot with node and ethers. Had faced a lot of erros but was able to overcome till this one. I'm not a huge experienced dev and don't feel confortable with this architeture yet ...

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