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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1inch token swap to ETH resulted in 0 ETH

I did a token swap of OST -> ETH using 1inch (first time). I connected a Metamask Wallet, approved OST for swap & then executed the swap ( https://etherscan.io/tx/...
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How do I use in3 (Incubed) for Bash to view ethereum records for a given address?

I want to be able to query an ethereum contract address that I know is valid with the in3 module in bash. I have installed Incubed (in3) for bash), and I have used this documentation to try to query ...
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Recovering ETH after sending to wrong address

I'm struggling to find an answer to this. I have mistakenly sent all my ETH to a smart contract (used as a redemption address only for TaaS token - 0xa6b5e8df6553969de6006edb3a87ff5226f4a115). I got a ...
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Curve.fi deposit - Where is my money?

I just used Meta-Mask and funded the program with BUSD from my Binance account in order to test a deposition on curve.fi. Moreover, a small amount of ETH was transferred to Meta-Mask in order to cover ...
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“Getting AGE/TIMESTAMP of a Pending Transaction from a Transaction Checker”

Can I get TIMESTAMP of a pending transaction as soon as it's added to etherscan.io recent transactions list? I'm using GETH and WEB3 for a transaction checker and it's fetching me recent pending ...
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Can someone help me understand what this address is? It says its private but has a lot of weird transactions. I am trying to track a scammer

I am tracking a scammer and I need to figure something out, just to be sure. For example https://bloxy.info/ is telling me this address 0xc94ebb328ac25b95db0e0aa968371885fa516215 is a a regular ...
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Calculating Ethereum Gas Fees

How are gas fees calculated in account based model coins like ETH? Let's say I own 10 ETH addresses with 0 starting balance. I receive 0.1 ETH payment from 10 people - each one sending a payment of 0....
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UniswapV2: INVALID_SIGNATURE [closed]

When I remove liquidity from some pool I get this error: Etherscan - Geth VM Trace Transaction { "type": "CALL", "from": "...
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Token not visible under “Tokens” on Etherscan

I have deployed an erc20 token contract to rinkeby, ropsten using truffle. Each time the contract is deployed properly. However, the token details are not visible under 'tokens' in etherscan. Please ...
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Extract all blocks data from etherchain into a csv file

i want to extract data from etherscan into a csv file or format. wanted to extract all blocks mined yet and transactions done till yet
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Help me Obi Wan Kenobi… I need some assistance with understanding etherscan and where my erc20 tokens went

First post, thanks in advance for any help. Back in early 2018 I setup some friends with MEW wallet when they had purchased some Trx while it was still and erc20 token. I know mainnet happened etc ...
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How to get token prices with UNISWAP API

I am using uniswap python api to get live token prices. I am using all the variation of the built-in functions. However, it does not give me the right value. HERE IS MY CODE address = "...
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Problem getting 'Normal' Transaction records from Etherscan.io API

I am using the "Get a list of 'Normal' Transactions By Address" method from the Etherscan.io API. The problem is that the results from the API are different than from results from the '...
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Unable to transfer ETH out of my wallet on etherdelta/forkdelta [closed]

I had created my wallet on etherdelta a while back. Realised recently that I had some ETH & other tokens lying around in that wallet. I imported my account in forkdelta. However when I try to ...
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web.eth.call() returns a revert even when the transaction is success

I have this snippet to test if web3.eth.call() can check if a pending transaction will revert in advance. web3.eth.call(tx, "pending") .then(result => { console.log(count, "Passed!&...
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“Error! Missing Or invalid Action name” Etherscan API error

I created a utility in my function to get the status of transactions using Etherscan APIs. It was working well until recently. Here's the function: def get_eth_or_usdt_transaction_status(...
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Get all transfers of a token contract from etherscan API with python

I am trying to pull out from etherscan api all token transfer from a particular token contract. Currently, I can pull data by manually going to etherscan token contract page - for ex cvc coin: https://...
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36 views

How to check if a pending transaction nonce has duplicate?

Is there a web3 function or other workaround to check if the pending tx has duplicate nonce?
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64 views

THETA token sent to contract address instead of correct wallet address

By mistake, I sent my THETA token to the contract address instead of my correct wallet address. This is the transaction link on Etherscan https://etherscan.io/tx/...
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58 views

Out of gas problem on contract call

Here ether scan links to failed transactions : last failed attempt : etherscan link others : etherscan link traced view of contract calls etherscan link (you may just change the tx hash on the URL to ...
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30 views

Get ETH Wallet address list (holder list) given a smart contract address (erc20)

I would like to fetch the list of all ETH wallet addresses by an API(?), given a smart contract address (erc20 token address). Similar feature that we see on etherscan.io under the erc20 Holder list. ...
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Conflict Occurs on Getting Token holder address in Ethereum

I am creating a javascript code to get the holders address involved in the Transaction of my contract address. For eg I am creating a token and send it to multiple users so there will be multiple ...
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17 views

Losing ERC20 token without trace on etherscan

I would like to know if there is a way to take a token from an account without letting a trace on etherscan ? I recently swapped some ETHs for a Base Protocol token and i got around 2940 BASE in the ...
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Etherscan Transaction Action Info

I'm trying to establish if it's possible to use the etherscan API to establish the Transaction Action information (e.g. Swap 1 Ether For 2 Yf-DAI). If not, how are they doing it? I had a look to see ...
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Discrepancy between Etherscan.io and Google Big Query information

I noticed that there are large discrepancies between the balances of addresses in Etherscan vs Google Big Query. Also some addresses that are listed in Etherscan are not existing in the balances table ...
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How can I access data of transaction topic?

I need to access the data from topic 2 below (see image): With this code I can render the topic hash, but not the topic data: contract .getPastEvents('allEvents', { fromBlock: START_BLOCK, ...
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Why addresses from the exchanges do not show on Etherscan?

I have some ether in an exchange but when I searched it on etherscan.io it is showing There are no matching entries there I got to know exchanges have the balances on their own wallet address, but ...
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25 views

How do I get gas used by or price of a single mined transaction like in etherscan through a ethereum node?

I was using ethers.js to get the transaction receipt of a mined transaction but when I get the cumulative gas used it seems to give me cumulative gas of the block mined and not the transaction itself. ...
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Events not working in Trust wallet or Metamask

Recently, I've developed an Dapp using pure vanilla js and it's contract is currently deployed on etherscan.When someone buys a token, it should increment..Everything's working fine but in the trust ...
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Neither Token name nor supply shown in etherscan, instead shown “() N/A”

Recently, I've created an ERC20 token on Etherscan and verify the source code but my token information such as token name and total supply not showing up..Instead it shows balance: 0 N/a and supply ...
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27 views

Any ideas how to recover my 400 UNI drop from an old instadapp mcd vault smart contract?

I apologize for having to post this again because my lack of reputation but maybe I can reword it better this time. My ETH address: 0x34A2860bbbA761ae27005799b02D3DbD8b4b5fEb Old InstadApp MCD Vault ...
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Can I change the comments in a contract and still pass Etherscan verification?

Suppose that you have a contract, someone audited it, and you would like to use that specific version for compilation and deployment to Ethereum. Now, you want to verify the source code on Etherscan, ...
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486 views

Why INSUFFICIENT_OUTPUT_AMOUNT?

I sent this transaction with 74 GWEI and 185421 gas limit. So far my calculations: 74 * 185421 -> about 6.6 USD, at the time of writing. The screenshot above shows 1.04 USD. Below it says gas used ~...
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Getting 0 holder on Etherscan testnet despite having token transactions through DAPP

Recently, I've created a token and it is pure ERC-20 Compliant...I've sent some token to another address but when I see it on rinkeby testnet etherscan web page it shows 0 holder despite having the ...
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Order of pairs in sync events

I was checking at SYNC transactions of some Uniswap contracts: and noticed that in some contracts the ETH amount comes first and in others second (here it's second, i.e. reserve1). Other than ...
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35 views

Transaction failed etherscan, coins disappeared?

Okay, I have no idea what just happened, but I think I just lost like 50% of my coins. I sent Link from my ledger to binance, and when I checked an hour later, it said failed both on my ledger app and ...
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174 views

Convert JavaScript number to uint256

I'm trying to deploy ERC20 contract by using Web3. Here's the contract constructor fun: constructor( string memory name, string memory symbol, uint8 decimals, uint256 ...
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18 views

A good way to decode transaction hash content on public Ethereum blockchain?

I want to check if there are some good tools available to decode the transaction hash to know the content on public Ethereum Blockchain? Primarily to validate the data stored by the dapp. Thanks
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Obtain ALL historical token transfer events for an address using Python [duplicate]

I would like to exhaustively obtain all token transactions for a specific address. Etherscan's API returns only the last 10,000 transactions in this way: Get a list of "ERC20 - Token Transfer ...
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35 views

“null” function name decoded from ethereum transaction, which function I executed on earth

question hi, I got a ethereum tx decode like this I don't know why there's a function named "null", I look at smart contract, no function name is "null". so I am confused, which ...
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41 views

Reason for a transaction and 2 cancelling transactions being stuck?

I sent a transaction. Shortly after, I decided to cancel it, so made a cancel transaction (using MetaMask). After a while, since nothing was happening, I sped up the cancel transaction, i.e. sent a ...
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38 views

What's the difference between token tracker and address page in Etherscan?

As an example, let's use DAI. DAI has these pages in Etherscan: https://etherscan.io/token/0x6b175474e89094c44da98b954eedeac495271d0f https://etherscan.io/address/...
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25 views

The transaction can get from Web3j but display as failed in Etherscan

How could I get the real status from EthBlock.TransactionObject(replayPastBlocksFlowable) in Web3j as same as Etherscan? I couldn't find any status items from Web3j response, how does Etherscan check ...
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57 views

Etherscan “Write” buttons not interacting with Metamask [closed]

For some reason, I cannot get any of the "Write" buttons on Etherscan to intereact with my metamask. I made sure to "connect to Web3" before I proceed to click on the "Write&...
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How do I verify a contract that has imports on etherscan?

There is an answer from 2017 here saying that it's not possible but it's been 3 years since then so hopefully there is progress. My Vyper contract looks something like this: import ERC20 as ERC20 ...
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Cannot verify source code smart contract on Etherscan! PLEASE help me

Link for the contract on Etherscan: https://ropsten.etherscan.io/address/0x339237da476f50777da2d04b05037a805e46fcdb Arguments Type: String,String, uint8 ~ "FinanceToken", "MYFI", &...
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Transaction dropped and replaced in etherscan

I have transfered my ETH to my friend and the transaction status shows as "Dropped & Replaced" in etherscan, but it's still pending: https://etherscan.io/tx/...
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2k views

How to manually approve a token for swap on Uniswap (direct contract interaction)

I want to approve token spending on Uniswap for a token I don't own. Uniswap UI won't let me do that (instead it displays a gray out button "insufficient balance"). Seems the only option ...
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36 views

Cannot reproduce Etherscan verified compilation for 0.6.6 contract

I'm trying to reproduce the following contract compilation on Etherscan: https://etherscan.io/address/0x7a250d5630b4cf539739df2c5dacb4c659f2488d#code. Runtime bytecode on-chain I can get the runtime ...
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193 views

Transaction Error. Exception thrown in contract code. REVERT

I keep getting an error when trying to call function "setTokenAddress(address input)" Here's my contract code: pragma solidity 0.6.12; library SafeMath { function add(uint256 a, ...

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