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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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filter blocks by time range on https://etherscan.io/

Could you please tell me how I can filter the blocks by its created time on https://etherscan.io/? For example, if I want to find all blocks that were created between May-22-2019 04:50:00 AM +UTC and ...
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2answers
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etherscan verification problem

For some purpose. I use web3.js 0.20 to deploy contracts.(eg. press button to deploy contracts automatically, not through remix IDE). When I deploy contracts, etherscan need to verify solidity. Is ...
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Looking for api call to send ERC20 token over eth-wallet

I use metamask and etherscan api to get the info when a specific ERC-20 token is sent to my wallet. I would like to use API to send a specific ERC-20 token back to a given public key over API from ...
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How to verify a contract in etherscan older than 0.4.11?

It seems that the verification feature of Etherscan supports contracts written since Solidity 0.4.11. I want to verify a contract written with Solidity 0.4.8. Is this possible? I'm wondering if this ...
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Could we know if an address contains a specific token via Etherscan API?

I tried this, http://api.etherscan.io/api?module=account&action=txlistinternal&address=0x2c1ba59d6f58433fb1eaee7d20b26ed83bda51a3&startblock=0&endblock=2702578&sort=asc&apikey=...
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Etherscan API call at specific block number

I'm trying to use Etherscan API to call a specific method from smart contract, however, i cannot call at specific block number. For example: This is the API: https://api.etherscan.io/api?module=...
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1answer
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problem displaying ico

I created an ICO using ropsten (because I did not have an ETH) and when I search for my ICO on https://etherscan.io, I cannot find it. I can only find it here: https://ropsten.etherscan.io. Is it ...
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Is it possible to find a specific statistic for each token?

I'm trying to create some sort of statistic generator related to ERC20s. Let's assume you have 10,000 Token A. I would like to tell users something like: "better than 0.5% of the accounts". Basically ...
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1answer
21 views

manipulate transaction input data via web3

When sending ETH to another address via metamask, I confirmed that I can also send input data. For example, 0x7465737420746573742074657374 But I also want to know if it's possible to manipulate input ...
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1answer
19 views

why do i see input data in the transaction details when i didn't pass it as a data parameter

When I create a transaction like below App.contracts.Soccer.deployed().then(function(instance) { return instance.purchaseShoes(name, age, { from: accounts[0], value: value}); }).then(...
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Etherscan apikey error in laravel

Etherscan apikey returns an error This is my code: namespace App\Http\Controllers; use Illuminate\Http\Request; use App\Models\AdminSettings; use App\Models\User; use Auth; define('APIURL', 'http:/...
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25 views

Etherscan how to get latest transactions?

I am using this api to get all transactions at an address, however I see it returns the last 1000 transactions, is there any way to make it return first 1000 transactions by date?
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Problem in contract verification through EtherScan API

Contract source verification through these APIs is putting it 'pending in queue' and not getting confirmed. This interface is also behaving same. I tried it with rinkeby and kovan. Here it works ...
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1answer
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How to retrieve “contract creation transaction” info for a particular contract using Etherscan API?

Assume i have the address of a contract, and now i would like to retrieve the information for its creation transaction. I used getCode(), but return bytecode for the contract, which is different. If i ...
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1answer
14 views

Can I get the timestamp for a transaction added to mempool?

Can I get the time stamp on when a transaction was added to the mempool and when it was successfully added to a block? Is there an API to do this?
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1answer
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Fetching a snapshot of all the contracts accessible on Etherscan

I am trying to collect a large set of online contracts and came across the following statement in a research article: Does anyone know how to access such a "snapshot of 25983 contracts"? Is it ...
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2answers
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I found 4 very similar wallet addresses. How is this possible?

These are the addresses: 0x7cB57B5A97Eabe94205c07890BE3C1aD31E486A8 0x7Cb57B5a97EaBe94205c07890bE4C1aD31E456a8 0x7cB57B5A97eAbe94205C07890BE4c1aD31E486A8 0x7CB57b5A97eabe94205C07890beaC1aD31E486a8 ...
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Warning: The compiled contract might be susceptible to ABIEncoderV2PackedStorage (low-severity) Solidity Compiler Bugs

This Etherscan.io gives this warning when compiled contract with solidity compiler version 0.5.5 I am sure that is low severity issue and might not apply to our use-case, but I could not find any ...
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Etherscan.io How does it get the exchange wallet address for these token addresses?

Etherscan.io How does it get the exchange wallet address for these token addresses?
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1answer
84 views

Set Price for ERC20 Token [closed]

I have an ERC20 Token that i have deployed and now have transferred it to about 100 addresses. Now the price shown on my Etherscan for my token is $0.00. When i search through the top ERC20token like ...
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what is the role of merkle tree in ethereum? [duplicate]

I know the functionality of merkle tree, it makes a root hash from a group of data.My question is how merkle tree is act in ethereum blockchain,precisesly in the place of transaction hash,block hash,...
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My friend sent me a screenshot of a transaction hash, but when I search for it I find divergent data. What happened?

This is the transaction hash: 0x90e923ee01d9dfeb95ee176819eeec67d247fc6cb009c8cdc4d8ae1939e5ecc6 And this is the screenshot my friend sent me: If you check the hash in Etherscan, some informations ...
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Is there any case when the only transaction in Ethercan is IN, but Balance is 0 Ether?

The address that received only a hundred orders of deposit shows in zero balance. I understand when using wallet on the exchange, that should have one transaction that corresponds to OUT. But there ...
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1answer
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Can't see the source code with the new Etherscan user interface?

everyone! A few days ago, Etherscan has updated their user interface - and now I have no idea, how to get the verified contract's source. Before it was located no the #readContract tab, but now there'...
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1answer
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what is difference in ethereum transaction after constatanople upgrade?

I have heard that Constantinople update transverse the consensus protocol of ethereum from proof of work to proof of stake. So they claimed that this update could speed up the TPS(transaction per ...
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scatter confirmation for sign a transaction?

I have built an dapp. It's almost like twitter where the user can tweet and also use as a microblogging site in blockchain.I have used scatter as transaction signer for using my dapp. The real problem ...
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2answers
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how to setup a ethereum private blockchain?

Does anyone know how to set up a private blockchain in ethereum network? is that possible to run a private ethereum node? I have seen forking of public blockchain like EOS into a private blockchain.i ...
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1answer
49 views

How can I decode transaction input to know what method was called and what arguments were passed in (and arguments types)?

following to the approach explained here to use etherscan api from Python to get transactions info such as input How to retrieve transactions' info such as gaslimit and gasprice from Etherscan? ...
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1answer
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how to get contract creation code (bytecode) from etherscan api?

I tried etherscan api to get the contract creation code (bytecode for depolying contracts). I tried both getContractABI and getSourceCode, but the return values are not what i am expecting. I need ...
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Possible to obtain a list of token transactions within a specified date range?

For example: Let's say I want to see the transactions for a range between January 1, 2019 - Janurary 15, 2019. I'm looking at the etherscan API but it doesn't appear to do this. It allows you to ...
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Is there a node-static.json file for swarm node?

As far as I am aware of a static-node.json is a file for P2P geth node connection on disconnect. I have tested that and It works just fine. I was, therefore, wondering if it is possible to have such a ...
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2answers
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verify and publish when using oraclize?

I'm using oraclize in my contract. import "github.com/oraclize/ethereum-api/oraclizeAPI.sol"; When I go to verify and publish on etherscan I get this error myc:4:1: ParserError: Source "github.com/...
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1answer
53 views

KBC to ETH transaction [closed]

I withdrew KBC from my HitBTC account to my countries local crypto app LUNO which only supports ETH. This transaction was sucssesfull however I can not retrieve it from my Luno account. They say it ...
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What does that Filter By means? in ropsten etherscan while deploying tokens on ropsten

I've deployed my token contract on ropsten etherscan. Sometimes it shows me some address besides Filter By what doed that filter by exactly means?
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104 views

Is there any way to get all token transfers of a specific block number?

I am looking for a way to get all erc20 token transfers with specifying block number only. For ETH there is already a way exists here. I have done some search and found this method to find transfers ...
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How to read the data from block?

In my smart contract, I am inserting plain text message. I can also update the message. After updating, if I want to see the previous message, is it possible? Can I see all the data in etherscan.io?...
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1answer
17 views

Confusion With Etherscans representation of an Address

I'm trying to get a list of unique addresses that have interacted with a contract. As well as some data included in the events of each transaction. In order to do this, I use the action=getLogs query ...
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1answer
21 views

What are the advantage of verifying source code in Etherscan?

I deployed a smart contract in ropsten test network. Now when I try to verify the source code, I am getting some error. What if I do not verify it?
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1answer
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What is this address and for what?

What is this address and for what? 0x000000000000000000000000000000000000bEEF
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1answer
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Does etherscan api support retrieving ERC-20 Token txns?

I use etherscan api. https://api.etherscan.io/apis I want to get ERC-20 Token txns (or Token Transfer Events) like this page. https://etherscan.io/address/0x57e7674b1c58a0edce5a62af228ab34f09c00fca#...
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Extract all transactions for a specific token for Ethereum

I would like to extract all transactions for the DNT token using the ether scan API. Is there a way to do this without providing the address for the token API? https://etherscan.io/token/...
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1answer
67 views

Ethereum extract transactions based on timestamp

I am trying to extract all transactions of Ethereum using the eth scan API. But I need transactions for specific time periods only. I tried running the API for all the blocks to try and extract all ...
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1answer
81 views

Ethereum transactions timestamp

Is it possible to extract individual timestamps of the transactions' execution time in a given block? The Ether-scan API gives only the timestamps of the block collation, doesn't mention anything ...
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0answers
39 views

Ethereum transactions full history

How do I retrieve the transaction history of ethereum? I want to get all transactions that include this crypto currency for specific time periods. I looked at the ethereum API, but it needs some ...
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1answer
64 views

What does etherscan mean by “Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)”?

I'm inspecting a contract on etherscan, at the following URL: https://etherscan.io/address/0x5cb5f46a655c02889172323760d12d0e5d83cdaf#code At the bottom of the web-page, I see two sections: ...
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1answer
167 views

How to get all internal transactions from Etherscan?

Just like we can crawl all external transactions in Etherscan, Is there a tool/method to collect all internal transactions from there ?
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4answers
303 views

API for ERC20 token balance - EtherScan

Is there any API for ERC20 token balance of an address for a particular contract?
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My code compiles on remix.ethereum.org but not on etherscan.io please help! [closed]

I get this error " ParserError: Function, variable, struct or modifier declaration expected. function transferFrom(address _from, address _to, uint _value) public returns (bool) ^ " everytime ...
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1answer
30 views

Understand an online contract with no EVM bytecode avaliable

Could anyone shed some lights on the following contract? https://etherscan.io/address/0x27d6c4cb2551799a143e1a3291ae002b8c8aa078#code I am quite confused about what's going on here. Why doesn't the ...