Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.

0
votes
1answer
18 views

Reading Ledger from etherscan API vs Emitting Events

Consider the following function from a solidity Contract: function createProduct(uint _price, string memory _desc) public payable{ emit UserLedgerUpdated(_desc, -1*int(msg.value)); } I want my ...
0
votes
1answer
15 views

Issues while sending raw transaction for calling smart contract methods?

let provider_url = "https://ropsten.infura.io/v3/d5bca90ec3084aee8abd468fdf876a11"; this.web3Provider = new Web3.providers.HttpProvider(provider_url); window.web3_ = new Web3(this.web3Provider); ...
0
votes
1answer
20 views

Tokken Holding on coinbooks.io

I put my private key on etherscan.io and retrive my public adress and put it on coinbooks.io for watch. In the token holdings i see an another adress with a high value of tokkens. haw can i ...
0
votes
1answer
18 views

How to get the timestamp from the latest event on the etherscan.io apis

How to get the timestamp from the latest event on a contract using the etherscan.io api ? I'm using the getLogs call this way: https://api.etherscan.io/api?module=logs&action=getLogs&...
1
vote
1answer
32 views

REMIX: ParserError: Expected identifier but got 'payable' address payable target

Hello i have the follow contract: https://pastebin.com/dQJY55hs I want add this code tu the code above: constructor(uint _totalSupply) public { totalSupply = _totalSupply; balanceOf[msg....
0
votes
0answers
25 views

How to get token holders addresses of a specific token inside a smart contract? [duplicate]

I want to distribute profits to my token holders, I want to write a smart contract that shell fetch the token holders of that specific token and distribute profit accordingly. My question is what is ...
0
votes
0answers
9 views

Can i get the same output from geth that is shown in Etherscan (VM Trace Transaction)

Etherscan have a section to show VM trace (example: https://etherscan.io/vmtrace?txhash=0xce26e9f59d895a63ce38b0a7d0b1649a58909a7ae24029f7fee39cb4b94980df&type=parity#raw). How do i get this ...
0
votes
0answers
13 views

How can I get InvestorInfo via the Etherscan API, such as on the Read Contract Information page in the InvestorInfo section? [on hold]

I'm new in cryptocurrencies and blockchain technology and do not know a lot of things. I read all the information about the Etherscan API on the page, but I only learned how to view the balance of a ...
0
votes
1answer
26 views

make a contract send a percentage to a specific wallet (always)

how can I make a contract send a percentage to a specific wallet (always)? Example that whenever a transaction is made from this token the 1% go to X wallet. Thank you. Ok felix dolderer thanks for ...
0
votes
2answers
19 views

How to distinguish a “ether pay” transaction with a “function call” transaction

So basically we can find many transaction histories within each block, like this: https://etherscan.io/txs?block=1506816 So my question is that, since on Ethereum we can do the following four kinds ...
1
vote
1answer
24 views

What are all possible values of txreceipt_status?

I was wondering what are all the txreceipt_status possible statuses. I was investigating some blocks and noticed that some statuses are empty like: ' ' or have '1'. For both of those, transactions ...
2
votes
1answer
30 views

How Can I call contract's function from Java?

There is BizzleTokenSale contract. pragma solidity ^0.4.2; import "./BizzleToken.sol"; contract BizzleTokenSale { address admin; BizzleToken public tokenContract; uint256 public tokenPrice; ...
3
votes
1answer
46 views

How to match the etherscan.io bytecode using the solc compiler?

Trying to do some simple sanity checks between the verified contracts on etherscan.io and the bytecode available on the blockchain for those contracts. I picked a random contract to test: https://...
2
votes
1answer
57 views

why solidity 0.5.0 version code does not verify on etherscan?

The solidity version 0.5.0 at v0.5.0+commit.1d4f565a seems some issue while verifying at Etherscan.io The contract I deployed: https://rinkeby.etherscan.io/address/...
1
vote
2answers
26 views

transaction fails due to out of gas in mainnet

Transaction fails due to out of gas though gas used by transaction is 22.32 % . What might be the reason ? I have give enough gas : 203000 wei. Here is the link of the transaction
2
votes
1answer
25 views

Token totalsupply displaying zero at etherscan but displays correctly at remix

I verified and deployed a token contract using remix. The totalsupply displays correctly 80000000000 but at etherscan it displays the totalsupply as 0.0000000008. Summary [ERC-20] Total Supply: 0....
0
votes
1answer
18 views

What is the recommended procedure to report potential vulnerabilities in a smart contract?

I was browsing etherscan's verified smart contracts (i.e. the ones with the source code attached), and I saw that one of the smart contracts contain (or at least I think it contains) a potential ...
1
vote
2answers
45 views

Warning: “throw” is deprecated in favour of “revert()”, “require()” and “assert()”. throw;

my question is if "THROW" is deprecated then what i have to put instead throw in the following solidity code ? // This function creates Tokens function createTokens() payable { if(...
2
votes
0answers
12 views

What is driving occasional drop in number of transaction pending in the last few days?

Anyone can explain any events that trigger a sudden drop in pending transactions occasionally (refer to diagram below)?
1
vote
1answer
14 views

Ethereum Node I want to export transactions from a token

I have an Ethereum node running and I am wanting to export transaction history for a specific ERC20 token to a local database every 10 minutes. Does anyone have any suggestions on how they would do ...
0
votes
2answers
25 views

Tokens on a Contract

Want to get tokens amount sent to my contract address on chain, but don't know address of token. Can I get through any function ? Any possible way to so ?
1
vote
2answers
41 views

How to dynamically load contracts data with their ABI from etherscan API?

Im wanting to pull data from a smart contract I've loaded via user address and etherscan API for the ABI. But how would I go about programmatically adding all the functions from the ABI into my ...
0
votes
1answer
50 views

etherscan request API limit [closed]

i want to know the limit request on etherscan API with API key, and limit if we go on paid service. thanks in advance.
0
votes
0answers
21 views

We were unable to locate ContractName

I have a problem with contract verification. I'm getting this error: Error! Unable to generate Contract ByteCode and ABI Found the following ContractName(s) in source code: AltcoinToken, ERC20, ...
0
votes
1answer
23 views

can not find specific events and list events of the past the last 1day

I'm wrote this sample but I want to filter specific events 'unsealBid' and list events of the past (e.g. the last 1 or 2 days). const Web3 = require('web3'); const web3 = new Web3('https://mainnet....
1
vote
0answers
64 views

Verifying contract code on etherscan

This question will be very similar to this one, but I'm stuck and don't know what to do: Token contract source code not verified Anyways, my friend sent me 2 pieces of code, the actual contract code,...
0
votes
0answers
16 views

Decentralized Exchanges on Ethtereum Testing Network for test

There are many exchanges available in market for token trading but found Kyber Network Proxy exchange on Ropsten also for testing trade function. And I can buy tokens through Ropsten Network. Any ...
2
votes
2answers
165 views

How is it possible for 0x0000000000000000000000000000000000000000 to send out ERC-20 tokens?

Isn't 0x0000000000000000000000000000000000000000 a burn address where no one has private key? If that is the case, how can this address send tokens to other addresses? If you look at Etherscan's ERC-...
0
votes
0answers
27 views

How to find specific reason Ether transaction failed

Using Web3.py I am trying to deploy a contract to an Ethereum Ropsten Test Network. Every time I attempt the deploy, I print the returned transaction hash and take it to Etherscan.io to check on its ...
1
vote
1answer
30 views

How to deploy smart contract with visible source code (etherscan)?

I'm trying to deploy a contract to the rinkeby (hope that thats the network to use for beta testing). Deploying worked with the command truffle migrate --reset -f 2 --network rinkeby. Unfortunately,...
0
votes
1answer
21 views

Ethereum (Java) API

has anyone a good suggestion for a well-documented Ethereum API that is not limited by requests and allows to gather all information about token (transfers)? Basically an api that provides ...
1
vote
2answers
116 views

Constantinople fork: my local Ropsten is not on the same branch of Etherscan

With the Constantinople fork few days ago (Oct 2018) my local ropsten node is not the same as Etherscan. I have geth 1.8.3-stable my node: block hash of 4248333 is 0xb24b6a6... ropsten....
1
vote
1answer
25 views

Is it possible for the miner of a block to be address 0x0?

Take a look at this transaction: https://etherscan.io/block/5305. The miner is listed as 0x0000000000000000000000000000000000000000. Is this reasonable? Did someone configure their node incorrectly? ...
0
votes
0answers
14 views

where does Etherscan gets account name from? [duplicate]

Where does Etherscan gets names of accounts from? Is it ENS? Token name ? Or do they collect input data from users? For example, this address bleongs to F2Pool : https://etherscan.io/address/...
0
votes
1answer
36 views

How to retrieve transactions' info such as gaslimit and gasprice from Etherscan?

This link shows the latest 500k transactions, and by clicking each one it opens a page with its info including gaslimit, gasprice, usedgas etc. https://etherscan.io/txs How can i retrieve the ...
1
vote
2answers
61 views

Can a Contract ABI change?

I am developing an app that is using the etherscan-api package. I use it to get the contract ABI. The problem is that I retrieve it via the API every time the function is called. My question is: ...
1
vote
2answers
57 views

weird transaction sending to self

see some weird txs calling self addresses, for example, the last 2(the first and second tx in this block) transactions, at https://etherscan.io/txs?block=6475251&p=2 https://etherscan.io/tx/...
0
votes
1answer
43 views

Deploy contract - have total supply but no token holder and balance

I deploy my contract to etherscan (rinkedby and etherscan). I have my total supply set but i can't see any in in network after deploy. I even copy the contract ceration code exactly from this ...
-1
votes
1answer
107 views

Found a Telegram ETH scammer/theif's main wallet address on Etherscan with $150,000 worth of stolen coin. What can be done?

Someone in my Telegram Telcoin group that I've talked to for months say they were a victim of ETH theft by a known ETH scammer in Telegram. This person sent me proof of pictures they took of ...
0
votes
2answers
58 views

Get contract information from transaction information?

This might be a simple question. Let's say I have the transaction hash: { blockNumber: "6214286", timeStamp: "1535248365", hash: "...
1
vote
1answer
109 views

How to check the total number of token holders in Etherscan?

I would like to see if all the tokens for a book have been bought. The link in Etherscan is here. As I can see, there is a total of 1000 tokens but there is only 12 addresses owning those tokens which ...
2
votes
1answer
17 views

Why won't remix finish launching all of my libraries?

I've run into an issue. I have a contract with a hierarchy of libraries (some lower level libraries import higher level libraries). All libraries are ultimately imported by our main contract. ...
0
votes
1answer
31 views

Retrieve function calls on a smart contract

So i have a simple smart contract that sends an event whenever a function is called, something like this: event DidSomething(uint taskId); function doSomething(uint _taskId) { taskId = _taskId; ...
1
vote
0answers
28 views

How can I see the transactions which move funds from a destroyed contract?

I got this external account from which I called a function of this contract which subsequently called selfdestruct and sent all the funds to the caller. Where can I see the tx making this transfer? ...
0
votes
1answer
69 views

Event handling confusing

Given is: pragma solidity ^0.4.24; contract changeSomVal{ address owner; bool test; event showBool(bool showBool); constructor() public { owner = msg.sender; } ...
3
votes
2answers
103 views

Inability to verify contract with ABIEncoderV2 on Etherscan

Yesterday I deployed a contract to Ropsten (https://ropsten.etherscan.io/address/0x1fe59c223fa4e9781237f0f49a15ca598069cc30) that relies on V2 of the ABI encoder. Thus it includes statement pragma ...
2
votes
0answers
70 views

Error when verifying signed message on Etherscan

Why is it that my message on etherscan can not be verified correctly? I always get this message: I'm sorry! Signature message verification failed
3
votes
1answer
121 views

ether faucet error whenever i am trying to get ethers for rinkeby testnet from https://faucet.rinkeby.io/

when ever i am trying to get ethers (rinkeby) from https://faucet.rinkeby.io/ it is giving me this error. Faucet offline: context deadline exceeded even without entry my url it is giving the error. ...
2
votes
1answer
42 views

Can someone imitate and create a fake erc20 contract? If so, how can we identify a contract?

If a project A deployed a erc20 token contract Mytoken, can a scammer create another Mytoken with some internal data modified (e.g., founder address)? Can etherscan identify such fake contracts? Or ...
1
vote
0answers
29 views

I cannot verify contract on etherscan

I cannot deploy my contract so I test with simplestorage but I cannot verify it either. pragma solidity ^0.4.24; contract SimpleStorage { uint storedData; function set(uint x) public { ...