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.

351 questions with no upvoted or accepted answers
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6
votes
1answer
2k views

Etherscan: Effectively paginate `Event Logs` result

I am using Etherscan API for various Ethereum details. I need to find out the tokens transferred from a token original contract (let's say A) address to a particular address(let's say B). For this ...
6
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1answer
2k views

API resource for determining all address holders of a contract

I would like a RESTful API for viewing all addresses which holds a balance of a specific contract. It seems that etherscan.io deprecated this feature, or I'm looking at the wrong endpoints Are there ...
4
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1answer
339 views

Distinguishing erc721 transactions from the response of txlist on etherscan

I am making some erc721 transactions. I can retrieve those transactions using the etherscan api like this https://api.etherscan.io/api?module=contract&action=txlist&address=...
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0answers
229 views

What is the correct value to report for input data in this context?

On this transaction: https://etherscan.io/tx/0xae2630cdfbd0ca5292d272343c35dc8094365f2ecdc5c262c5639e79683f74dc, the input data is parsed and displayed as 'fund'. This is both correct and incorrect. ...
4
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0answers
968 views

What is the easiest way to view transaction history if a custom token?

What do you think it's the easiest way to view history of transaction for a custom token ? Like A sent X to be B on XX/XX/XXXX. Especially for people who don't know about Ethereum. A tool like ...
3
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1answer
689 views

How to bypass mempool

I always see a mark on etherscan called "Private Transaction - this tx bypassed the mempool." What is happening there and how does it work?
3
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0answers
567 views

Transaction not being mined within 750 seconds

On the main net, after getting the error from the title, by making sure it's not in pending pool, how long should I wait until I can safely retry a transaction? Thanks
3
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0answers
32 views

Get transaction in mainnet from layer2 rollup

With the coming of optimistic & ZKP rollups, I was wondering how we will be able to retrieve transaction data through etherscan.io generated from a layer2 solution. Let's put an example: Platform ...
3
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1answer
919 views

MetaMask - RPC Error: invalid argument 0: json: cannot unmarshal non-string into Go value of type common.Hash

I am using this code below and I got an error: await web3.eth.getTransactionReceipt(this.state.transactionHash, (err, txReceipt)=>{ console.log(err,txReceipt); this.setState({...
3
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0answers
261 views

ENS Name Look Kraken

I'm trying to get the ENS for addresses, so I thought initially to use the ENS on web3 from ens import ENS import web3 as w3 provider = w3.HTTPProvider('https://mainnet.infura.io/v3/...
3
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2answers
1k views

Ether is not reflecting in my Metamask account

My friend has transferred me some ether to my Metamask account but the ether hasn't reflected in my wallet. But in the ether scan, it is showing that my transaction was successful. What can I do to ...
3
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0answers
628 views

Can not verify a contract on Etherscan (with a library)

I tested my first contract and wanted to verify the contract on etherscan: https://rinkeby.etherscan.io/verifyContract?a=0xc73adf8d3ee480e483f45c9c84ee88269407e95d For some reason I can not verify ...
3
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0answers
740 views

How to import contract source code in etherscan.io

I'd like to learn which solidity source code is being used when I create a multisign Wallet in Parity 1.6 My goal is to import that source code into https://kovan.etherscan.io/verifyContract?a=...
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0answers
415 views

Can't Verify Contract on etherscan.io or etherchain.org

I've deployed a contract, which I generated using Mist but I can't seem to get it to verify. At etherscan.io I keep getting the error: Error! Invalid constructor arguements provided. Please ...
2
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0answers
86 views

Using Web3.py to monitor a contract/address for pending transactions

I am currently trying to build a script to automatically interact with a smart contract once a certain transaction has been sent. I have the interaction part down but am having difficulties actually ...
2
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0answers
56 views

How can I do contract call transaction from Metamask qr code scan?

I have a payable function in the smart contract that takes some ether from the sender and does some tasks. I want to generate QR code for this contract call transaction so that user can scan and ...
2
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0answers
1k views

Stuck trying to verify a smart contract through hardhat

I am trying to verify on hardhat an nft-tutorial by chainlink but am unable to. I have converted most of the code to hardhat compatible. The contract address on Rinkeby is ...
2
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0answers
72 views

How to prevent NFT or Enjin Token copying?

So lets say someone mints an Enjin token pointing to a 3D model asset for a game. What prevents someone from downloading that same exact 3D model, and minting a new token that points to it? Are the ...
2
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0answers
349 views

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://...
2
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0answers
37 views

How to determine the uniqueness of an internal transaction

How to determine the uniqueness of an internal transaction Example is this transaction: https://rinkeby.etherscan.io/tx/0xc756517a69239bddffe3e0cb07eba98d3ad0fae1b44fc936a0119dbaf7008942#internal ...
2
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0answers
69 views

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 ...
2
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1answer
47 views

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 ...
2
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0answers
24 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)?
2
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0answers
1k 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
2
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1answer
803 views

How to add website link to erc20 token on etherscan.io

How can we add this official site link to our deployed contract? Like in the image below: Here is my deployed contract address: https://etherscan.io/address/0xab73a739729a21b2299761408507556d2719af89#...
2
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1answer
71 views

Solo mining run out of HDD space miner found solution is everything lost?

I have only one rx 580 card and just setup solomining on my pc without any advanced settings bios changes etc My OS is Windows 10 100% noob here so please be more descriptive with your answers What ...
2
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0answers
465 views

Can you deploy a contract from a Ledger Nano S using Remix?

I have deployed a contract from a Ledger Nano S before by connecting to MEW and deploying using Bytecode and ABI of the contract. However I do not know what compiler version MEW used and so cannot ...
2
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0answers
3k views

eth.getBalance(eth.accounts[0]) always 0 on geth console

I want to deploy smart contract on rinkeby test network. I create account in Rinkeby test network.And connect with "Ethereum geth node".I successfully funded "https://faucet.rinkeby.io/". I also check ...
2
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0answers
132 views

BI Dashboard (Tableau, Qlikview esque) for Ethereum/Quorum?

Most of the ethereum transaction explorers (etherscan) I have encountered does not have snazzy analytics capabilities. For enterprise, there is a need to analyse (sum, count, etc) the data in the ...
2
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0answers
132 views

Tracking orders on 0x network

How are the various 0x network order trackers sourcing on-chain settlement data? My first assumption was that they were utilising the Etherscan API, however Etherscan have their own tracker, found at ...
2
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0answers
707 views

web3 1.0.0-beta example for etherscan websocket?

Does anyone have a working JS example for wss://socket.etherscan.io/wshandler? Or any alternative websocket providers, besides Infura? The reason I'm looking for Infura alternatives is it fails for ...
2
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0answers
44 views

Is this a bug in Etherscan

This transaction shows that account 0x152ae79400fdeee287849f35e4f687316e27bae6 sent this smart contract 0x14fbca95be7e99c15cc2996c6c9d841e54b79425 a transaction that interally invoked the maker token ...
2
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0answers
306 views

token (deployed by other crowdsale) not showing up on Etherscan

I have a crowdsale that creates a token. The crowdsale shows up on Etherscan and can also be used on MyEtherWallet. I read the token address which gets created by the crowdsale constructor via MEW but ...
2
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1answer
252 views

Contract creating other contract doesn't show resulting transaction details on etherescan

Looking for help with a successful transaction not showing the details on etherescan. Having a deployed factory contract like so (simplified): contract EntityFactory { event EntityCreated(...
2
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0answers
73 views

Why are my contracts created from a Factory appearing in etherscan as normal accounts and not contract accounts?

I have a factory on rinkby testnet that creates other contracts. These other contracts are shown as normal human accounts, and not contract accounts. It appears that the code for the factory and ...
2
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0answers
227 views

Strange revert() behavior on Etherscan

I am testing my contract, which is for an auction. I've deployed it on the Rinkeby testnet. I have a payable function that calls revert() if the bid being placed isn't higher than the existing bid. ...
2
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0answers
555 views

How to verify a deployed contract on etherscan

I would love to get some help with this as I'm wracking my brain with how to get this done. I have gone through this link to verify my contract: https://etherscan.io/verifyContract I am puzzled with ...
2
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0answers
321 views

How to find constructor values being passed to a contract

I'd like to find out which values were passed in when someone deployed a CrowdSale token. Is there a way to find out. Here is Lunyr Crowdsale contract How would I find out which values they passed ...
2
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2answers
569 views

how to connect to blockchain via etherscan provider

Hello i am trying to connect to the ethereum network with etherscan as HTTP provider so users don't have to have a running node but i cant seem to find their provider-URL.
2
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1answer
164 views

Why do compiler version and version in the source code not fit together for some verified contracts on Etherscan?

I found this verified contract on Etherscan: https://etherscan.io/address/0xd7a27d8d58f0c9e378fb3cb2816bde94c5e34059#code Etherscan says, it was compiled with solc version v0.4.14+commit.c2215d46, ...
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0answers
18 views

Is etherscan/bscscan limited to the last 100K transactions?

I was exploring a contract transaction and I was not able to see the contract creation as last transaction, but I found that there are all limited to the last 100K transactions. I know that I can ...
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0answers
45 views

I want to get Public key from transaction

I want to get public key from transaction. For example, TXID : 0x191095343fd26cbb4c58996aa6512d5cdf43281d565072bab8d0d5ea9e3d644e I have tried "Get Raw Transaction Hex" in etherscan and use ...
1
vote
1answer
40 views

bscscan contract argument data decoding

Let's take a look at this tx: https://bscscan.com/tx/0x9b7cde866e9fe9b9a1c636d0f9686ea5b1920c875d7fcd973baf847bc359c8a9 as you can see it's buying token through pancake swap: ...
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0answers
10 views

What is the complete specification for typing values into Etherscan write contract?

You can type in: addresses integers strings booleans bytes arrays of items 1–7 structs of items 1–7 Please fully specify all acceptable ways to type each of those into that box.
1
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1answer
155 views

Use Uniswap V3 SwapRouter on Etherscan

I am trying to interact with Uniswap's SwapRouter smart contract directly on Rinkeby Etherscan, but with no success. I would like to swap ETH to DAI or ETH to WETH for example. Here is what I am ...
1
vote
1answer
33 views

What is value of msg.sender when reading contract on etherscan or bscscan?

When I look at a contract on etherscan or bscscan, it is possible to read the contract, which basically just calls a public function of the contract. But what value is used for msg.sender when I read ...
1
vote
1answer
199 views

Is there any way to get list of all NFTs owned by an etherscan as shown on etherscan apart from monitoring Transfer even?

I want an api or something that can list all the nfts owned by an address, as it is shown on etherscan so I assume we can get that but not able to find that. Also I know that we can do that by ...
1
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0answers
353 views

Getting an interface from a contract deployed on etherscan?

Given a contract address, is their some way to get an interface of the code deployed there? For example, I want to create an interface containing all the methods I can use on the balancer vault here: ...
1
vote
1answer
62 views

Creating similar output as EtherScan "Transaction action" with web3.py

I'm trying to get transaction data from etherscan and would like to get exactly what is represented in the "Transaction Action" section of the transaction details. For example, in this ...
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0answers
22 views

Compiled & Deployed Smart Contract via Remix, can't "Verify and Publish" on Etherscan.io

Good morning, I've created an NFT and deployed my smart contract to main network yesterday after compiling it in Remix. I followed the exact same process I did for testnet, which worked perfectly and ...

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