All Questions
Tagged with ethereum-wallet-dapp etherscan
37 questions
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How to know whether a wallet has an airdrop?
How to know whether an address has receive an airdrop of token ?
Example - https://etherscan.io/tx/0x47b185d59cba6c8ec070576df5d2bd7493b365130bc823fd836473eed7d604ff
In this transaction, multiple ...
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0
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48
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Fail with error 'ERC20: transfer amount exceeds balance' - Error encountered during contract execution [execution reverted]
https://etherscan.io/tx/0x0b9ee5ffb6ed1b54460e1131094c29e6f914bfd9e35e021f48ca3b9618fdc405
I had an issue during staking $meme in Stakeland.
The amount deducted from my Metamask wallet but not added ...
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14
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Searching for proof-readers: "The Aftermath of the Ethereum Merge"
Dear Ethereum enthusiast,
I am currently a Business Engineering student at Ghent University in Belgium. As part of my degree requirements, I am conducting research on the Ethereum Merge for my master’...
1
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0
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23
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How to you fetch all transactions ERC-20/ERC-721(swap, mint, burn) of a wallet?
I'm looking for an API that will give me exactly All transactions for a wallet, clearly broken down and labelled as Nft transfers, erc20 transfers, Nft purchases, token swaps etc. I've seen Moralis ...
- 683
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20
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Have I lost my my wallet funds [duplicate]
So I transferred my eth from trust into compound.pw but when I go back to it it shows my balance as 0.. my friend who is helping me on this journey has said as I didn’t put £500 in to start with it ...
- 1
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1
answer
78
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Stuck in Smart Contract
I paid the fees on ethereum for item but received nothing what can I do for this? I think there is an error in smart contract please check for me my address is ...
- 1
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2
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47
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New Account with no transaction
I'm working with my metamask wallet to interact with my DApp. While reading about data in Ethereum, I read that the blocks in the chain do not store any account information. It will have only ...
1
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1
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2k
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Display token balance of test tokens
I am working on a React-Native crypto application for fun, and I am trying to show the test tokens that I have inside my metamask wallet to display on my app to display the token balances.
I have ...
- 15
1
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1
answer
59
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Building Cryptocurrency Tracking system for monitoring stolen cryptocurrency transactions
When hackers steal tokens from an account, what they generally do is divert the flow of tokens via multiple proxy accounts making it complicated for the cyber-forensics department to track final ...
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47
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How to Un-flatten a smart contract in Solidity?
how to un-flatten this smart contract?
https://etherscan.io/address/0x789e35a999c443fe6089544056f728239b8ffee7#code
- 11
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45
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Polygon Top addresses Polygon chain vs Ethereum chain
If I check Polygon top addresses on Polygon chain, I see the following list on https://polygonscan.com/accounts. With top1 address 0x0000000000000000000000000000000000001010 containing 9,070,304,832....
- 11
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1
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425
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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 ...
- 1
0
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1
answer
1k
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Is it possible to fetch an Owner of an NFT by providing Smart Contract address and NFT ID
I am developing a smart contract which requires users to upload a specific information about their NFTs. I somehow need to verify whether they are the actual owner of that NFT before uploading ...
- 255
1
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2
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460
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How to show my erc20 coin custom logo everywhere?
I am planning to launch my custom tokens on polygon. I want to add a logo to my coin and after a while I want to change my token logo.
I have understood that there is three ways to do that -
Manually ...
- 173
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2
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2k
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How to import private key in web3.py
I have the requirement to convert my private key to address and please don't devote me I have searched already I come to across many solution but all are outdate example and really many more but it ...
- 129
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70
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Creating NFT Marketplace on Ethereum like OpenSea [closed]
I am honored to have a chance to deal with talented Blockchain programmer.
I am creating my own NFT marketplace base on Ethereum.
In this platform I will sell all NFTs in Blockchain.
But I face some ...
- 11
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214
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Sent Ethereum from MetaMask address to same MetaMask address
I sent Ethereum from my MetaMask wallet address to the same MetaMask wallet address. I basically sent the funds from myself to myself. The transaction is showing as processed on etherscan however I ...
- 11
0
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1
answer
1k
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Hacked Eth Account - What do I do with my staked tokens?
Unfortunately my Metamask wallet was hacked today on the Metamask app which I'm devasted about. I tried connecting Pancake Swap to it and it popped up asking for my words which I stupidly gave. The ...
- 1
1
vote
1
answer
861
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Difference between smart contract and wallet address
I have list of addresses & I am trying to find out if the address is wallet address or smart contract address. I am using web3js. Is there any way to distinguish between smart contract and wallet ...
0
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3
answers
543
views
Is there any api service for showing portfolio performance of ethereum address
I am working on dapp where i have to show portfolio performance of ethereum address. Can someone suggest me an api service which gives me all historic data of ethereum address show that i can plot a ...
- 11
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1
answer
214
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Getting all the Contracts created at Opensea and Rarible
I want to pull the number of NFT contracts created on opensea and rarible. I checked opensea API documentation and it seems like you can pass a range token ID's in this case I was wondering what would ...
- 259
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197
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How to get all tokens amount separately held on Ethereum address
I am working on a blockchain project related to Ethereum, Binance Network, etc.
The front end is React.js.
I need to get the total balance of user's wallet address (all tokens in that wallet address).
...
- 101
0
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1
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184
views
Promise { <pending> }
I am trying to get transactions done by each wallet by using Etherscan API. However, I am getting Promise { <pending> }.
Can someone please tell how to solve this issue?
Here is my code:
const ...
- 259
0
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1
answer
770
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API call to get a list of all transactions sent TO a specific address (not contract)?
I have used the Etherscan API call "http://api.etherscan.io/api?module=account&action=txlist&address=0xddbd2b932c763ba5b1b7ae3b362eac3e8d40121a&startblock=0&endblock=99999999&sort=...
0
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1
answer
1k
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Not able to generate java wrapper class from solidity smart contract using truffle
I'm trying to generate java wrapper class of solidity smart contract using truffle but not getting wrapperclass.java file
Here is an command which i've used to generate abi/Json of that contract
...
- 96
1
vote
1
answer
832
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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,...
- 254
2
votes
1
answer
54
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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 ...
- 254
1
vote
0
answers
135
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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 ...
- 254
3
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3
answers
1k
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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 ...
- 254
1
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1
answer
158
views
What is this address and for what?
What is this address and for what?
0x000000000000000000000000000000000000bEEF
3
votes
1
answer
4k
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How to hide my eth balance [duplicate]
i want to hide my eth balance from myetherwallet, etherscan , ethplorer .how to hide my eth balance in my ether wallet , etherscan , ethplorer.
any methods available, please reply
thanks
2
votes
1
answer
2k
views
What is a Erc20 (UBT) token I received in my wallet according to EtherScan?
I look in my EtherScan and it says that 5 days ago and 10 in value I received a token called Erc20(UBT) and I click on it, it's a Universal Bonus Token that came from an address = 0x00000000000... ...
- 31
0
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1
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204
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Why are token purchases on Rinkeby test net showing up on etherscan but the tokens not showing up in Ethereum Wallet?
The Ethereum Wallet is synced to the network, and it is the most up to date version. But the address that was the beneficiary of the tokens when purchased does not have any tokens in the account on ...
- 696
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2
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945
views
geth attach issue between mac and windows
I am running geth on windows machine and try for geth attach in mac. I give
below error:
Fatal: Failed to start the JavaScript console: api modules: Post http://192.168.0.107:8545: context deadline ...
0
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1
answer
602
views
Is there a Dapp for an Escrow(like) Smart Contract?
I have been searching and can't tell if I'm just confused or what. But I am trying to find out if there is a Dapp or if i need to make a smart contract that allows me to make an escrow smart contract ...
0
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1
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273
views
mistakenly sent ETC to ETH address on Cryptopia [duplicate]
I have mistakenly sent ETC from Cryptopia To an ETH address.How can i recover my ETC back.
3
votes
1
answer
1k
views
Problem verifying source code on Etherscan
This is really annoying I have tried putting in the ABI. Keep getting a constructor error. I have tried many combinations, nothing seems to work.
Following is the source code I deployed to Testnet ...
- 129