Questions tagged [transactions]

The term "transaction" is used in Ethereum to refer to the signed data package that stores a message to be sent from an externally owned account.

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is there a way I can make transaction without asking for wallet confirmation (auto accept transaction)?

I am trying to make a function where when the user clicks the transaction button the transaction will happen without wallet confirmation.Is it possible with web3 if yes then how? Do I need to pass ...
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I lost my crypto from my wallet

My tokens were transferred from my wallet without my approval, can someone help with what happened? I obtained the crypto through some Uniswap swaps and I have them for a couple of months, but I lost ...
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Pending transactions got cancelled after wating enough time or they keep pending forever?

There are solutions out there to cancel a pending transaction, for example sending another transaction with the same nonce to substitute it. Also paying more gas to accelerate it or even pay to cancel....
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Why do I keep getting invalid argument?

transact to SimpleStorage.addPerson errored: Error encoding arguments: Error: invalid BigNumber string (argument="value" value="" code=INVALID_ARGUMENT version=bignumber/5.5.0) ...
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go ethereum Approve success but unable to locate this TxnHash on bscscan

I want to Approve some WBNB on bsc-chain(PancakeSwap) for swapping other token, currently the balance is "0.0008", the allowance is "0.0001", I want to swap all the WBNB so I need ...
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Transaction working in Remix but being reverted on test network

modifier upForSale (uint256 _itemId) { require(idToBid[_itemId].forSale); _; } function auction(uint256 itemId, uint256 amount, uint8 active) external onlyOwner(itemId) { ...
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Transaction execution being reverted on test network

modifier upForSale (uint256 _itemId) { require(idToBid[_itemId].forSale); _; } function auction(uint256 itemId, uint256 amount, uint8 active) external onlyOwner(itemId) { ...
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How to simulate buy?

im new in web3js and i got a problem. Would be nice, if you could help me. Ive been trying to solve it myself for days... Im trying to simulate a buy transaction (after its working i will do the sell ...
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Looping over scheduling ETH transaction

I have used Aion smart contracts to facilitate scheduling a ETH transaction. It works fine, but when it comes to making those transactions periodically (Scheduling multiple transactions), it throws an ...
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I need to send this transaction with an specific ether value, how can add the ether value to the method call and submit the transaction with metamask? [duplicate]

const contract = new ethers.Contract(contractAddress, abi, signer); let ethereum = window.ethereum; const tx = await contract.charge(signer.getAddress(), 1);
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Best way to use timestamp to automatic activate function or allow function execution

What is the best way to use the timestamp to automatically activate function or allow function execution? For example, I want to allow a user to buy a token only if is in the timestamp interval that I ...
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Can a blockchain only store transaction proofs or any kind of data in it?

I am currently studying about the blockchain technology. Everywhere they say that transactions on a blockchain cannot be tempered with. I assumed any kind of data can be stored in a blockchain. But in ...
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How is transactionIndex decided in a block?

I'm using web3py and web3js to send transactions on the Harmony EVM chain using sendRawTransaction, and i noticed that once my transaction is sent, the transactionIndex value will always be between 0 ...
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Is there a visual way to interact with an Ethereum smart contract?

I would like to interact with a smart contract deployed on a particular Ethereum TestNet using an address different from the one I used to create/deploy the contract which as far as I know is not ...
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Create a signed transaction on the front-end to be propagated by the back-end

I'm trying to allow users to sign a transacation, which is meant to call a smart contract method, on the front-end, so Metamask would prompt the user to sign message/transaction which would be sent to ...
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The longer a smart contract interaction's code is, the higher the gas?

It seems that different contract interactions cost different amounts of gas. For example, minting an NFT costs much more gas than the action of transferring some ether to another wallet. Are these gas ...
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I need help understanding transactions order in a block

I know this question has been asked many times, but i don't know if it applies to this case. I'm using web3py and web3js to buy an NFT as soon as it is put on sale by a contract, as an exercise to ...
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What is and where to see in transaction in Etherscan the fields result.contractAddress and result.confirmations in API?

When I download data from a contract using API there are 2 fields that i cannot understand in which part of transaction in Etherscan are these numbers and maybe give me the definition of those fields: ...
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How to check a wallet's Wrapped Ether balance on OpenSea or Etherscan?

Etherscan shows transfers in and out of Ether, whereas Wrapped Ether (WETH) appears in Etherscan's ERC-20 transactions. Etherscan readily displays the current Ether balance of a wallet at the top-left ...
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Is the state of the ethereum blockchain changed with each transaction or with each block?

Assume we have two transactions A and B which are put into a block by a miner (first A then B). Will both transactions be executed with the state of the previous block or will transaction B be ...
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Determine if transaction receipt is for ERC20 or ERC721

I am trying to distinguish between NFT transactions and any other transaction. I found this post where it says to compare the topics length, but that seems to be incorrect. ERC721 topic lengths are 4 ...
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how can I categorize the transactions based on the method they call to transfer and non-transfer transactions using web3?

Blockchain explorers show "transfer" instead of the method id for some of the transactions on their list, so there should be a way to filter transactions based on the method they call. How ...
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Wrong Ethereum Address [duplicate]

I accidentally sent NFT to the ERC20 address on my ledger that doesn't support the transfer; the wallet shows no transaction. Can I reclaim my NFT? ...
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Method works on local but fails on Ropsten [closed]

Trying to debug this transaction (it's a large one that deploys a contract) that works on local but fails on ropsten. First, it said Error: cannot estimate gas; transaction may fail or may require ...
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Get List of ERC 20 Token transfers by contract with web3.py

I apologize if this is answered elsewhere, but I haven't been able to find a clear answer. Here's what I'm trying to do: I'd like the get a list of ERC 20 token transfers from a specific smart ...
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I didn't make any transfers on my metamask

I deposited some eth to my metamask some days ago and need to wait for my Gemini account to confirm. But the next day noticed my account was at 1 dollar. I didn't touch anything nor send anything. ...
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How can I make the transactions in a ethereum private chain as fast as possible?

At the moment I am evaluating the possibilities of using an ethereum private chain for a special use case. Incidentally, I'm still at the very beginning, also when it comes to understanding ethereum ...
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What factors exactly affect the speed, depth and range of scanning the mempool?

There is zero quality information available on that topic anywhere, for obvious reasons. If there is however somebody willing to share, whether from experience or purely technical understanding of all ...
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How to send WETH to a contract with the Buy Tokens method

I need to send WETH to the contract of sale using the buy Token method, it turns out only to send FTM, but I could not find how to send another coin to the contract using the desired method Address = ...
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I have a question about how to tell whether tx is 'transfer', 'call', 'create' or 'destruct'

I want to distinguish between the types of Ethereum TX. In the Ethercan, That is distinguish tx type like, transfer, contract create, contract destruct, contract call and etc... so, I check trace data ...
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Understanding ethereum transaction

I'm doin my combing through etherscan and am coming accross transactions called "remove sniper" and "set remove from fees" what does remove sniper mean on the blockchain
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"Coinbase 6" instead of exchange wallet address showing in Etherscan transactions

An exchange wallet address created on an exchange like Coinbase or Kraken starts with a unique 0x address just like any other Ethereum wallet. But when you transfer out to another 0x address from this ...
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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 ...
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constructing transactions for Fantom

Below is my attempt at constructing a transaction on Fantom (Keep in mind that Fantom is not EIP-1559 compatible, so the format should be the old one) contract_txn = contract_SPOOKY_ROUTER.functions....
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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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1answer
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Allow contract to create transactions on my behalf

Is there any way to allow a contract to execute any transaction (sending assets or interacting with another contract) on my behalf ? If it's not possible with a native ETH account, would a Gnosis ...
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NFT marketplace gas fees question

I'm working on a nft marketplace as my side project (MERN stack + solidity + web3). Since each transaction / call to martetplace contract methods will incur a gas fee on the client / user, how should ...
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is it really necessary to use the public key to send erc20 tokens?

It is evident that the private key is the fundamental piece of everything, for that reason I wonder, why we need to include the public key in the transactions, why does the private key not do the ...
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Error : transaction underpriced

In this course while deploying the first contract on rinkby network.It's not working for me as it throws an error Error: transaction underpriced Below is the code which I tried to deploy File: deploy....
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Unexpected character error when declaring new contract with ethers.js

I am trying to use Uniswap v2 swapExactETHForTokens function in my js code using ethers. To do that, I have declared the ethers contract as follows: const uniswap = new ethers.Contract( '...
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Case sensitive eth-addresses with different balances?? How is that?

These are the addresses: 0x7cB57B5A97Eabe94205c07890BE3C1aD31E486A8  0x7Cb57B5a97EaBe94205c07890bE4C1aD31E456a8  0x7cB57B5A97eAbe94205C07890BE4c1aD31E486A8  0x7CB57b5A97eabe94205C07890beaC1aD31E486a8 ...
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Error: Transaction reverted: function returned an unexpected amount of data

I am making an auction house that auction NFTs and burn the current auctionned NFT if there are no bidders at the end of the auction. Everything works except that if there are no bidders at the end of ...
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Understand how transactions work when minting NFT

very newbie question, but I tried to mint an NFT on https://www.developerdao.com/mint and when I did my metamask wallet showed me a transaction to confirm, I confirm and then the transaction was ...
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get transaction hash

I want to know the transaction hash that already done. The transaction is called tr in my code. Credentials credentials=Credentials.create("account address") ; web3= ...
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Access control in ethereum

Can you let some nodes in ethereum network have only view access while others can to mine blocks and add them to blockchain? Can the miners be authorized nodes only?
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Transaction cost not correct on API -

I'm analyzing this transaction If you open the api transaction details You can see gas "0x490b4" gasPrice "0x26e1f9c600" By converting them to decimal and calculating we got ...
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TxPool size on public BSC node

Something happened to BSC public node(https://bsc-dataseed.binance.org/), and I am confused. I usually call this BSC public node to get block transactions and content of txpool. Average number of ...
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Ethereum sent to Trust Wallet using unsupported KCC network

I sent Ethereum to Trust from Kucoin using the KCC network which is not a supported network by trustwallet. When i look up the transaction on the blockchain, confirmations are still rising? Is there a ...
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Send transaction from accounts of different node

I am running a private blockchain using geth. I have 3 nodes A,B and C and each node has its accounts. So if I connect via RPC to node A. when I send a trasnaction from nodeA_user 1 to nodea user 2 it ...
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Hello im new to all this and in not sure how to figure things out

Yesterday I started the day with 16k in my saitama inu account, I was swamping saitama for ETH on uni swamp, I was swamping 7800 so it sent me back to my trust wallet to approve it so once i hit ...

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