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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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Ropsten transaction to mint an nft stuck on "indexing" [closed]

I was following the guide on https://ethereum.org/en/developers/tutorials/how-to-write-and-deploy-an-nft/ i got all the way to the part where i mint and i send the transaction using this code require(&...
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Transaction mined but has no receipt

My mindset around blockchain was like transactions exist in mempool, then they get into block and when they get in block and block is mined then you can get their receipts and see what actually ...
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Getting Error with EIP1559 style transaction: "unrecognized fields: {'maxFeePerGas', 'maxPriorityFeePerGas'}"

I wanted to sign and send a transaction interacting with a smart contract. This is the tx: Tx = ID.functions.withdraw(50000000000, '0x....').buildTransaction( { 'chainId': 1, 'gas': 410000,...
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Get details of pending transaction using tx hash

I'm trying to get the details of pending transaction using it's txhash. I tried using web3.eth.getTransaction(transactionHash) but it seems like it returns null for pending transactions but works fine ...
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Simulating transactions without verification overhead

I'd like to simulate transactions at maximum throughput. However, I think most simulation tools/approaches include verification of transaction signatures and block mining meta. Since I'm the one ...
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Is it possible to extract data such as `gasPrice`, `gasLimit`, `nonce`, etc. from the transaction that has been signed and serialized?

Is it possible to extract data such as gasPrice, gasLimit, nonce, etc. from the transaction that has been signed and serialized? For example I use this code for sign tx: //Signing transaction const ...
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Does calling a read function with input leave any trace?

I want to call a read function which does a calculation and returns a result. It is important that the input will not be saved on the blockchain. If I were to use a write function then even if there ...
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How to Call a payable function I am getting error={"code":-32603,"message":"Internal JSON-RPC error.","data":{"code":3,"message":"execution reverted"}

I am trying to call buy function which is a payable function using metamask signer method. I am getting error for sending incorrect ether value. Here I have set the price as 1 which is 0x01 in hex ...
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Transfer function not changing custom token(ERC20) balance after successful transfer from transfer function?

Transfer function not changing custom token(ERC20) balance after successful transfer from transfer function ? The transaction is successfully performed but the amount of custom token in my wallet does ...
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How to verify Bitcoin transaction against a specific user? [migrated]

I am working on project .i have a functionality where user can submit bitcoin to my wallet .and after submitting bitcoin a payment page will open and user will fill payment details e.g his/her bitcoin ...
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What happens when you send crypto to an address that does not exist in the network? [duplicate]

What happens when you send crypto to an address that does not exist in the network? Let's say Ethereum address have the format of four numbers only like 1234 but I accidentally send some coins to and ...
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What if I as a miner , include some wrong transactions in the block and push it . What is the process so that other nodes get notified about it?

Also give tips to sail easily through the ethereum yellow paper
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Does an ETH purchase on a CEX result in creation of a Tx on the ETH network?

I'm trying to get a better understanding of the nuts and bolts of Ethereum, and I understand that every simple ETH transfer from an EOA to an EOA requires a Tx. But I also now realize that Ethereum ...
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Conflicting txns

If two users mint a few tokens each from an nft contract, is there a possibility for overlap when delegating tokenIds to each? Example, bob mints 2 tokens, and alice mints 2. I would like confirmation ...
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Ecommerce platform that accept my own cryptocurrency [closed]

I would like to build an ecommerce platform that accept my own currencies (e.g. XYZ minted using ERC20 standard). In other words, users can purchase items using XYZ coins. Can we use some off-the-...
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how to index the changes of the eth and tokens in the sender account after a transaction execute

how to index the changes of the eth and tokens in the sender account after a transaction execute?is there a tool to do it?like the etherscan,https://etherscan.io/tx/...
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Get Transaction details using Python

I'm trying to get details of a given transaction (Datetime, Sender, Receiver, Name of Token Transerref, quantity). This is an example. I don't know any API or method can allow me to get these data. I ...
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Using vanilla Javascript, is it possible to immediately access the Edit Transaction page on MetaMask?

I currently have a website that initially requires a user to connect their MetaMask wallet. I understand that using ethereum.request({method: 'eth_sendTransaction'}, params:[{'from': 0x..., 'to': 0x......
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What are some APIs that write transactions to the blockchain?

Are there any APIs that write transactions to the blockchain? I am most interested in RESTful versions.
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Can I store random data with eth_sendTransaction?

According to the docs for web3.eth.sendTransaction and the docs for eth_sendTransaction: The transaction object can contain an optional data parameter which should be a String that consists of: either ...
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Etherscan API get transaction status from getLogs api call

I am using the Etherscan API to get a list of ERC20 transfer events for a contract, that are relevant to my address: https://api.etherscan.io/api?module=logs&action=getLogs https://api.etherscan....
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How much ether was transferred in this transaction?

Is there any way to determine how much ether was transferred in the following transaction? If so, how much was it? Transaction of interest { "hash": "...
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Payable function transaction failing

Please see the following code: // SPDX-License-Identifier: GPL-3.0 pragma solidity 0.8.1; contract Crowdfund { uint fundLimit = 3 ether; bool contractOpen = true; function donate() ...
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Weird block: miner prioritized lower gas TXs (200 times lower!) and let others fail. Analysis and questions

I encountered a situation that made me doubt everything I know about Ethereum transactions. In block 14721317 the transactions in positions [0, 1, 2, 3, 5, 9] all contain the same BuyOrder to buy the ...
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Fee for making a transaction Vs fee for recording a transaction

I'm in the process of learning how to write smart contracts and make transactions using the Ethereum blockchain. I'm following this tutorial and it looks like making a transaction and then adding a ...
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I sent a deposit from Bittrex to the ZRX - Wallet aAddress and want to recover the sold ZRX coin

This was my first time trying to do a trade and I accidently put in the Wallet address of the ZRX Token instead of my own Wallet Address.... :( I reached out to the Support team on Bittrex.com and ...
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BSC testnet showing weird input parameter names

My token smart contract has a "bridgeSend" function, which i wrote custom by myself. The function is basically just a wrapper around the transfer function. It allows users to send tokens to ...
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Can one still bypass EIP-155 and deploy to the same chain-independent address from an EOA

I was trying to deploy a contract to a deterministic address using Nicks method. This works fine on Rinkeby and all the Ethereum-Testnets that I tried. However, it doesn't work on Mumbai and probably ...
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If two transactions has the same gas fees, base gas fees, max priority fees, which transaction will come first in the same block?

If two transactions has the same gas fees, base gas fees, max priority fees, (aka gas fees config) which transaction will come first in the same block? Please kindly refer to the transactions below ...
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Is it possible to check when a transaction has been sent?

Is it? I don't mean the date-time of the 1 confirmation, but when a person has actually submitted a transaction to the blockchain or rather the transaction pool? Or is it the case that the date-time ...
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How to recover Ethereum Public Key from Transaction

How can I recover the Ethereum Public Key from a Transaction? web3.eth.accounts.recoverTransaction("...
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Contract not applying tax as expected in early sells

I need help with a tax loophole. This is a early sell tax within the first 24 hours of token purchase but when tokens are transferred to a new wallet taxes are not applied. or maybe extend time on ...
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How can I send erc20 tokens at once from MULTIPLE wallets to a single address?

I have a specific question. Is there any tool or wallet to manage multiple wallets and batch transfer tokens? Im not too familiar with contracts, so would prefer something easy to use with a UI https:/...
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swapExactTokensForTokens() throws error when use it in my truffle test file for testing

I forked uniswapV2 contracts and tried to use them on my project. I tried to test them using truffle test file. I started with creating 2 tokens tokenA and tokenB to create a pair and add amount to ...
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events can cause state change?

I am doing a simple HelloWorld class trying out several things including emitting events. My contract code is below: // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; contract HelloWorld { ...
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Brownie contract Interface not working on mainnet-fork

I'm following Patric Collins youtube video and trying to deposit wETH in the wETH contract using an interface and working using a fork of mainnet. I am trying to deposit eth in the next contract. ...
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transfer vs transferFrom "amount exceeds allowance" when sender is the same as msg.sender

I know the reasons for using transfer vs transferFrom but made the mistake of using the second one whilst doing some testing and I got the error "ERC20: transfer amount exceeds allowance". ...
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Compute transaction hash locally?

The usual workflow to submit an EVM transaction seems to be: Call the send(Raw)Transaction RPC method. Use the returned transaction hash to query the status of your transaction. My question is, is ...
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The same wallet address on the Mainnet Ethereum network and on the Polygon network. Are these two different wallets with two different owners?

I want to transfer some matic (Polygon network) to an Ethereum wallet address I know. But I don't know the address of this wallet on the Polygon network, I know its address on the Ethereum Mainnet. ...
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Is it possible to exchange one token for another via web3.js in Metamask?

I need to transfer one token to another on my website, in Metamask (for example, ether to bnb or ether to matic). In Metamask, you can select the desired coin, click "Swap" and you can ...
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How to get the transactions that have logs from a getBlockByNumber call?

I am interested in getting all the transactions from an Ethereum block that have emitted events. Would it be possible to get this information from the individual transaction from a getBlockByNumber ...
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How does a single getter call get chosen by a node if there's no reward associated?

A tx uses gas to incentivize being picked up by a node. On the other hand, a getter doesn't. It just returns the value. How does a single getter call get chosen by a node if there's no reward ...
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Optimizing ETH transaction code

I am using the below code for executing ETH transactions with web3.js Is it an optimized code? is there any room for improvements, what else can I add, or how can I handle exceptions/errors const ...
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How to automatically get gas and gas price average values in web3.js?

I want to automatically get gas and gas price averages in web3.js and update them periodically. Here are the values (low, average, high) for gas prices. But they are constantly changing, and changing ...
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A Transaction from a wallet to a smart contract gives an error "txn receipt status fail". If you transfer to another wallet, it works. How to fix it?

I need to transfer money from the Metamask wallet to the smart contract address. I wrote a js-file for this(using web3.js). (I'm testing on Rinkeby's network.) When my site opens, this js-file is ...
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How can I find the followin in a block with web3.js

From the address that sent most transactions. To address that received most transactions. Transaction with the highest gas price
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Can we implement consumable in-app purchases like gems based on ETH?

In my native iOS app for fiat based NFT solution, I want user to buy gems which actually will be wrapped currency on ether. What will be the process of buying this gems via in-app purchase ? Any SDK ...
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crawling last transactions

I am making a program to monitor who is sending ether to my wallet. I thought I could get the most recent blocks this way, but the repoFactory was empty. What could be the problem? i want to crawl ...
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What is the fastest way to filter live transactions

I'm trying to capture live transaction data using the etherscan api and filter them based on the transaction "Method" (i.e. to be able to capture NFT transactions and see new NFT contracts ...
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Did I get it right about how centralized ethereum crypto exchanges work?

a newbie here, I have a question about how centralized ethereum-based crypto exchanges facilitate external transactions. Please, tell me if I understood the process right, and if not, could you please ...
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