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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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Is transaction written into block even if it failed?

According to economic incentive, gasPrice and gasLimit is required for every transaction and total transaction fee is gasPrice * gasLimit. If the transaction failed to be validated or out of gas, the ...
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1answer
20 views

How do I send etheream to a contract?

I'm trying to send ethereal from a wallet address to a smart contract address and... well, it doesn't seem to work. Perhaps someone can help me find out what I'm doing wrong? Here is my code. public ...
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174 views

How to find, whose ETH address it is? [closed]

Is it possible to get personal information of a person using his ETH wallet address? I did sell my ETH to one person, due to a technical glitch, multiple ETH transaction happened without my ...
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1answer
118 views

multiple transfer?

First of all, hello. we will write a token for a project we have developed. We are creating new tokens, we want to write a simple contract on remix ethereum. We will distribute a large portion of the ...
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39 views

How do I monitor event on Main Ethereum Account using Nethereum

What I mean is the real ETH transferred to my account, not Token. Let says I have an account (address 0x1234567890) Someone send me 1 ETH. I wish I can monitor and see that transaction, without ...
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1answer
36 views

Is transaction triggered by web3 secure on the internet?

I'm trying to construct my business architecture using ethereum. I'll operate public ethereum node and private business server on the AWS. I'll trigger transaction from the private business server ...
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135 views

How to trace ether transfer within contract internal transaction

In most cases, ether transfer would contain from to and value that can be used to determine the sender, receiver, and the amount sent. But today I found two different transactions: ...
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2answers
137 views

How to trace token transfer that may contained in contract inner transactions

Take this transaction as an example. This single transaction contains 50 inner transactions. If directly calling api, what we get is a very long raw hex in input field. This input actually contains ...
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44 views

How do signed transactions in a single Ethereum node's transaction pool propagate to mining nodes?

How does a transaction get from a regular node to the rest of the network? What are the incentives for regular nodes to broadcast signed transactions?
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204 views

How to use “etherscan” to push a raw transaction without running a node?

According to this answer, how to use etherscan to push a raw transaction without running a node? In this case, do not we need to install Parity or geth or any Ethereum client ?
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50 views

How can I sign a transaction using c or c++(arduino) [closed]

I want to create and sign transactions on arduino as offline.But I am not know this.Please help me.
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1answer
189 views

For sending a transaction to Ethereum, we need to be a “full node”?

If we only intend to send a transaction to Ethereum blockchain, do we need to be "full node" to have the entire blockchain? meaning that do we need to be "sync" with the blockchain to have the latest ...
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18 views

How to get daily transactions for ethereum?

On etherscan there is a graph of Ethereum's daily transactions. I'm building an app that needs the same functionality. Is there an api I can use to get daily or even real time transaction count?
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from token transaction detail, how can I know if token is actually transferred?

I am implementing support of multiple tokens in my application. I want to listen new token received transactions. I got that I need to decode the input data in any transaction to get the toAddress ...
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67 views

Is there a way to use etherscan API (or another) to get a history of transactions for a specific ERC20 token for an ethereum account?

I want to be able to display the complete history of our token transfers in and out of users wallets. Is there an easy or established way to do this?
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2answers
47 views

Is that the gas price actually affects the transaction time on the Ropsten testnet

I know that If the gas price is high enough, the transaction will be executed sooner since miners will execute transactions with the highest gas price first. does this rule really apply in the ...
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355 views

How to generate a raw transaction and sign it with a private key and output the signed transaction with web3js 1.0? [duplicate]

I'm using a html file to try and test out methods on web3js. I want to be able to transfer tokens but first I need to be able to generate a raw Tx, sign it and output the signed transaction. How ...
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1answer
54 views

Can somebody (anybody) please help me figure out how to send an ERC-20 token from my wallet to another using web3js 1.0.0?

I've been trying to follow the documentation, but then that mentions things that are not native to Javascript like "Buffer" so I find a thing called ethereumjs-tx to let me use that. My HTML page to ...
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1answer
47 views

How transaction manipulation handles in Blockchain?

I'm new to Blockchain and would like to understand few concepts in a detail. After reading about basics of Blockchain, one thing is unclear to me about tx. manipulation. For instance, A has some (i....
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58 views

Sending transactions via MetaMask on Parity light mode

I have succesfully installed parity and am running it on the --light mode. I can connect to it with MetaMask via RPC. However, when I try to send a transaction it keeps hanging on the "send" screen of ...
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1answer
16 views

Unable to transact funds in testrpc

I'm running a simple smart contract on testrpc using remix: Contract Testing{ address [] public adds; uint [] public amounts; function bet() public payable{ adds.push(msg.sender);...
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1answer
31 views

Z value of ECDSA

I am trying to validate an ethereum tx using ECDSA. R(x, y) = uG + vQ where u= zs^-1, v = rs^-1, Q= Public key For following tx 0x8b69a0ca303305a92d8d028704d65e4942b7ccc9a99917c8c9e940c9d57a9662 ...
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2answers
174 views

Ethereum transaction RangeError: private key length is invalid

I'm running a tutorial on how to sign an ethereum transaction programmatically, and I'm getting the following error: RangeError: private key length is invalid This is the code: var Web3 = require(...
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How to trace the ethereum in a contract if messages are not written in the blockchain

The messages initiated by contracts are not stored in the blockchain, unlike transactions. If that's the case how can do we see where an ethereum in a contract or a wallet came from if it's from a ...
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1answer
83 views

Quorum privateFor visibility

Our current project requires that the recipients of a private transaction are unknown to the rest of the network. So my question is: is the privateFor field dropped before sending the transaction to ...
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0answers
25 views

Best way to restore historical storage state

What is the best way to get historical storage state, given db with current world state and blockchain data? Do I need to reverse assemby code or can I do this using receipt logs?
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1answer
31 views

Do native Ethereum transactions use smart contracts?

Does a smart contract come into play if I make a simple Ethereum transaction like sending someone an amount of ETH? Or do smart contracts only apply when I wish to implement additional functionality (...
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1answer
84 views

Calling contract function via web3.eth.sendTransaction doesnt work

Im learning how Blockchains work and created a private Blockchain to test some things. I deployed the following contract: contract Greeter { address creator; string greeting; ...
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1answer
117 views

Account nonce limit/maximum

I've been reading about an account's nonce, that it's supposed to be an incremental number that increments with every transaction. I found about transactions pool and queue, about what happen if you ...
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1answer
53 views

Transactions of ether between contracts

I am trying to figure out how transactions between contracts work and what you can and cannot do. I want to have a contract that makes some logical decision about who to pay when poked by another ...
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1answer
51 views

personal_sendTranaction for token tranfer return hash but transaction isn't found in the blockchain

I am using Geth as a provider to the blockchain. I perform JSON-RPC method send_Transaction to transfer tokens, it returns me hash of the transaction but I can't see this transaction in the Etherscan. ...
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0answers
148 views

how to send transaction with geth running in light mode on testnet

I am having troubles to sendTransaction with geth running in light mode. Startup: geth --testnet --syncmode "light" --rpc --rpcport 10001 --rpccorsdomain "*" --rpcaddr 127.0.0.1 --datadir /opt/...
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1answer
30 views

Transaction Pending and Dropped

I have a transaction pending from 4 days. I have tried to unlock following this answer: MyEtherWallet is pending and dropping. It looks like it is stuck in a loop for 2 days? Now the current nonce is ...
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1answer
34 views

Identify whether the recepient of transaction is an external account or a smart contract [duplicate]

I know that an Ethereum transaction addressed to '0x000..000' is creating a new contract. Now, given a transaction address to non-zero address, I want to identify whether it is a transaction to an ...
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80 views

“Invalid JSON RPC response: ”" when sending TX very quickly to geth. Pending TX being removed

In order to test the TPS of a private network, I have a script that signs and submits 400 transactions which sends ETH from one account to another account. This network has it's block gas limit set ...
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1answer
449 views

what is difference between “gas” “gas price” and “fee”?

Can we say that gas is the unit of transaction fee ? And gas price is the same transaction fee ? If so, why we do not use ether and wei instead of gas ?
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1answer
28 views

Is it clear that for every “ether” transfering using “address.transfer(amount)” how much “fee” must be paid?

Is it clear that for every "ether" transfer using "address.transfer(amount)" how much "fee" must be paid? I mean how much is the cost of transferring ether by address.transfer(amount)? Is it a fix ...
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67 views

how to automatically transfer funds in geth

I am trying to find a way how to automatically transfer funds from one address to another after new block is sealed. Scenario would look like this: 1. New block sealed 2. Check source account ...
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1answer
43 views

How long does it take a return the TxHash for a transaction in the MainNet?

I have been doing some work on the private ETH node and when I submit a transaction the local ETH node returns a TxHash immediately. My currently implementation completely relies on the immediate ...
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1answer
183 views

Ganache and truffle - how to set zero deployment fees

I am running a local ganache-cli node on my machine and would like to have zero transaction fees. For this reason I am starting the node using ganache-cli -g 0 which sets the gas price to zero. ...
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66 views

Ethereum Wallet sending zero value transactions

I'm not sure what's happening. I created a private network and started mining it. When the mining is started, the coin base is getting the block reward ( with no transaction). Things change when I ...
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1answer
39 views

Why has this transaction failed?

Getting familiar with the geth client and within some code followed a tutorial (HERE) to transfer tokens from an address. When I check the transaction on EtherScan, it has failed: https://rinkeby....
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1answer
22 views

What exactly is a transaction when working with SmartContracts?

I am very new in Blockchain and Ethereum. I know the has transactions and blocks with hashes etc. I also followed this example https://www.ethereum.org/greeter to create my own private Network with 2 ...
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1answer
157 views

How to calculate Estimated Confirmation Duration of a pending transaction?

How I can calculate Estimated Confirmation Duration or Can someone give me a formula to calculate Estimated Confirmation Duration of a pending transaction like etherscan.io do?
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1answer
50 views

I failed to send FDZ token about 20 times, what happen?

I'm trying to send my FDZ token to my Exchange wallet, but no luck. I tried to increase the GAS, change the target address, process in an other time... But everything were failed, still paid all gas ...
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1answer
240 views

How To Read Etherscan Token Transfers

I'm noticing a lot of ether transfers into ERC20 token contracts months after the token's ICO finished. I am wondering how is this possible, and where these tokens are coming from, since tokens are ...
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1answer
14 views

Help Storing Smart Contracts For Later Use

I am a new blockchain developer and need some advice. I understand that when I deploy a smart contract on my private network I receive a transaction hash and an address of the smart contract. If I we'...
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1answer
309 views

ERC20 tokens transactions' history from Ethereum node

I have a parity node. I developed a web3.js interface on top of it. I have APIs whose job is to fetch addresses' balances and transactions. Example response of transaction API: { tx_hash: '...
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1answer
510 views

What does a position means in an ethereum Tx?

There are 2 fields in the following Ethereum Tx, named nonce & {position}. What does position mean?
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1answer
38 views

Is it possible to create batches of transactions without using smart contracts?

Scenario: Suppose that I have to make three transactions simultaneously to Alice, Bob and Claudia. Now the condition is if any one transaction fails the other two must also not go through. Query: Is ...